Seagate Computer Drive 100516225 User Guide

*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting.

4.2

SEEK PERFORMANCE CHARACTERISTICS

See Section 11.5, "FC-AL physical interface" on page 56 and the Fibre Channel Interface Manual (part number 77767496)

for additional timing details.

4.2.1 Access time

NOT INCLUDING CONTROLLER

1 2

OVERHEAD (MSEC)

READ

3.4

WRITE

3.9

Average

Typical

Single track

Full stroke

0.2

0.44

7.4

6.6

Typical access times are measured under nominal conditions of temperature, voltage, and

horizontal orientation as measured on a representative sample of drives.

Access to data = access time + latency time.

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4.2.2 Format command execution time (minutes)

When changing sector sizes, the format times shown below may need to be increased by 30 minutes.

ST3600057FC

ST3450857FC

ST3300657FC

119

Maximum (with verify)

Maximum (without verify)

Note. There is approximately a 1.5 increase in time to format a SED drive versus a non-SED drive of the same capacity.

4.2.3 General performance characteristics

Sustainable disk transfer rate*:

Minimum

Maximum

122 Mbytes/sec (typical)

204 Mbytes/sec (typical)

Fibre Channel Interface maximum instantaneous transfer rate

Logical block sizes

400 Mbytes/sec* per port

Default is 512-byte data blocks

Sector sizes variable to 512, 520, 524 and 528 bytes.

Read/write consecutive sectors on a track

Yes

Flaw reallocation performance impact (for flaws reallocated at format time Negligible

using the spare sectors per sparing zone reallocation scheme.)

Average rotational latency

2.0 msec

*Assumes no errors and no relocated logical blocks.

Rate measured from the start of the first logical block transfer to or from the host.

1MB/sec = 1,000,000 bytes/sec

4.3

START/STOP TIME

If the Motor Start option is disabled, the drive becomes ready within 20 seconds after DC power is applied. If a recoverable

error condition is detected during the start sequence, the drive executes a recovery procedure and the time to become ready

may exceed 20 seconds. During spin up to ready time, the drive responds to some commands over the FC interface in less

than 3 seconds after application of power. Stop time is 30 seconds (maximum) from removal of DC power.

If the Motor Start option is enabled, the internal controller accepts the commands listed in the Fibre Channel Interface

Manual less than 3 seconds after DC power has been applied. After the Motor Start command has been received, the drive

becomes ready for normal operations within 20 seconds (excluding the error recovery procedure). The Motor Start command

can also be used to command the drive to stop the spindle.

There is no power control switch on the drive.

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4.4

PREFETCH/MULTI-SEGMENTED CACHE CONTROL

The drive provides a prefetch (read look-ahead) and multi-segmented cache control algorithms that in many cases can

enhance system performance. Cache refers to the drive buffer storage space when it is used in cache operations. To select

this feature, the host sends the Mode Select command with the proper values in the applicable bytes in page 08h. Prefetch

and cache operations are independent features from the standpoint that each is enabled and disabled independently using

the Mode Select command; however, in actual operation, the prefetch feature overlaps cache operation somewhat as

described in sections 4.5.1 and 4.5.2.

All default cache and prefetch mode parameter values (Mode Page 08h) for standard OEM versions of this drive family are

given in Table 18.

4.5

CACHE OPERATION

Note. Refer to the Fibre Channel Interface Manual for more detail concerning the cache bits.

Of the 16 Mbytes physical buffer space in the drive, approximately 13,000 kbytes can be used as a cache. The buffer is

divided into logical segments from which data is read and to which data is written.

The drive keeps track of the logical block addresses of the data stored in each segment of the buffer. If the cache is enabled

(see RCD bit in the FC Interface Manual), data requested by the host with a read command is retrieved from the buffer, if

possible, before any disk access is initiated. If cache operation is not enabled, the buffer is still used, but only as circular

buffer segments during disk medium read operations (disregarding Prefetch operation for the moment). That is, the drive

does not check in the buffer segments for the requested read data, but goes directly to the medium to retrieve it. The

retrieved data merely passes through some buffer segment on the way to the host. All data transfers to the host are in

accordance with buffer-full ratio rules. See the explanation provided with the information about Mode Page 02h (disconnect/

reconnect control) in the Fibre Channel Interface Manual.

The following is a simplified description of the prefetch/cache operation:

Case A—read command is received and all of the requested logical blocks are already in the cache:

1. Drive transfers the requested logical blocks to the initiator.

Case B—A Read command requests data, and at least one requested logical block is not in any segment of the cache:

1. The drive fetches the requested logical blocks from the disk and transfers them into a segment, and then from there to

the host in accordance with the Mode Select Disconnect/Reconnect parameters, page 02h.

2. If the prefetch feature is enabled, refer to section 4.5.2 for operation from this point.

Each cache segment is actually a self-contained circular buffer whose length is an integer number of logical blocks. The

drive dynamically creates and removes segments based on the workload. The wrap-around capability of the individual

segments greatly enhances the cache’s overall performance.

Note. The size of each segment is not reported by Mode Sense command page 08h, bytes 14 and 15. The value

0XFFFF is always reported regardless of the actual size of the segment. Sending a size specification using the

Mode Select command (bytes 14 and 15) does not set up a new segment size. If the STRICT bit in Mode page

00h (byte 2, bit 1) is set to one, the drive responds as it does for any attempt to change an unchangeable param-

eter.

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4.5.1 Caching write data

Write caching is a write operation by the drive that makes use of a drive buffer storage area where the data to be written to

the medium is stored while the drive performs the Write command.

If read caching is enabled (RCD=0), then data written to the medium is retained in the cache to be made available for future

read cache hits. The same buffer space and segmentation is used as set up for read functions. The buffer segmentation

scheme is set up or changed independently, having nothing to do with the state of RCD. When a write command is issued, if

RCD=0, the cache is first checked to see if any logical blocks that are to be written are already stored in the cache from a

previous read or write command. If there are, the respective cache segments are cleared. The new data is cached for

subsequent Read commands.

If the number of write data logical blocks exceed the size of the segment being written into, when the end of the segment is

reached, the data is written into the beginning of the same cache segment, overwriting the data that was written there at the

beginning of the operation; however, the drive does not overwrite data that has not yet been written to the medium.

If write caching is enabled (WCE=1), then the drive may return Good status on a write command after the data has been

transferred into the cache, but before the data has been written to the medium. If an error occurs while writing the data to the

medium, and Good status has already been returned, a deferred error will be generated.

The Synchronize Cache command may be used to force the drive to write all cached write data to the medium. Upon

completion of a Synchronize Cache command, all data received from previous write commands will have been written to the

medium.

Table 18 shows the mode default settings for the drive.

4.5.2 Prefetch operation

If the Prefetch feature is enabled, data in contiguous logical blocks on the disk immediately beyond that which was requested

by a Read command are retrieved and stored in the buffer for immediate transfer from the buffer to the host on subsequent

Read commands that request those logical blocks (this is true even if cache operation is disabled). Though the prefetch

operation uses the buffer as a cache, finding the requested data in the buffer is a prefetch hit, not a cache operation hit.

To enable Prefetch, use Mode Select page 08h, byte 12, bit 5 (Disable Read Ahead - DRA bit). DRA bit = 0 enables prefetch.

The drive does not use the Max Prefetch field (bytes 8 and 9) or the Prefetch Ceiling field (bytes 10 and 11).

When prefetch (read look-ahead) is enabled (enabled by DRA = 0), the drive enables prefetch of contiguous blocks from the

disk when it senses that a prefetch hit will likely occur. The drive disables prefetch when it decides that a prefetch hit is not

likely to occur.

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5.0 RELIABILITY SPECIFICATIONS

The following reliability specifications assume correct host and drive operational interface, including all interface timings,

power supply voltages, environmental requirements and drive mounting constraints.

Seek error rate:

Less than 10 errors in 10⁸seeks

Read Error Rates

Recovered Data

Less than 10 errors in 10¹²bits transferred (OEM default settings)

Less than 1 sector in 10¹⁶bits transferred

Less than 1 sector in 10²¹bits transferred

Unrecovered Data

Miscorrected Data

Interface error rate:

Less than 1 error in 10¹²bits transferred with minimum receive eye.

Less than 1 error in 10¹⁴bits transferred with typical receive eye.

See Section 11.6.4, "FC Differential input." on page 65

Annualized Failure Rate (AFR):

Preventive maintenance:

0.55%

None required

5.1

ERROR RATES

The error rates stated in this manual assume the following:

• The drive is operated in accordance with this manual using DC power as defined in paragraph 6.2, "DC power require-

ments."

• Errors caused by host system failures are excluded from error rate computations.

• Assume random data.

• Default OEM error recovery settings are applied. This includes AWRE, ARRE, full read retries, full write retries and full retry

time.

• Error rate specified with automatic retries and data correction with ECC enabled and all flaws reallocated.

5.1.1 Recoverable Errors

Recovereable errors are those detected and corrected by the drive, and do not require user intervention.

Recoverable Data errors use retries and correction. Application of ECC on-the-fly correction alone is not considered a

Recovered Data error.

Recovered Data error rate is determined using read bits transferred for recoverable errors occurring during a read, and using

write bits transferred for recoverable errors occurring during a write.

5.1.2 Unrecoverable Errors

Unrecoverable Data Errors (Sense Key = 03h) are specified at less than 1 sector in error per 10 bits transferred.

Unrecoverable Data Errors resulting from the same cause are treated as 1 error for that block.

5.1.3 Seek errors

A seek error is defined as a failure of the drive to position the heads to the addressed track. After detecting an initial seek

error, the drive automatically performs an error recovery process. If the error recovery process fails, a seek positioning error

(Error code = 15h or 02h) will be reported with a Hardware error (04h) in the Sense Key. Recoverable seek errors are

specified at Less than 10 errors in 10 seeks. Unrecoverable seek errors (Sense Key = 04h) are classified as drive failures.

5.1.4 Interface errors

An interface error is defined as a failure of the receiver on a port to recover the data as transmitted by the device port

connected to the receiver. The error may be detected as a running disparity error, illegal code, loss of word sync, or CRC

error. The total error rate for a loop of devices is the sum of the individual device error rates.

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5.2

RELIABILITY AND SERVICE

You can enhance the reliability of Constellation ES.3 SAS disk drives by ensuring that the drive receives adequate cooling.

Section 6.0 provides temperature measurements and other information that may be used to enhance the service life of the

drive. Section 10.2 provides recommended air-flow information.

5.2.1 Annualized Failure Rate (AFR) and Mean Time Between Failures (MTBF)

These drives shall achieve an AFR of 0.55% (MTBF of 1,600,000 hours) when operated in an environment that ensures the

HDA case temperatures do not exceed the values specified in Section 6.4.1.

Operation at case temperatures outside the specifications in Section 6.4.1 may increase the AFR (decrease the MTBF). AFR

and MTBF statistics are poplulation statistics that are not relevant to individual units.

AFR and MTBF specifications are based on the following assumptions for Enterprise Storage System environments:

• 8,760 power-on hours per year

• 250 average on/off cycles per year

• Operating at nominal voltages

• System provides adequate cooling to ensure the case temperatures specified in Section 6.4.1 are not exceeded.

5.2.2 Preventive maintenance

No routine scheduled preventive maintenance is required.

5.2.3 Hot plugging the drive

Inserting and removing the drive on the FC-AL will interrupt loop operation. The interruption occurs when the receiver of the

next device in the loop must synchronize to a different input signal. FC error detection mechanisms, character sync, running

disparity, word sync, and CRC are able to detect any error. Recovery is initiated based on the type of error.

The disk drive defaults to the FC-AL Monitoring state, Pass-through state, when it is powered-on by switching the power or

hot plugged. The control line to an optional port bypass circuit (external to the drive), defaults to the Enable Bypass state. If

the bypass circuit is present, the next device in the loop will continue to receive the output of the previous device to the newly

inserted device. If the bypass circuit is not present, loop operation is temporarily disrupted until the next device starts

receiving the output from the newly inserted device and regains synchronization to the new input.

The Pass-through state is disabled while the drive performs self test of the FC interface. The control line for an external port

bypass circuit remains in the Enable Bypass state while self test is running. If the bypass circuit is present, loop operation

may continue. If the bypass circuit is not present, loop operation will be halted while the self test of the FC interface runs.

When the self test completes successfully, the control line to the bypass circuit is disabled and the drive enters the FC-AL

Initializing state. The receiver on the next device in the loop must synchronize to output of the newly inserted drive.

If the self-test fails, the control line to the bypass circuit remains in the Enable Bypass state.

Note. It is the responsibility of the systems integrator to assure that no temperature, energy, voltage hazard, or ESD

potential hazard is presented during the hot connect/disconnect operation. Discharge the static electricity from

the drive carrier prior to inserting it into the system.

Caution. The drive motor must come to a complete stop prior to changing the plane of operation. This time is required to

insure data integrity.

5.2.4 S.M.A.R.T.

S.M.A.R.T. is an acronym for Self-Monitoring Analysis and Reporting Technology. This technology is intended to recognize

conditions that indicate imminent drive failure and is designed to provide sufficient warning of a failure to allow you to back up

the data before an actual failure occurs.

Note. The drive’s firmware monitors specific attributes for degradation over time but can’t predict instantaneous drive

failures.

Each monitored attribute has been selected to monitor a specific set of failure conditions in the operating performance of the

drive and the thresholds are optimized to minimize “false” and “failed” predictions.

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Controlling S.M.A.R.T.

The operating mode of S.M.A.R.T. is controlled by the DEXCPT and PERF bits on the Informational Exceptions Control

mode page (1Ch). Use the DEXCPT bit to enable or disable the S.M.A.R.T. feature. Setting the DEXCPT bit disables all

S.M.A.R.T. functions. When enabled, S.M.A.R.T. collects on-line data as the drive performs normal read and write

operations. When the PERF bit is set, the drive is considered to be in “On-line Mode Only” and will not perform off-line

functions.

You can measure off-line attributes and force the drive to save the data by using the Rezero Unit command. Forcing

S.M.A.R.T. resets the timer so that the next scheduled interrupt is in two hours.

You can interrogate the drive through the host to determine the time remaining before the next scheduled measurement and

data logging process occurs. To accomplish this, issue a Log Sense command to log page 0x3E. This allows you to control

when S.M.A.R.T. interruptions occur. Forcing S.M.A.R.T. with the RTZ command resets the timer.

Performance impact

S.M.A.R.T. attribute data is saved to the disk so that the events that caused a predictive failure can be recreated. The drive

measures and saves parameters once every two hours subject to an idle period on the FC-AL bus. The process of

measuring off-line attribute data and saving data to the disk is uninterruptable. The maximum on-line only processing delay is

summarized below:

Table 2:

Maximum processing delay

On-line only delay

Fully-enabled delay

DEXCPT = 0, PERF = 1

DEXCPT = 0, PERF = 0

42 milliseconds

S.M.A.R.T. delay times

163 milliseconds

Reporting control

Reporting is controlled by the MRIE bits in the Informational Exceptions Control mode page (1Ch). Subject to the reporting

method, the firmware will issue to the host an 01-5Dxx sense code. The error code is preserved through bus resets and

power cycles.

Determining rate

S.M.A.R.T. monitors the rate at which errors occur and signals a predictive failure if the rate of degraded errors increases to

an unacceptable level. To determine rate, error events are logged and compared to the number of total operations for a given

attribute. The interval defines the number of operations over which to measure the rate. The counter that keeps track of the

current number of operations is referred to as the Interval Counter.

S.M.A.R.T. measures error rates. All errors for each monitored attribute are recorded. A counter keeps track of the number of

errors for the current interval. This counter is referred to as the Failure Counter.

Error rate is the number of errors per operation. The algorithm that S.M.A.R.T. uses to record rates of error is to set

thresholds for the number of errors and their interval. If the number of errors exceeds the threshold before the interval

expires, the error rate is considered to be unacceptable. If the number of errors does not exceed the threshold before the

interval expires, the error rate is considered to be acceptable. In either case, the interval and failure counters are reset and

the process starts over.

Predictive failures

S.M.A.R.T. signals predictive failures when the drive is performing unacceptably for a period of time. The firmware keeps a

running count of the number of times the error rate for each attribute is unacceptable. To accomplish this, a counter is

incremented each time the error rate is unacceptable and decremented (not to exceed zero) whenever the error rate is

acceptable. If the counter continually increments such that it reaches the predictive threshold, a predictive failure is signaled.

This counter is referred to as the Failure History Counter. There is a separate Failure History Counter for each attribute.

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5.2.5 Thermal monitor

Cheetah 15K.7 FC drives implement a temperature warning system which:

1. Signals the host if the temperature exceeds a value which would threaten the drive.

2. Signals the host if the temperature exceeds a user-specified value.

3. Saves a S.M.A.R.T. data frame on the drive which exceeds the threatening temperature value.

A temperature sensor monitors the drive temperature and issues a warning over the interface when the temperature

exceeds a set threshold. The temperature is measured at power-up and then at ten-minute intervals after power-up.

The thermal monitor system generates a warning code of 01-0B01 when the temperature exceeds the specified limit in

compliance with the SCSI standard. The drive temperature is reported in the FRU code field of mode sense data. You can

use this information to determine if the warning is due to the temperature exceeding the drive threatening temperature or the

user-specified temperature.

This feature is controlled by the Enable Warning (EWasc) bit, and the reporting mechanism is controlled by the Method of

Reporting Informational Exceptions field (MRIE) on the Informational Exceptions Control (IEC) mode page (1Ch).

The current algorithm implements two temperature trip points. The first trip point is set at 68°C which is the maximum

temperature limit according to the drive specification. The second trip point is user-selectable using the Log Select

command. The reference temperature parameter in the temperature log page (see Table 1) can be used to set this trip point.

The default value for this drive is 68°C, however, you can set it to any value in the range of 0 to 68°C. If you specify a

temperature greater than 68°C in this field, the temperature is rounded down to 68°C. A sense code is sent to the host to

indicate the rounding of the parameter field.

Table 1:

Temperature Log Page (0Dh)

Parameter Code

0000h

Description

Primary Temperature

Reference Temperature

0001h

5.2.6 Drive Self Test (DST)

Drive Self Test (DST) is a technology designed to recognize drive fault conditions that qualify the drive as a failed unit. DST

validates the functionality of the drive at a system level.

There are two test coverage options implemented in DST:

1. Extended test

2. Short test

The most thorough option is the extended test that performs various tests on the drive and scans every logical block address

(LBA) of the drive. The short test is time-restricted and limited in length—it does not scan the entire media surface, but does

some fundamental tests and scans portions of the media.

If DST encounters an error during either of these tests, it reports a fault condition. If the drive fails the test, remove it from

service and return it to Seagate for service.

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5.2.6.1 DST failure definition

The drive will present a “diagnostic failed” condition through the self-tests results value of the diagnostic log page if a

functional failure is encountered during DST. The channel and servo parameters are not modified to test the drive more

stringently, and the number of retries are not reduced. All retries and recovery processes are enabled during the test. If data

is recoverable, no failure condition will be reported regardless of the number of retries required to recover the data.

The following conditions are considered DST failure conditions:

• Seek error after retries are exhausted

• Track-follow error after retries are exhausted

• Read error after retries are exhausted

• Write error after retries are exhausted

Recovered errors will not be reported as diagnostic failures.

5.2.6.2 Implementation

This section provides all of the information necessary to implement the DST function on this drive.

5.2.6.2.1

State of the drive prior to testing

The drive must be in a ready state before issuing the Send Diagnostic command. There are multiple reasons why a drive

may not be ready, some of which are valid conditions, and not errors. For example, a drive may be in process of doing a

format, or another DST. It is the responsibility of the host application to determine the “not ready” cause.

While not technically part of DST, a Not Ready condition also qualifies the drive to be returned to Seagate as a failed drive.

A Drive Not Ready condition is reported by the drive under the following conditions:

• Motor will not spin

• Motor will not lock to speed

• Servo will not lock on track

• Drive cannot read configuration tables from the disk

In these conditions, the drive responds to a Test Unit Ready command with an 02/04/00 or 02/04/03 code.

5.2.6.2.2

Invoking DST

To invoke DST, submit the Send Diagnostic command with the appropriate Function Code (001b for the short test or 010b for

the extended test) in bytes 1, bits 5, 6, and 7.

5.2.6.2.3

Short and extended tests

DST has two testing options:

1. short

2. extended

These testing options are described in the following two subsections.

Each test consists of three segments: an electrical test segment, a servo test segment, and a read/verify scan segment.

Short test (Function Code: 001b)

The purpose of the short test is to provide a time-limited test that tests as much of the drive as possible within 120 seconds.

The short test does not scan the entire media surface, but does some fundamental tests and scans portions of the media. A

complete read/verify scan is not performed and only factual failures will report a fault condition. This option provides a quick

confidence test of the drive.

Extended test (Function Code: 010b)

The objective of the extended test option is to empirically test critical drive components. For example, the seek tests and on-

track operations test the positioning mechanism. The read operation tests the read head element and the media surface.

The write element is tested through read/write/read operations. The integrity of the media is checked through a read/verify

scan of the media. Motor functionality is tested by default as a part of these tests.

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The anticipated length of the Extended test is reported through the Control Mode page.

5.2.6.2.4 Log page entries

When the drive begins DST, it creates a new entry in the Self-test Results Log page. The new entry is created by inserting a

new self-test parameter block at the beginning of the self-test results log parameter section of the log page. Existing data will

be moved to make room for the new parameter block. The drive reports 20 parameter blocks in the log page. If there are

more than 20 parameter blocks, the least recent parameter block will be deleted. The new parameter block will be initialized

as follows:

1. The Function Code field is set to the same value as sent in the DST command

2. The Self-Test Results Value field is set to Fh

3. The drive will store the log page to non-volatile memory

After a self-test is complete or has been aborted, the drive updates the Self-Test Results Value field in its Self-Test Results

Log page in non-volatile memory. The host may use Log Sense to read the results from up to the last 20 self-tests performed

by the drive. The self-test results value is a 4-bit field that reports the results of the test. If the field is set to zero, the drive

passed with no errors detected by the DST. If the field is not set to zero, the test failed for the reason reported in the field.

The drive will report the failure condition and LBA (if applicable) in the Self-test Results Log parameter. The Sense key, ASC,

ASCQ, and FRU are used to report the failure condition.

5.2.6.2.5

Abort

There are several ways to abort a diagnostic. You can use a SCSI Bus Reset or a Bus Device Reset message to abort the

diagnostic.

You can abort a DST executing in background mode by using the abort code in the DST Function Code field. This will cause

a 01 (self-test aborted by the application client) code to appear in the self-test results values log. All other abort mechanisms

will be reported as a 02 (self-test routine was interrupted by a reset condition).

5.2.7 Product warranty

Beginning on the date of shipment to the customer and continuing for the period specified in your purchase contract,

Seagate warrants that each product (including components and subassemblies) that fails to function properly under normal

use due to defect in materials or workmanship or due to nonconformance to the applicable specifications will be repaired or

replaced, at Seagate’s option and at no charge to the customer, if returned by customer at customer’s expense to Seagate’s

designated facility in accordance with Seagate’s warranty procedure. Seagate will pay for transporting the repair or

replacement item to the customer. For more detailed warranty information, refer to the standard terms and conditions of

purchase for Seagate products on your purchase documentation.

The remaining warranty for a particular drive can be determined by calling Seagate Customer Service at 1-800-468-3472.

You can also determine remaining warranty using the Seagate web site (www.seagate.com). The drive serial number is

required to determine remaining warranty information.

Shipping

When transporting or shipping a drive, use only a Seagate-approved container. Keep your original box. Seagate approved

containers are easily identified by the Seagate Approved Package label. Shipping a drive in a non-approved container voids

the drive warranty.

Seagate repair centers may refuse receipt of components improperly packaged or obviously damaged in transit. Contact

your authorized Seagate distributor to purchase additional boxes. Seagate recommends shipping by an air-ride carrier

experienced in handling computer equipment.

Product repair and return information

Seagate customer service centers are the only facilities authorized to service Seagate drives. Seagate does not sanction

any third-party repair facilities. Any unauthorized repair or tampering with the factory seal voids the warranty.

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6.0 PHYSICAL/ELECTRICAL SPECIFICATIONS

This section provides information relating to the physical and electrical characteristics of the drive.

6.1

AC POWER REQUIREMENTS

None.

6.2

DC POWER REQUIREMENTS

The voltage and current requirements for a single drive are shown below. Values indicated apply at the drive connector.

Notes are shown following the last power requirements table.

The standard drive models and the SED drive models have identical hardware, however the security and encryption portion

of the drive controller ASIC is enabled and functional in the SED models. This represents a small additional drain on the 5V

supply of about 30mA and a commensurate increase of about 150mW in power consumption. There is no additional drain on

the 12V supply.

Table 2 ST3600057FC DC power requirements

2 Gbit

4 Gbit

Notes

(Amps) (Amps) (Amps) (Amps)

Voltage

+5V

±5%

0.39

+12V [2] +5V

±5% [2] ±5%

+12V [2]

±5% [2]

0.81

Regulation

[5]

Avg idle current DCX

Maximum starting current

(peak DC) DC

[1] [7]

0.81

0.42

3s [3]

0.67

1.02

0.55

1.93

3.73

0.04

0.70

1.00

0.58

1.92

3.61

0.04

(peak AC) AC

Delayed motor start (max) 3s [1] [4]

Peak operating current:

Typical DCX

[1] [6]

3s [1]

0.48

0.50

1.30

1.18

1.19

3.00

0.51

0.53

1.32

1.17

1.19

2.98

Maximum DC

Maximum (peak) DC

Table 3 ST3450857FC DC power requirements

2 Gbit

4 Gbit

Notes (Amps) (Amps) (Amps) (Amps)

Voltage

+5V

+12V [2] +5V

±5% [2] ±5%

+12V [2]

±5% [2]

0.69

Regulation

[5]

±5%

Avg idle current DCX

Maximum starting current

(peak DC) DC

[1] [7] 0.40

0.69

0.42

3s [3]

0.69

1.08

1.85

3.77

0.04

0.72

1.08

0.61

1.85

3.49

0.04

(peak AC) AC

Delayed motor start (max) 3s [1] [4] 0.58

Peak operating current:

Typical DCX

[1] [6] 0.49

1.04

1.07

2.80

0.53

0.57

1.40

1.03

1.07

2.84

Maximum DC

3s [1]

0.53

1.36

Maximum (peak) DC

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Table 4 ST3300657FC DC power requirements

2 Gbit

4 Gbit

Note (Amps) (Amps) (Amps)

(Amps)

Voltage

+5V

+12V [2] +5V

±5% [2] ±5%

+12V [2]

±5% [2]

0.59

Regulation

[5]

±5%

Avg idle current DCX

Maximum starting current

(peak DC) DC

[1] [7] 0.39

0.59

0.39

3s [3]

0.62

0.96

1.91

3.75

0.04

0.62

0.98

0.56

1.91

3.57

0.04

(peak AC) AC

Delayed motor start (max) 3s [1] [4] 0.56

Peak operating current:

Typical DCX

[1] [6] 0.48

0.92

1.00

2.80

0.48

0.53

1.32

0.91

0.95

2.72

Maximum DC

3s [1]

0.53

1.32

Maximum (peak) DC

[1] Measured with average reading DC ammeter. Instantaneous +12V current peaks will exceed these values. Power sup-

ply at nominal voltage. N (number of drives tested) = 6, 35 Degrees C ambient.

[2] For +12 V, a –10% tolerance is allowed during initial spindle start but must return to ±5% before reaching 15000 RPM.

The ±5% must be maintained after the drive signifies that its power-up sequence has been completed and that the drive

is able to accept selection by the host initiator.

[3] See +12V current profile in Figure 1.

[4] This condition occurs when the Motor Start option is enabled and the drive has not yet received a Start Motor command.

[5] See paragraph 6.2.1, "Conducted noise immunity." Specified voltage tolerance includes ripple, noise, and transient

response.

[6] Operating condition is defined as random 8 block reads at 375 I/Os per second for 600GB models and 380 I/Os per sec-

ond for 450GB and 300GB models. Current and power specified at nominal voltages.

[7] During idle, the drive heads are relocated every 60 seconds to a random location within the band from three-quarters to

maximum track.

General DC power requirement notes.

1. Minimum current loading for each supply voltage is not less than 1.2% of the maximum operating current shown.

2. The +5V and +12V supplies should employ separate ground returns.

3. Where power is provided to multiple drives from a common supply, careful consideration for individual drive power

requirements should be noted. Where multiple units are powered on simultaneously, the peak starting current must be

available to each device.

4. Parameters, other than spindle start, are measured after a 10-minute warm up.

5. No terminator power.

6.2.1 Conducted noise immunity

Noise is specified as a periodic and random distribution of frequencies covering a band from DC to 10 MHz. Maximum

allowed noise values given below are peak-to-peak measurements and apply at the drive power connector.

+5 V = 250 mV pp from 100 Hz to 20 MHz.

+12 V = 800 mV pp from 100 Hz to 8 KHz.

450 mV pp from 8 KHz to 20 KHz.

250 mV pp from 20 KHz to 5 MHz.

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6.2.2 Power sequencing

The drive does not require power sequencing. The drive protects against inadvertent writing during power-up and down.

6.2.3 Current profiles

The +12V and +5V current profiles are shown in the following figures.

Note: All times and currents are typical. See Section 6.2 for maximum current requirements.

Figure 1. Typical ST3600057FC current profiles

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Figure 2.

Typical ST3450857FC current profiles

Figure 3.

Typical ST3300657FC current profiles

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6.3

POWER DISSIPATION

600GB model

Typical power dissipation under idle conditions in 4 Gbit operation is 11.58 watts (39.52 BTUs per hour).

To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 4). Locate the

typical I/O rate for a drive in your system on the horizontal axis and read the corresponding +5 volt current, +12 volt current,

and total watts on the vertical axis. To calculate BTUs per hour, multiply watts by 3.4123.

Figure 4.

ST3600057FC DC current and power vs. input/output operations per second

450GB models

Typical power dissipation under idle conditions in 4 Gbit operation is 10.24 watts (34.94 BTUs per hour).

To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 4). Locate the

typical I/O rate for a drive in your system on the horizontal axis and read the corresponding +5 volt current, +12 volt current,

and total watts on the vertical axis. To calculate BTUs per hour, multiply watts by 3.4123.

Figure 5.

ST3450857FC DC current and power vs. input/output operations per second

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300GB models

Typical power dissipation under idle conditions in 4 Gbit operation is 9.06 watts (30.92 BTUs per hour).

To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 4). Locate the

typical I/O rate for a drive in your system on the horizontal axis and read the corresponding +5 volt current, +12 volt current,

and total watts on the vertical axis. To calculate BTUs per hour, multiply watts by 3.4123.

Figure 6.

ST3300657FC DC current and power vs. input/output operations per second

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6.4

ENVIRONMENTAL LIMITS

Temperature and humidity values experienced by the drive must be such that condensation does not occur on any drive part.

Altitude and atmospheric pressure specifications are referenced to a standard day at 58.7°F (14.8°C). Maximum wet bulb

temperature is 82°F (28°C).

6.4.1 Temperature

a. Operating

The maximum allowable continuous or sustained HDA case temperature for the rated Annualized Failure Rate (AFR) is

122°F (50°C). The maximum allowable HDA case temperature is 60°C. Occasional excursions of HDA case

temperatures above 122°F (50°C) or below 41°F (5°C) may occur without impact to the specified AFR. Continual or

sustained operation at HDA case temperatures outside these limits may degrade AFR.

Provided the HDA case temperatures limits are met, the drive meets all specifications over a 41°F to 131°F (5°C to 55°C)

drive ambient temperature range with a maximum temperature gradient of 68°F (20°C) per hour. Air flow may be needed

in the drive enclosure to keep within this range (see Section 8.3). Operation at HDA case temperatures outside this

range may adversely affect the drives ability to meet specifications. To confirm that the required cooling for the electronics

and HDA case is provided, place the drive in its final mechanical configuration, perform random write/read operations and

measure the HDA case temperature after it has stabilized.

b. Non-operating

–40° to 158°F (–40° to 70°C) package ambient with a maximum gradient of 68°F (20°C) per hour. This specification

assumes that the drive is packaged in the shipping container designed by Seagate for use with drive.

HDA Temp.

Check Point

Figure 7.

Locations of the HDA temperature check point

6.4.2 Relative humidity

The values below assume that no condensation on the drive occurs.

a. Operating

5% to 95% non-condensing relative humidity with a maximum gradient of 20% per hour.

b. Non-operating

5% to 95% non-condensing relative humidity.

6.4.3 Effective altitude (sea level)

a. Operating

–1,000 to +10,000 feet (–305 to +3,048 meters)

b. Non-operating

–1,000 to +40,000 feet (–305 to +12,210 meters)

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6.4.4 Shock and vibration

Shock and vibration limits specified in this document are measured directly on the drive chassis. If the drive is installed in an

enclosure to which the stated shock and/or vibration criteria is applied, resonances may occur internally to the enclosure

resulting in drive movement in excess of the stated limits. If this situation is apparent, it may be necessary to modify the

enclosure to minimize drive movement.

The limits of shock and vibration defined within this document are specified with the drive mounted by any of the four

methods shown in Figure 8, and in accordance with the restrict ions of Section 10.4. Orientation of the side nearest the I/O

connector may be up or down.

6.4.4.1 Shock

a. Operating—normal

The drive, as installed for normal operation, shall operate error free while subjected to intermittent shock not exceeding:

• 15 Gs at a duration of 11 msec (half sinewave)

• 20 Gs at a duration of 2 msec (half sinewave)

• 60 Gs at a duration of 2 msec (half sinewave) when performing reads only

Shock may be applied in the X, Y, or Z axis. Shock is not to be repeated more than once every 2 seconds.

b. Operating—abnormal

Equipment, as installed for normal operation, does not incur physical damage while subjected to intermittent shock not

exceeding 40 Gs at a duration of 11 msec (half sinewave). Shock occurring at abnormal levels may promote degraded

operational performance during the abnormal shock period. Specified operational performance will continue when normal

operating shock levels resume. Shock may be applied in the X, Y, or Z axis. Shock is not to be repeated more than once

every 2 seconds.

c. Non-operating

The limits of non-operating shock shall apply to all conditions of handling and transportation. This includes both isolated

drives and integrated drives.

The drive subjected to nonrepetitive shock not exceeding the three values below, shall not exhibit device damage or

performance degradation.

• 80 Gs at a duration of 11 msec (half sinewave)

• 300 Gs at a duration of 2 msec (half sinewave)

• 150 Gs at a duration of 0.5 msec (half sinewave)

Shock may be applied in the X, Y, or Z axis.

d. Packaged

Disk drives shipped as loose load (not palletized) general freight will be packaged to withstand drops from heights as

defined in the table below. For additional details refer to Seagate specifications 30190-001 (under 100 lbs/45 kg) or

30191-001 (over 100 lbs/45 Kg).

PACKAGE SIZE

PACKAGED/PRODUCT WEIGHT

DROP HEIGHT

<600 cu in (<9,800 cu cm)

Any

60 in (1524 mm)

48 in (1219 mm)

42 in (1067 mm)

36 in (914 mm)

600-1800 cu in (9,800-19,700 cu cm)

>1800 cu in (>19,700 cu cm)

>600 cu in (>9,800 cu cm)

0-20 lb (0 to 9.1 kg)

20-40 lb (9.1 to 18.1 kg)

Drives packaged in single or multipacks with a gross weight of 20 pounds (8.95 kg) or less by Seagate for general freight

shipment shall withstand a drop test from 48 inches (1,070 mm) against a concrete floor or equivalent.

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Figure 8.

Recommended mounting

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6.4.4.2 Vibration

a. Operating—normal

The drive as installed for normal operation, shall comply with the complete specified performance while subjected to

continuous vibration not exceeding

10 – 300 Hz

301– 500 Hz

1.0 G RMS (0 to peak)

0.5 G RMS (0 to peak)

Vibration may be applied in the X, Y, or Z axis.

b. Operating—abnormal

Equipment as installed for normal operation shall not incur physical damage while subjected to periodic vibration not

exceeding:

15 minutes of duration at major resonant frequency

Vibration occurring at these levels may degrade operational performance during the abnormal vibration period. Specified

operational performance will continue when normal operating vibration levels are resumed. This assumes system

recovery routines are available.

Operating abnormal translational random flat profile

5 – 500 Hz

10 - 300 Hz

0.75 G (0 to peak)

0.0029 G²/Hz

c. Non-operating

The limits of non-operating vibration shall apply to all conditions of handling and transportation. This includes both

isolated drives and integrated drives.

The drive shall not incur physical damage or degraded performance as a result of continuous vibration not exceeding

5 – 22 Hz

22 - 350 Hz

350 - 500 Hz

0.25 G (0 to peak, linear, swept sine, 0.5 octive/min)

3 G (0 to peak, linear, swept sine, 0.5 octive/min)

1 G (0 to peak, linear, swept sine, 0.5 octive/min)

Vibration may be applied in the X, Y, or Z axis.

6.4.5 Acoustics

Sound power during idle mode shall be 3.4 bels typical when measured to ISO 7779 specification. Sound power while

operating shall be 3.8 bels typical when measured to ISO 7779 specification.

There will not be any discrete tones more than 10 dB above the masking noise on typical drives when measured according

to Seagate specification 30553-001. There will not be any tones more than 24 dB above the masking noise on any drive.

6.4.6 Air cleanliness

The drive is designed to operate in a typical office environment with minimal environmental control.

6.4.7 Corrosive environment

Seagate electronic drive components pass accelerated corrosion testing equivalent to 10 years exposure to light industrial

environments containing sulfurous gases, chlorine and nitric oxide, classes G and H per ASTM B845. However, this

accelerated testing cannot duplicate every potential application environment.

Users should use caution exposing any electronic components to uncontrolled chemical pollutants and corrosive chemicals

as electronic drive component reliability can be affected by the installation environment. The silver, copper, nickel and gold

films used in Seagate products are especially sensitive to the presence of sulfide, chloride, and nitrate contaminants. Sulfur

is found to be the most damaging. In addition, electronic components should never be exposed to condensing water on the

surface of the printed circuit board assembly (PCBA) or exposed to an ambient relative humidity greater than 95%. Materials

used in cabinet fabrication, such as vulcanized rubber, that can outgas corrosive compounds should be minimized or

eliminated. The useful life of any electronic equipment may be extended by replacing materials near circuitry with sulfide-free

alternatives.

6.4.8 Electromagnetic susceptibility

See Section 2.1.1.1.

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6.5

MECHANICAL SPECIFICATIONS

Refer to Figure 9 for detailed physical dimensions. See Section 10.4, “Drive mounting.””

Height:

Width:

Depth:

1.03 in

4.00 in

5.79 in

26.10 mm

101.60 mm

147 mm

Weight (max): 1.76 pounds

0.80 kilograms

// T -Z-

REF

-Z-

[1]

R REF

Notes:

[1]

N -X-

Mounting holes are 6-32 UNC 2B, three on

each side and four on the bottom. Max

screw penetration into side of drive is 0.15

in. (3.81 mm). Max screw tightening torque

is 6.0 in-lb (0.6779 nm) with minimum full

thread engagement of 0.12 in. (3.05 mm).

-Z-

-X-

U -X-

Dimension Table

Inches

Millimeters

1.028 max

5.787 max

4.000 .010

3.750 .010

0.125 .010

1.750 .010

1.122 .020

4.000 .010

0.250 .010

1.638 .010

0.181

26.10 max

147.00 max

101.60 .25

95.25 .25

3.18 .25

44.45 .25

28.50 .50

101.60 .25

6.35 .25

41.60 .25

4.60

[1]

.040

1.02

1.625 .020

1.618

41.28 .50

41.10

0.276 .040

.015 max

7.00 1.02

0.38 max

.015 max

Figure 9.

Mounting configuration dimensions

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7.0 ABOUT FIPS

The Federal Information Processing Standard (FIPS) Publication 140-2 is a U.S. Government Computer Security Standard

used to accredit cryptographic modules. It is titled 'Security Requirements for Cryptographic Modules (FIPS PUB 140-2)' and

is issued by the National Institute of Standards and Technology (NIST).

Purpose

This standard specifies the security requirements that will be satisfied by a cryptographic module utilized within a security

system protecting sensitive but unclassified information. The standard provides four increasing, qualitative levels of security:

Level 1, Level 2, Level 3 and Level 4. These levels are intended to cover the wide range of potential applications and

environments in which cryptographic modules may be employed.

Validation Program

Products that claim conformance to this standard are validated by the Cryptographic Module Validation Program (CMVP)

which is a joint effort between National Institute of Standards and Technology (NIST) and the Communications Security

Establishment (CSE) of the Government of Canada. Products validated as conforming to FIPS 140-2 are accepted by the

Federal agencies of both countries for the protection of sensitive information (United States) or Designated Information

(Canada).

In the CMVP, vendors of cryptographic modules use independent, accredited testing laborites to have their modules tested.

National Voluntary Laboratory Accreditation Program (NVLAP) accredited laboratories perform cryptographic module

compliance/conformance testing.

Seagate Enterprise SED

The SED drives referenced in this Product Manual have been validated by CMVP and have been thoroughly tested to satisfy

FIPS 140-2 Level 2 requirements. In order to operate in FIPS Approved Mode of Operation, these SEDs require security

initialization. For more information, refer to 'Security Rules' section in the 'Security Policy' document uploaded on the NIST

website - Cert# 1299: Seagate Secure® Enterprise Self-Encrypting Drives FIPS 140 Module: http://csrc.nist.gov/groups/

STM/cmvp/documents/140-1/140val-all.htm

Security Level 2

Security Level 2 enhances the physical security mechanisms of a Security Level 1 cryptographic module by adding the

requirement for tamper-evidence, which includes the use of tamper-evident coatings or seals on removable covers of the

module. Tamper-evident coatings or seals are placed on a cryptographic module so that the coating or seal must be bro-

ken to attain physical access to the critical security parameters (CSP) within the module. Tamper-evident seals are placed

on covers to protect against unauthorized physical access. In addition Security Level 2 requires, at a minimum, role-based

authentication in which a cryptographic module authenticates the authorization of an operator to assume a specific role

and perform a corresponding set of services.

Figure 10. Example of FIPS tamper evidence labels.

Note. Image is for reference only, may not represent actual drive.

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8.0 ABOUT SELF-ENCRYPTING DRIVES

Self-encrypting drives (SEDs) offer encryption and security services for the protection of stored data, commonly known as

“protection of data at rest.” These drives are compliant with the Trusted Computing Group (TCG) Enterprise Storage

Specifications as detailed in Section 2.3.

The Trusted Computing Group (TCG) is an organization sponsored and operated by companies in the computer, storage

and digital communications industry. Seagate’s SED models comply with the standards published by the TCG.

To use the security features in the drive, the host must be capable of constructing and issuing the following two SCSI

commands:

• Security Protocol Out

• Security Protocol In

These commands are used to convey the TCG protocol to and from the drive in their command payloads.

8.1

DATA ENCRYPTION

Encrypting drives use one inline encryption engine for each port, employing AES-128 data encryption in Cipher Block

Chaining (CBC) mode to encrypt all data prior to being written on the media and to decrypt all data as it is read from the

media. The encryption engines are always in operation, cannot be disabled, and do not detract in any way from the

performance of the drive.

The 32-byte Data Encryption Key (DEK) is a random number which is generated by the drive, never leaves the drive, and is

inaccessible to the host system. The DEK is itself encrypted when it is stored on the media and when it is in volatile

temporary storage (DRAM) external to the encryption engine. A unique data encryption key is used for each of the drive's

possible16 data bands (see Section 8.5).

8.2

CONTROLLED ACCESS

The drive has two security partitions (SPs) called the "Admin SP" and the "Locking SP." These act as gatekeepers to the

drive security services. Security-related commands will not be accepted unless they also supply the correct credentials to

prove the requester is authorized to perform the command.

8.2.1 Admin SP

The Admin SP allows the drive's owner to enable or disable firmware download operations (see Section 8.4). Access to the

Admin SP is available using the SID (Secure ID) password or the MSID (Makers Secure ID) password.

8.2.2 Locking SP

The Locking SP controls read/write access to the media and the cryptographic erase feature. Access to the Locking SP is

available using the BandMasterX or EraseMaster passwords. Since the drive owner can define up to 16 data bands on the

drive, each data band has its own password called BandMasterX where X is the number of the data band (0 through 15).

8.2.3 Default password

When the drive is shipped from the factory, all passwords are set to the value of MSID. This 32-byte random value is printed

on the drive label and it can be read by the host electronically over the I/O. After receipt of the drive, it is the responsibility of

the owner to use the default MSID password as the authority to change all other passwords to unique owner-specified

values.

8.3

RANDOM NUMBER GENERATOR (RNG)

The drive has a 32-byte hardware RNG that it is uses to derive encryption keys or, if requested to do so, to provide random

numbers to the host for system use, including using these numbers as Authentication Keys (passwords) for the drive’s

Admin and Locking SPs.

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8.4

DRIVE LOCKING

In addition to changing the passwords, as described in Section 8.2.3, the owner should also set the data access controls for

the individual bands.

The variable "LockOnReset" should be set to "PowerCycle" to ensure that the data bands will be locked if power is lost. This

scenario occurs if the drive is removed from its cabinet. The drive will not honor any data read or write requests until the

bands have been unlocked. This prevents the user data from being accessed without the appropriate credentials when the

drive has been removed from its cabinet and installed in another system.

When the drive is shipped from the factory, the firmware download port is locked and the drive will reject any attempt to

download new firmware. The drive owner must use the SID credential to unlock the firmware download port before firmware

updates will be accepted.

8.5

DATA BANDS

When shipped from the factory, the drive is configured with a single data band called Band 0 (also known as the Global Data

Band) which comprises LBA 0 through LBA max. The host may allocate Band1 by specifying a start LBA and an LBA range.

The real estate for this band is taken from the Global Band. An additional 14 Data Bands may be defined in a similar way

(Band2 through Band15) but before these bands can be allocated LBA space, they must first be individually enabled using

the EraseMaster password.

Data bands cannot overlap but they can be sequential with one band ending at LBA (x) and the next beginning at LBA (x+1).

Each data band has its own drive-generated encryption key and its own user-supplied password. The host may change the

Encryption Key (see Section 8.6) or the password when required. The bands should be aligned to 4K LBA boundaries.

8.6

CRYPTOGRAPHIC ERASE

A significant feature of SEDs is the ability to perform a cryptographic erase. This involves the host telling the drive to change

the data encryption key for a particular band. Once changed, the data is no longer recoverable since it was written with one

key and will be read using a different key. Since the drive overwrites the old key with the new one, and keeps no history of

key changes, the user data can never be recovered. This is tantamount to an instantaneous data erase and is very useful if

the drive is to be scrapped or redispositioned.

8.7

AUTHENTICATED FIRMWARE DOWNLOAD

In addition to providing a locking mechanism to prevent unwanted firmware download attempts, the drive also only accepts

download files which have been cryptographically signed by the appropriate Seagate Design Center.

Three conditions must be met before the drive will allow the download operation:

1. The download must be an SED file. A standard (base) drive (non-SED) file will be rejected.

2. The download file must be signed and authenticated.

3. As with a non-SED drive, the download file must pass the acceptance criteria for the drive. For example it must be appli-

cable to the correct drive model, and have compatible revision and customer status.

8.8

POWER REQUIREMENTS

The standard drive models and the SED drive models have identical hardware, however the security and encryption portion

of the drive controller ASIC is enabled and functional in the SED models. This represents a small additional drain on the 5V

supply of about 30mA and a commensurate increase of about 150mW in power consumption. There is no additional drain on

the 12V supply. See the tables in Section 6.2 for power requirements on the standard (non-SED) drive models.

8.9

SUPPORTED COMMANDS

The SED models support the following two commands in addition to the commands supported by the standard (non-SED)

models as listed in Table 16:

• Security Protocol Out (B5h)

• Security Protocol In (A2h)

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9.0 DEFECT AND ERROR MANAGEMENT

Seagate continues to use innovative technologies to manage defects and errors. These technologies are designed to

increase data integrity, perform drive self-maintenance, and validate proper drive operation.

SCSI defect and error management involves drive internal defect/error management and FC system error considerations

(errors in communications between the initiator and the drive). In addition, Seagate provides the following technologies used

to increase data integrity and drive reliability:

• Background Media Scan (see Section 9.4)

• Media Pre-Scan (see Section 9.5)

• Deferred Auto-Reallocation (see Section 9.6)

• Idle Read After Write (see Section 9.7)

The read error rates and specified storage capacities are not dependent on host (initiator) defect management routines.

9.1

DRIVE INTERNAL DEFECTS/ERRORS

During the initial drive format operation at the factory, media defects are identified, tagged as being unusable, and their

locations recorded on the drive primary defects list (referred to as the “P’ list and also as the ETF defect list). At factory

format time, these known defects are also reallocated, that is, reassigned to a new place on the medium and the location

listed in the defects reallocation table. The “P” list is not altered after factory formatting. Locations of defects found and

reallocated during error recovery procedures after drive shipment are listed in the “G” list (defects growth list). The “P” and

“G” lists may be referenced by the initiator using the Read Defect Data command.

Details of the SCSI commands supported by the drive are described in the Fibre Channel Interface Manual. Also, more

information on the drive Error Recovery philosophy is presented in the Fibre Channel Interface Manual.

9.2

DRIVE ERROR RECOVERY PROCEDURES

When an error occurs during drive operation, the drive, if programmed to do so, performs error recovery procedures to

attempt to recover the data. The error recovery procedures used depend on the options previously set in the Error Recovery

Parameters mode page. Error recovery and defect management may involve using several SCSI commands described in

the Fibre Channel Interface Manual. The drive implements selectable error recovery time limits required in video

applications.

The error recovery scheme supported by the drive provides a way to control the total error recovery time for the entire

command in addition to controlling the recovery level for a single LBA. The total amount of time spent in error recovery for a

command can be limited using the Recovery Time Limit bytes in the Error Recovery mode page. The total amount of time

spent in error recovery for a single LBA can be limited using the Read Retry Count or Write Retry Count bytes in the Error

Recovery mode page.

The drive firmware error recovery algorithms consists of 13 levels for read recoveries and five levels for write. Each level

may consist of multiple steps, where a step is defined as a recovery function involving a single re-read or re-write attempt.

The maximum level used by the drive in LBA recovery is determined by the read and write retry counts.

Table 5 equates the read and write retry count with the maximum possible recovery time for read and write recovery of

individual LBAs. The times given do not include time taken to perform reallocations. Reallocations are performed when the

ARRE bit (for reads) or AWRE bit (for writes) is one, the RC bit is zero, and the recovery time limit for the command has not

yet been met. Time needed to perform reallocation is not counted against the recovery time limit.

When the RC bit is one, reallocations are disabled even if the ARRE or AWRE bits are one. The drive will still perform data

recovery actions within the limits defined by the Read Retry Count, Write Retry Count, and Recovery Time Limit parameters.

However, the drive does not report any unrecovered errors.

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Table 5 Read and write retry count maximum recovery times [1]

WRITE

READ RETRY MAXIMUM RECOVERY TIME PER LBA

MAXIMUM RECOVERY TIME PER LBA

(CUMULATIVE, MSEC)

RETRY

COUNT

(CUMULATIVE, MSEC)

COUNT

51.87

23.94

35.91

39.9

59.85

203.49

231.42

295.26

327.18

359.10

446.88

538.65

570.57

598.50

1,534.97

51.87

79.8

5 (default)

107.73

11 (default)

[1] These values are subject to change.

Setting these retry counts to a value below the default setting could result in an increased unrecovered error rate which

may exceed the value given in this product manual. A setting of zero (0) will result in the drive not performing error

recovery.

For example, suppose the Read/Write Recovery page has the RC bit set to 0, read retry count set to 4, and the recovery

time limit field (Mode Sense page 01, bytes 10 and 11) set to FF FF hex (maximum). A four LBA Read command is

allowed to take up to 253.11 msec recovery time for each of the four LBAs in the command. If the recovery time limit is

set to 00 C8 hex (200 msec decimal) a four LBA read command is allowed to take up to 200 msec for all error recovery

within that command. The use of the Recovery Time Limit field allows finer granularity on control of the time spent in

error recovery. The recovery time limit only starts counting when the drive is executing error recovery and it restarts on

each command. Therefore, each command’s total recovery time is subject to the recovery time limit. Note: A recovery

time limit of 0 will use the drive’s default value of FF FF. Minimum recovery time limit is achieved by setting the Recov-

ery Time Limit field to 00 01.

9.3

FC-AL SYSTEM ERRORS

Information on the reporting of operational errors or faults across the interface is given in the Fibre Channel Interface

Manual. The FCP Response returns information to the host about numerous kinds of errors or faults. The Receive

Diagnostic Results reports the results of diagnostic operations performed by the drive.

Status returned by the drive to the initiator is described in the Fibre Channel Interface Manual. Status reporting plays a role in

systems error management and its use in that respect is described in sections where the various commands are discussed.

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9.4

BACKGROUND MEDIA SCAN

Background Media Scan (BMS) is a self-initiated media scan. BMS is defined in the T10 document SPC-4 available from the

T10 committee. BMS performs sequential reads across the entire pack of the media while the drive is idle. In RAID arrays,

BMS allows hot spare drives to be scanned for defects prior to being put into service by the host system. On regular duty

drives, if the host system makes use of the BMS Log Page, it can avoid placing data in suspect locations on the media.

Unreadable and recovered error sites will be logged or reallocated per ARRE/AWRE settings.

With BMS, the host system can consume less power and system overhead by only checking BMS status and results rather

than tying up the bus and consuming power in the process of host-initiated media scanning activity.

Since the background scan functions are only done during idle periods, BMS causes a negligible impact to system

performance. The first BMS scan for a newly manufactured drive is performed as quickly as possible to verify the media and

protect data by setting the “Start time after idle” to 5ms, all subsequent scans begin after 500ms of idle time. Other features

that normally use idle time to function will function normally because BMS functions for bursts of 800ms and then suspends

activity for 100ms to allow other background functions to operate.

BMS interrupts immediately to service host commands from the interface bus while performing reads. BMS will complete any

BMS-initiated error recovery prior to returning to service host-initiated commands. Overhead associated with a return to host-

servicing activity from BMS only impacts the first command that interrupted BMS, this results in a typical delay of about 1 ms.

9.5

MEDIA PRE-SCAN

Media Pre-Scan is a feature that allows the drive to repair media errors that would otherwise have been found by the host

system during critical data accesses early in the drive’s life. The default setting for Media Pre-Scan is enabled on standard

products. Media Pre-Scan checks each write command to determine if the destination LBAs have been scanned by BMS. If

the LBAs have been verified, the drive proceeds with the normal write command. If the LBAs have not been verified by BMS,

Pre-Scan will convert the write to a write verify to certify that the data was properly written to the disk.

Note. During Pre-Scan write verify commands, write performance may decrease by 50% until Pre-Scan completes.

Write performance testing should be performed after Pre-Scan is complete. This may be checked by reading the

BMS status.

To expedite the scan of the full pack and subsequently exit from the Pre-Scan period, BMS will begin scanning immediately

when the drive goes to idle during the Pre-Scan period. In the event that the drive is in a high transaction traffic environment

and is unable to complete a BMS scan within 24 power on hours BMS will disable Pre-Scan to restore full performance to the

system.

9.6

DEFERRED AUTO-REALLOCATION

Deferred Auto-Reallocation (DAR) simplifies reallocation algorithms at the system level by allowing the drive to reallocate

unreadable locations on a subsequent write command. Sites are marked for DAR during read operations performed by the

drive. When a write command is received for an LBA marked for DAR, the auto-reallocation process is invoked and attempts

to rewrite the data to the original location. If a verification of this rewrite fails, the sector is re-mapped to a spare location.

This is in contrast to the system having to use the Reassign Command to reassign a location that was unreadable and then

generate a write command to rewrite the data. DAR is most effective when AWRE and ARRE are enabled—this is the default

setting from the Seagate factory. With AWRE and ARRE disabled DAR is unable to reallocate the failing location and will

report an error sense code indicating that a write command is being attempted to a previously failing location.

9.7

IDLE READ AFTER WRITE

Idle Read After Write (IRAW) utilizes idle time to verify the integrity of recently written data. During idle periods, no active

system requests, the drive reads recently written data from the media and compares it to valid write command data resident

in the drives data buffer. Any sectors that fail the comparison result in the invocation of a rewrite and auto-reallocation

process. The process attempts to rewrite the data to the original location. If a verification of this rewrite fails, the sector is re-

mapped to a spare location.

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10.0 INSTALLATION

Cheetah 15K.7 FC disk drive installation is a plug-and-play process. There are no jumpers, switches, or terminators on the

drive. Simply plug the drive into the host’s 40-pin Fibre Channel backpanel connector (FC-SCA)—no cables are required.

See Section 11.5 for additional information about this connector.

Use the FC-AL interface to select drive ID and all option configurations for devices on the loop.

If multiple devices are on the same FC-AL and physical addresses are used, set the device selection IDs (SEL IDs) on the

backpanel so that no two devices have the same selection ID. This is called the hard assigned arbitrated loop physical

address (AL_PA). There are 125 AL_PAs available (see Table 27). If you set the AL_PA on the backpanel to any value other

than 0, the device plugged into the backpanel’s SCA connector inherits this AL_PA. In the event you don’t successfully

assign unique hard addresses (and therefore have duplicate selection IDs assigned to two or more devices), the FC-AL

generates a message indicating this condition. If you set the AL_PA on the backpanel to a value of 0, the system issues a

unique soft-assigned physical address automatically.

Loop initialization is the process used to verify or obtain an address. The loop initialization process is performed when power

is applied to the drive, when a device is added or removed from the Fibre Channel loop, or when a device times out

attempting to win arbitration.

• Set all option selections in the connector prior to applying power to the drive. If you change options after applying power to

the drive, recycle the drive power to activate the new settings.

• It is not necessary to low-level format this drive. The drive is shipped from the factory low-level formatted in 512-byte logi-

cal blocks. You need to reformat the drive only if you want to select a different logical block size.

10.1 DRIVE ID/OPTION SELECTION

All drive options are made through the interface connector (J1). Table 24 provides the pin descriptions for the 40-pin Fibre

Channel single connector (J1).

10.2 DRIVE ORIENTATION

The drive may be mounted in any orientation. All drive performance characterizations, however, have been done with the

drive in horizontal (discs level) and vertical (drive on its side) orientations, which are the two preferred mounting orientations.

10.3 COOLING

The host enclosure must dissipate heat from the drive. You should confirm that the host enclosure is designed to ensure that

the drive operates within the temperature measurement guidelines described in Section 6.4.1. In some cases, forced airflow

may be required to keep temperatures at or below the temperatures specified in Section 6.4.1.

If forced air is necessary, possible air-flow patterns are shown in Figure 11. The air-flow patterns are created by fans either

forcing or drawing air as shown in the illustrations. Conduction, convection, or other forced air-flow patterns are acceptable

as long as the temperature measurement guidelines of Section 6.4.1 are met.

Above unit

Under unit

Above unit

Under unit

Air flows in the direction shown or

in reverse direction (side to side)

Air flows in the direction shown (back to front)

or in reverse direction (front to back)

Figure 11. Air flow

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10.4 DRIVE MOUNTING

Mount the drive using the bottom or side mounting holes. If you mount the drive using the bottom holes, ensure that you do

not physically distort the drive by attempting to mount it on a stiff, non-flat surface.

The allowable mounting surface stiffness is 80 lb/in (14.0 N/mm). The following equation and paragraph define the allowable

mounting surface stiffness:

K x X = F < 15lb = 67N

where K is the mounting surface stiffness (units in lb/in or N/mm) and X is the out-of-plane surface distortion (units in inches

or millimeters). The out-of-plane distortion (X) is determined by defining a plane with three of the four mounting points fixed

and evaluating the out-of-plane deflection of the fourth mounting point when a known force (F) is applied to the fourth point.

Note. Before mounting the drive in any kind of 3.5-inch to 5.25-inch adapter frame, verify with Seagate Technology that

the drive can meet the shock and vibration specifications given herein while mounted in such an adapter frame.

Adapter frames that are available may not have a mechanical structure capable of mounting the drive so that it

can meet the shock and vibration specifications listed in this manual.

10.5 GROUNDING

Signal ground (PCBA) and HDA ground are connected together in the drive and cannot be separated by the user. The

equipment in which the drive is mounted is connected directly to the HDA and PCBA with no electrically isolating shock

mounts. If it is desired for the system chassis to not be connected to the HDA/PCBA ground, the systems integrator or user

must provide a nonconductive (electrically isolating) method of mounting the drive in the host equipment.

Increased radiated emissions may result if you do not provide the maximum surface area ground connection between

system ground and drive ground. This is the system designer’s and integrator’s responsibility.

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11.0 INTERFACE REQUIREMENTS

This section partially describes the interface requirements as implemented on Cheetah 15K.7 FC drives. Additional

information is provided in the Fibre Channel Interface Manual (part number 100293070).

11.1 FC-AL FEATURES

This section lists the Fibre Channel-specific features supported by Cheetah 15K.7 FC drives.

11.1.1 Fibre Channel link service frames

Table 6 lists the link services supported by Cheetah 15K.7 FC drives.

Table 6 Link services supported

TYPE OF FRAME

LINK SERVICE

Basic link service frames

Basic link service reply frames

Abort Sequence (ABTS)

Basic_Accept (BA_ACC)

Basic_Reject (BA_RJT)

Extended link service frames

N_Port Login (PLOGI)

Fabric Login (FLOGI)

Logout (LOGO)

Process Login (PRLI)

Process Logout (PRLO)

Read Link Status (RLS)

Fabric Address Notification (FAN)

Port Discovery (PDISC)

Address Discovery (ADISC)

Third-party Process Logout (TRPLO)

Extended link service reply frames

Fibre Channel Services

Accept (ACC)

Link Service Reject (LS_RJT)

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11.1.2 Fibre Channel task management functions

Table 7 lists the Fibre Channel SCSI Fibre Channel Protocol (FC SCSI FCP) task management functions supported.

Table 7 Fibre Channel SCSI FCP task management functions

TASK NAME

Terminate task

Clear ACA

SUPPORTED

Yes

Target reset

Clear task set

Abort task set

11.1.3 Fibre Channel task management responses

Table 8 lists the FC SCSI FCP response codes returned for task management functions supported.

Table 8 FC SCSI FCP response codes

FUNCTION NAME

Function complete

Function not supported

Function reject

RESPONSE CODE

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11.1.4 Fibre Channel port login

Table 9 identifies the required content of the N_Port Login (PLOGI) payload from an initiator.

Table 9 N_Port login (PLOGI) payload

BYTES

0-15

Common

16-31

32-35

36-47

48-51

52-63

64-67

68-79

80-83

84-95

96-99

100-111

112-115

Class 1

Class 2

Class 3

Reserved

Vendor

Version

Indicates a four-bit (hex) field is not checked.

Indicates a single bit is not checked.

BB-Credit. This field is not checked. The FC-AL drive uses BB-Credit of zero (0).

Common features. This binary field selects the common features requested by the initiator login.

MSB

Continuously increasing offset

Random relative offset

Valid version level

Must = 1

Not checked. Port Login Accept will return a 0—not supported.

N_Port/F_Port

Must = 0, N_Port

Must = 1

Alternate credit model

Other bits reserved

xxx XX

Receive buffer field size. The FS field in the common and Class 3 parameters is checked for the range 128 < FS <

2,112 and a multiple of four bytes. For multiple frame sequences, all frames but the last frame of the sequence

must be this size. Only the receive buffer field size in the Class 3 parameters is used.

Port name (initiator’s)—saved with the login parameters. If a change of the port name/AL_PA address association

is detected during a Port DISCovery, and implicit logout occurs and the initiator returns a LS_RJT.

Node name. The node name is not checked or saved by the drive.

Service options Class 3 only.

MSB

Class valid

Must = 1

Intermix

Stacked connection req.

Sequential delivery

Other bits reserved

xxx XX

Initiator control

MSB XID reassign

Proc Assc

10 or 11 causes the login to be rejected. Other values are

accepted.

Other bits

XXX

Concurrent sequences

Must be a value greater than 0.

Open sequences per exchange

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11.1.5 Fibre Channel port login accept

Table 10 identifies the N_Port Login access payload values.

Table 10 N_Port Login Accept (ACC) payload

BYTES

0-15

Common

16-31

32-35

36-47

48-51

52-63

64-67

68-79

80-83

84-95

96-99

100-111

112-115

Class 1

Class 2

Class 3

Reserved

Vendor -

Version

Table 3:

Bytes (22, 23 and 24) and (30, 31 and 32) are currently factory set to 00 04 CF respectively (subject to change).

Receive buffer field size. The drive returns and uses the receive buffer size from the N_Port Login Class 3 receive

buffer.

Unique identifier. This 24-bit field is uniquely assigned to the drive. This same UI appears in the Port Name and

Node Name fields.

Byte port identifier field.

P_LOGI received on Node.

P_LOGI received on Port A.

P_LOGI received on Port B.

11.1.6 Fibre Channel Process Login

Table 11 lists the process login payload data.

Table 11 Process Login (PLRI) payload

BYTES

0-15

16-19

XXIndicates fields that are not used.

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11.1.7 Fibre Channel Process Login Accept

Table 12 lists Cheetah 15K.7 FC process login accept payload data.

Table 12 Process Login Accept (ACC) payload

BYTES

0-15

16-31

11.1.8 Fibre Channel fabric login

Table 13 lists the fabric login payload from the drive.

Table 13 Fabric Login (FLOGI) payload

BYTES

0-15

Common

16-31

32-35

36-47

48-51

52-63

64-67

68-79

80-83

84-95

96-99

100-111

CC CC CC UI

CC CC

CC UI

Class 1

Class 2

Class 3

Reserved

Vendor -

Version

112-115 00

Bytes (22, 23 and 24) and (30, 31 and 32) are currently factory set to 00 04 CF respectively (subject to change).

Unique identifier. This 24-bit field is uniquely assigned to the drive. This same UI appears in the Port Name and

Node Name fields.

Port identifier field.

FLOGI originated on Port A.

FLOGI originated on Port B.

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11.1.9 Fibre Channel fabric accept login

Table 14 lists the required content of the Fabric Login Accept (ACC) payload from the fabric.

Table 14 Fabric Login Accept (ACC) payload

BYTES

0-15

BB BB CF XX FS FS R_ A_

Common

16-31

32-35

36-47

48-51

52-63

64-67

68-79

80-83

84-95

96-99

100-111

D_ T0

PN PN PN PN PN PN PN PN NN NN NN NN

NN NN NN NN

XX XX XX XX

OS OS XX XX

XX XX XX XX

XX XX XX XX XX XX XX XX XX XX XX XX Class 1

XX XX XX XX XX XX XX XX XX XX XX XX Class 2

SO SO xx

XX XX FS FS XX xx

XX XX Class 3

XX XX XX XX XX XX XX XX XX XX XX XX Reserved

XX XX XX XX XX XX XX XX XX XX XX XX Vendor -

Version

112-115 XX XX XX XX

Indicates a four-bit (hex) field is not checked.

Indicates a single bit is not checked.

BB-Credit. This field is not checked. The FC-AL drive uses BB-Credit of zero (0).

Common features. This binary field selects the common features requested by the fabric login.

MSB

Continuously increasing offset

Random relative offset

Valid version level

N_Port/F_Port

Must = 1, F_Port

Must = 1

Alternate credit model

Other bits reserved

xxx XX

Receive buffer field size. The FS field in the common and Class 3 parameters is checked for the range 128 < FS <

2,112 and a multiple of four bytes. The receive buffer field size in the Class 3 parameters is used. The drive uses

the lower FS of Fabric Login Accept or N_Port Login when sending frames to an initiator.

Port Name. The fabric port name is saved with the login parameters. If a change of the port name is detected dur-

ing a FAN, an implicit logout occurs and a LS_RJT is returned to the fabric.

Node Name. The drive does not check or save the node name.

Service Options—Class 3 only.

MSB

Class valid

Must = 1

Intermix

Stacked connection req.

Sequential delivery

Other bits reserved

Must = 1

xxx XX

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11.1.10 Fibre Channel Arbitrated Loop options

Table 15 lists the FC-AL options supported by Cheetah 15K.7 FC drives.

Table 15 FC-AL options supported

OPTION

SUPPORTED

OPEN Half Duplex

OPEN Full Duplex

Private Loop

Accepted from another device.

Sent to open another device. Accepted from another device.

Yes

Public Loop

Old Port State

Loop Position

Loop Position Report

Yes

11.2 DUAL PORT SUPPORT

Cheetah 15K.7 FC drives have two independent FC-AL ports. These ports may be connected on independent loops or on

the same loop. Port A and Port B may be connected in any order or combination.

• If both ports are connected on independent loops and hard addressing is used, the drive interface address is selected

through the interface connector, both ports will seek the same loop address. If no conflict, both ports will have the same

loop address.

• If both ports are connected in the same loop and hard addressing is used, at least one port will attempt taking a soft

address to prevent an address conflict.

Note. When a Cheetah 15K.7 FC drive is connected in loops with previous Seagate FC drive products:

Barracuda 4LP FC (ST32171FC, ST34371FC, and ST34571FC)

Barracuda 9FC (ST19171FC)

Cheetah 4LP FC (ST34501FC)

Cheetah 9FC (ST19101FC)

the connection of Port A and B for these products must follow the requirements in their product manuals.

Subject to buffer availability, the Cheetah 15K.7 FC drives support:

• Concurrent port transfers—The drive supports receiving transfers on both ports at the same time when the ports are on

independent loops.

• Full duplex—The drive supports sending FCP_Data, FCP_RSP, FCP_XFR_RDY and ELS transfers while receiving frames

on both ports.

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11.3 SCSI COMMANDS SUPPORTED

Table 16 lists the SCSI commands supported by Cheetah 15K.7 FC drives.

Table 16 Supported commands

Executable state of standard SCSI commands in the presence of

LBA banding (applies to SED models only)

Affected LBA

User Data Unlocked

Affected LBA

Locked

Command Supported

Affectsentire Accessed ReadLock=Write ReadLock=Write

code

00h

01h

03h

(Y/N) [4]

Command name

Test unit ready

Rezero unit

Drive (Y/N)

(Y/N)

Lock=False

Executable

Lock=True

Executable

Request sense

Extended sense

Field pointer bytes

Actual retry count bytes

Format unit [1]

Reassign blocks

Read

04h

07h

08h

0Ah

0Bh

12h

Executable

Check Condition

Executable

Write

Seek

Inquiry

Executable

Vital product data page (00h)

Unit serial number page (80h)

Implemented operating def. page

(81h)

Device Identification page (83h)

Firmware numbers page (C0h)

Date code page (C1h)

Jumper settings page (C2h)

Device Behavior page (C3h)

15h

16h

Mode select (same pages as Mode

Sense command shown below) [3]

Executable

Reserve

3rd party reserved

Extent reservation

Release

17h

18h

1Ah

Executable

Copy

Mode sense

Unit attention page (00h)

Error recovery page (01h)

Disconnect/reconnect control (page

02h)

Format page (03h)

Rigid disk drive geometry page

(04h)

Verify error recovery page (07h)

Caching parameters page (08h)

Control mode page (0Ah)

Fibre Channel Interface Control

page (19h)

Power control page (1Ah)

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Table 16 Supported commands (continued)

Executable state of standard SCSI commands in the presence of

LBA banding (applies to SED models only)

Affected LBA

User Data Unlocked

Affected LBA

Locked

Command Supported

Affectsentire Accessed ReadLock=Write ReadLock=Write

code

(Y/N) [4]

Command name

Drive (Y/N)

(Y/N)

Lock=False

Lock=True

Information exceptions control page

(1Ch)

Background Scan mode subpage

(01h)

1Bh

1Ch

Start unit/stop unit

Receive diagnostic results

Supported diagnostics pages

Translate page

Executable

Enclosure services page

Send diagnostics page

Supported diagnostics pages

Translate page

1Dh

Executable

25h

28h

Read capacity

Read extended

Disable page out

Force unit access

Relative address

Write extended

2Ah

Disable page out

Force unit access

Relative address

Seek extended

2Bh

2Eh

Write and verify

Executable

Check Condition

Disable page out

Byte check

Relative address

Verify (10) (BYTCHK = 0)

Verify (10) (BYTCHK = 1)

Disable page out

Byte check

2Fh

Executable

Check Condition

Relative address

Search data high

Search data equal

Search data low

Set limits

30h

31h

32h

33h

34h

35h

36h

37h

39h

3Ah

3Bh

Prefetch

Executable

Check Condition

Executable

Synchronize cache

Lock-unlock-cache

Read defect data

Compare

Executable

Copy and verify

Write buffer

Check Condition

Executable

(all modes except modes 4h - 7h, 0Eh, and 0Fh)

Executable

(modes 4h - 7h, 0Eh, and 0Fh)

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Table 16 Supported commands (continued)

Executable state of standard SCSI commands in the presence of

LBA banding (applies to SED models only)

Affected LBA

User Data Unlocked

Affected LBA

Locked

Command Supported

Affectsentire Accessed ReadLock=Write ReadLock=Write

code

(Y/N) [4]

Command name

Drive (Y/N)

(Y/N)

Lock=False

Lock=True

Write combined header and data

mode (0)

Write data mode (2)

Download microcode mode (4)

Download microcode and save

modes (5)

Download microcode with offsets

mode (6)

Download microcode with offsets

and save mode (7)

Firmware download option [2]

3Ch

Read buffer (Mode 1Ch -- Error

Retrieval Mode)

Executable

Read buffer

Check Condition

Read combined header and data

mode (0)

Read data mode (2)

Read descriptor mode (3)

Read long

3Eh

3Fh

Check Condition

Executable

Check Condition

Check Condtion

Check Condition

Write long (10) (WR_UNCOR = 0)

Write long (10) (WR_UNCOR = 1)

Change definition

Write same (10)

40h

41h

Executable

PBdata

LBdata

42-4Bh

4Ch

Not used

Log Select

Executable

4Dh

Log Sense

Support Log page (00h)

Write Error Counter page (02h)

Read Error Counter page (03h)

Read Reverse Error Counter page

(04h)

Verify Error Counter page (05h)

Non-medium Error Counter page

(06h)

Temperature page (0Dh)

Application Client page (0Fh)

Self Test Results page (10h)

Background Medium Scan page

(15h)

Cache Statistics Counter page

(37h)

Factory Log page (3Eh)

Not used

4E-4Fh

50h

XD write

51h

XP write

52h

XD read

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Table 16 Supported commands (continued)

Executable state of standard SCSI commands in the presence of

LBA banding (applies to SED models only)

Affected LBA

User Data Unlocked

Affected LBA

Locked

Command Supported

Affectsentire Accessed ReadLock=Write ReadLock=Write

code

53-54h

55h

(Y/N) [4]

Command name

Not used

Drive (Y/N)

(Y/N)

Lock=False

Lock=True

Mode Select (10) [3]

Reserved (10)

56h

3rd party reserve

Extent reservation

Released (10)

57h

58-59h

5Ah

Not used

Mode Sense (10) [3]

Not used

5B-5Dh

Persistent reserve in

Persistent reserve out

Not used

Executable

60-7Eh

7Fh

Y (PI only)

Write Same (32)

Verify (32) (BYTCHK = 0)

Verify (32) (BYTCHK = 1)

XD write extended

Rebuild

Executable

Check Condition

Executable

7Fh

Y (PI only)

7Fh

Y (PI only)

Check Condition

80h

81h

82h

Regenerate

83-8Eh

8Fh

Not used

Y (PI only)

Verify (16) (BYTCHK = 0)

Verify (16) (BYTCHK = 1)

Write same (16)

Report LUNS

Executable

8Fh

Check Condition

Executable

93h

A0h

A2h

Security Protocol In

Executable

(SED only)

A3h

B5h

Report Device Identifier

Security Protocol Out

Executable

(SED only)

C0-DFh

EO-FFh

Not used

[1] Cheetah 15K.7 FC drives can format to 512, 520, 524 or 528 bytes per logical block.

[2] Warning. Power loss during flash programming can result in firmware corruption. This usually makes the drive inopera-

ble.

[3] Reference Mode Sense command 1Ah for mode pages supported.

[4] Y = Yes. Command is supported.

N = No. Command is not supported.

A = Support is available on special request.

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11.3.1 Inquiry data

Table 17 lists the Inquiry command data that the drive should return to the initiator per the format given in the Fibre Channel

Interface Manual.

Table 17 Cheetah 15K.7 FC inquiry data

BYTES

DATA (HEX)

0-15

[53

xx**

43]

Vendor ID

Product ID

16-31

32-47

48-63

64-79

80-95

96-111

112-127

128-143

32* *Copyright

30* 30* 39*

72 69 67

notice

SCSI Revision support. Refer to the SPC release documentation for definitions.

PP 50 = Inquiry data for an Inquiry command received on Port A.

70 = Inquiry data for an Inquiry command received on Port B.

R# Four ASCII digits representing the last four digits of the product firmware release number.

S# Eight ASCII digits representing the eight digits of the product serial number.

[ ]

Bytes 18 through 26 reflect model of drive in hex format.

11.3.2 Mode Sense data

The Mode Sense command provides a way for the drive to report its operating parameters to the initiator. The drive

maintains four sets of mode parameters:

1. Default values

Default values are hard-coded in the drive firmware stored in flash E-PROM (nonvolatile memory) on the drive’s PCB.

These default values can be changed only by downloading a complete set of new firmware into the flash E-PROM. An

initiator can request and receive from the drive a list of default values and use those in a Mode Select command to set up

new current and saved values, where the values are changeable.

2. Saved values

Saved values are stored on the drive’s media using a Mode Select command. Only parameter values that are allowed to

be changed can be changed by this method. Parameters in the saved values list that are not changeable by the Mode

Select command get their values from default values storage.

When power is applied to the drive, it takes saved values from the media and stores them as current values in volatile

memory. It is not possible to change the current values (or the saved values) with a Mode Select command before the

drive achieves operating speed and is “ready.” An attempt to do so results in a “Check Condition” status.

On drives requiring unique saved values, the required unique saved values are stored into the saved values storage

location on the media prior to shipping the drive. Some drives may have unique firmware with unique default values also.

On standard OEM drives, the saved values are taken from the default values list and stored into the saved values stor-

age location on the media prior to shipping.

3. Current values

Current values are volatile values being used by the drive to control its operation. A Mode Select command can be used

to change the values identified as changeable values. Originally, current values are installed from saved or default val-

ues after a power on reset, hard reset, or Bus Device Reset message.

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4. Changeable values

Changeable values form a bit mask, stored in nonvolatile memory, that dictates which of the current values and saved

values can be changed by a Mode Select command. A one (1) indicates the value can be changed. A zero (0) indicates

the value is not changeable. For example, in Table 18, refer to Mode page 81, in the row entitled “CHG.” These are hex

numbers representing the changeable values for Mode page 81. Note in columns 5 and 6 (bytes 04 and 05), there is 00h

which indicates that in bytes 04 and 05 none of the bits are changeable. Note also that bytes 06, 07, 09, 10, and 11 are

not changeable, because those fields are all zeros. In byte 02, hex value FF equates to the binary pattern 11111111. If

there is a zero in any bit position in the field, it means that bit is not changeable. Since all of the bits in byte 02 are ones,

all of these bits are changeable.

The changeable values list can only be changed by downloading new firmware into the flash E-PROM.

Note. Because there are often several different versions of drive control firmware in the total population of drives in the

field, the Mode Sense values given in the following tables may not exactly match those of some drives.

The following tables list the values of the data bytes returned by the drive in response to the Mode Sense command pages

for SCSI implementation (see the Fibre Channel Interface Manual).

Definitions:

SAV = Current saved value.

DEF = Default value. Standard OEM drives are shipped configured this way.

CHG = Changeable bits; indicates if default value is changeable.

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Table 18 Mode Sense data saved, default and changeable values for ST3600057FC drives

MODE DATA HEADER:

00 be 00 10 00 00 00 08

MODE PAGES:

DEF 81 0a c0 0b ff 00 00 00 05 00 ff ff

CHG 81 0a ff ff 00 00 00 00 ff 00 ff ff

DEF 82 0e 80 80 00 00 00 00 00 00 01 3a 00 00 00 00

CHG 82 0e ff ff 00 00 00 00 00 00 ff ff 00 00 00 00

DEF 83 16 bb d0 00 00 00 00 03 80 04 c4 02 00 00 01 00 c0 00 4c 40 00 00 00

CHG 83 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

DEF 84 16 01 8a 9a 08 00 00 00 00 00 00 00 00 00 00 00 00 00 00 3a a7 00 00

CHG 84 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

DEF 87 0a 00 0b ff 00 00 00 00 00 ff ff

CHG 87 0a 0f ff 00 00 00 00 00 00 ff ff

DEF 88 12 14 00 ff ff 00 00 ff ff ff ff 80 20 00 00 00 00 00 00

CHG 88 12 a5 00 00 00 ff ff ff ff 00 00 20 00 00 00 00 00 00 00

DEF 8a 0a 02 00 00 00 00 00 00 00 19 00

CHG 8a 0a 03 f0 00 00 00 00 00 00 00 00

DEF 99 06 00 00 00 00 00 00

CHG 99 06 00 ff 00 00 00 00

DEF 9a 0a 00 02 00 00 00 05 00 00 8c a0

CHG 9a 0a 00 03 ff ff ff ff 00 00 00 00

DEF 9c 0a 10 00 00 00 00 00 00 00 00 01

CHG 9c 0a 9d 0f ff ff ff ff ff ff ff ff

DEF dc 01 00 0c 01 01 00 18 00 18 00 00 00 00 00 00

CHG dc 01 00 0c 00 01 ff ff ff ff 00 00 00 00 00 00

DEF 80 06 00 80 0f 00 00 00

CHG 80 06 b7 c0 8f 00 00 00

READ CAPACITY DATA:

READ BUFFER

0 1 2 3 4 5 6 7 8 9 A B C D E F

ASCII

000000: 45 DD 2F AF 00 00 02 00 __ __ __ __ __ __ __ __ E./....

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Table 19 Mode Sense data default and changeable values for ST3450857FC drives

MODE DATA HEADER:

00 be 00 10 00 00 00 08

BLOCK DESCRIPTOR:

34 65 f8 70 00 00 02 00

MODE PAGES:

DEF 81 0a c0 0b ff 00 00 00 05 00 ff ff

CHG 81 0a ff ff 00 00 00 00 ff 00 ff ff

DEF 82 0e 80 80 00 00 00 00 00 00 01 3a 00 00 00 00

CHG 82 0e ff ff 00 00 00 00 00 00 ff ff 00 00 00 00

DEF 83 16 bb d0 00 00 00 00 03 80 04 c4 02 00 00 01 00 c0 00 4c 40 00 00 00

CHG 83 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

DEF 84 16 01 8a 9a 06 00 00 00 00 00 00 00 00 00 00 00 00 00 00 3a a7 00 00

CHG 84 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

DEF 87 0a 00 0b ff 00 00 00 00 00 ff ff

CHG 87 0a 0f ff 00 00 00 00 00 00 ff ff

DEF 88 12 14 00 ff ff 00 00 ff ff ff ff 80 20 00 00 00 00 00 00

CHG 88 12 a5 00 00 00 ff ff ff ff 00 00 20 00 00 00 00 00 00 00

DEF 8a 0a 02 00 00 00 00 00 00 00 12 c0

CHG 8a 0a 03 f0 00 00 00 00 00 00 00 00

DEF 99 06 00 00 00 00 00 00

CHG 99 06 00 ff 00 00 00 00

DEF 9a 0a 00 02 00 00 00 05 00 00 8c a0

CHG 9a 0a 00 03 ff ff ff ff 00 00 00 00

DEF 9c 0a 10 00 00 00 00 00 00 00 00 01

CHG 9c 0a 9d 0f ff ff ff ff ff ff ff ff

DEF dc 01 00 0c 01 01 00 18 00 18 00 00 00 00 00 00

CHG dc 01 00 0c 00 01 ff ff ff ff 00 00 00 00 00 00

DEF 80 06 00 80 0f 00 00 00

CHG 80 06 b7 c0 8f 00 00 00

READ CAPACITY DATA:

READ BUFFER

0 1 2 3 4 5 6 7 8 9 A B C D E F

ASCII

000000: 34 65 F8 6F 00 00 02 00 __ __ __ __ __ __ __ __

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Table 20 Mode Sense data default and changeable values for ST3300657FC drives

MODE DATA HEADER:

00 be 00 10 00 00 00 08

BLOCK DESCRIPTOR:

22 ec b2 5c 00 00 02 00

MODE PAGES:

DEF 81 0a c0 0b ff 00 00 00 05 00 ff ff

CHG 81 0a ff ff 00 00 00 00 ff 00 ff ff

DEF 82 0e 80 80 00 00 00 00 00 00 01 3a 00 00 00 00

CHG 82 0e ff ff 00 00 00 00 00 00 ff ff 00 00 00 00

DEF 83 16 bb d0 00 00 00 00 03 80 04 c4 02 00 00 01 00 c0 00 4c 40 00 00 00

CHG 83 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

DEF 84 16 01 8a 9a 04 00 00 00 00 00 00 00 00 00 00 00 00 00 00 3a a7 00 00

CHG 84 16 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

DEF 87 0a 00 0b ff 00 00 00 00 00 ff ff

CHG 87 0a 0f ff 00 00 00 00 00 00 ff ff

DEF 88 12 14 00 ff ff 00 00 ff ff ff ff 80 20 00 00 00 00 00 00

CHG 88 12 a5 00 00 00 ff ff ff ff 00 00 20 00 00 00 00 00 00 00

DEF 8a 0a 02 00 00 00 00 00 00 00 0c 80

CHG 8a 0a 03 f0 00 00 00 00 00 00 00 00

DEF 99 06 00 00 00 00 00 00

CHG 99 06 00 ff 00 00 00 00

DEF 9a 0a 00 02 00 00 00 05 00 00 8c a0

CHG 9a 0a 00 03 ff ff ff ff 00 00 00 00

DEF 9c 0a 10 00 00 00 00 00 00 00 00 01

CHG 9c 0a 9d 0f ff ff ff ff ff ff ff ff

DEF dc 01 00 0c 01 01 00 18 00 18 00 00 00 00 00 00

CHG dc 01 00 0c 00 01 ff ff ff ff 00 00 00 00 00 00

DEF 80 06 00 80 0f 00 00 00

CHG 80 06 b7 c0 8f 00 00 00

READ CAPACITY DATA:

READ BUFFER

0 1 2 3 4 5 6 7 8 9 A B C D E F

ASCII

000000: 22 EC B2 5B 00 00 02 00 __ __ __ __ __ __ __ __

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11.4 MISCELLANEOUS OPERATING FEATURES AND CONDITIONS

Table 21 lists various features and conditions. A “Y” in the support column indicates the feature or condition is supported. An

“N” in the support column indicates the feature or condition is not supported.

Table 21 Miscellaneous features

SUPPORTED

FEATURE OR CONDITION

FC-AL selective reset (LIP Reset)

Automatic contingent allegiance

Asynchronous event notification

Synchronized (locked) spindle operation

Segmented caching

Zero latency read

Queue tagging (up to 128 queue tags supported)

Deferred error handling

Parameter rounding (controlled by Round bit in Mode Select page 0)

Reporting actual retry count in Extended Sense bytes 15, 16, and 17

Adaptive caching

SMP = 1 in Mode Select command needed to save RPL and rotational offset bytes

Table 22 Miscellaneous status

SUPPORTED

STATUS

Good

Check condition

Condition met/good

Busy

Intermediate/good

Intermediate/condition met/good

Reservation conflict

Task set full

ACA active

ACA active, faulted initiator

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11.5 FC-AL PHYSICAL INTERFACE

Figure 12 shows the location of the J1 Fibre Channel single connection attachment (FC-SCA). Figure 14 provides the

dimensions of the FC-SCA connector.

Details of the physical, electrical, and logical characteristics are provided within this section. The operational aspects of

Seagate’s Fibre Channel drives are provided in the Fibre Channel Interface Manual..

J1 interface connector

Figure 12. Physical interface

11.5.1 Physical characteristics

This section defines physical interface connector.

11.5.1.1 Physical description

FIbre Channel drives may be connected in a loop together or with other compatible FC-AL devices. A maximum of 127

devices may have addresses; however, one of the addresses is reserved for a fabric port switch device. This means 126

addresses are available for FC-AL devices. More FC-AL compatible devices may physically reside on the loop, but they will

not be functional because they would not be able to obtain valid addresses.

Port bypass circuits (PBCs) allow devices to be inserted into unpopulated locations or removed from the loop with loop

operation recovery after a brief interruption. These PBCs are located external to the FC-AL device. Figure 13 shows the

relationship between the PBC and FC-AL device.

Port Bypass

Circuit

From Previous

Drive

To Next

Drive

Port Bypass

Circuit N 1

Port Bypass

Circuit N 1

MUX

Select

Serial

Out

Drive N 1

Drive N

Figure 13. Port bypass circuit physical interconnect

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11.5.2 Connector requirements

Table 23 Recommended mating SCA part numbers

PART DESCRIPTION

POSITIONS

PART NUMBER

787317-1

FEATURES

With polarization

AMP Vertical (SCA sequence)

Berg

71781

Methode

Molex

512-220-91-101N

717431040

The FC-AL SCA device connector is illustrated in Figure 14.

1.618 .003 in

(41.1 0.08 mm)

Pin 20

Pin 1

0.197 .003 in

(5.00 .08 mm)

2 places

Pin 40

.64 in

Pin 21

(16.24 mm)

1.28 in

(32.47 mm)

0.394 .004 in

(10.0 0.10 mm)

1.618 .003 in

(41.10 0.08 mm)

0.226 in

(6.50 mm)

0.039 in

min.

(0.75 mm)

0.264 .007 in

.010 in

1.492 .009 in

(37.90 0.24 mm)

0.024 in

(0.60 mm)

min.

(6.71 0.18 mm)

( 0.25 mm)

Mating end

Housing

0.079 .010 in

(2.00 .25 mm)

(initial point

of contact)

.05 in

(1.27 mm)

Contact (typ.)

.025 in (0.635 mm)

typ.

0.060 .010 in

(1.52 0.25 mm)

0.106 .010 in

(2.70 0.25 mm)

0.051 .006 in

(1.30 0.16 mm)

2 places

Figure 14. FC-AL SCA device connector dimensions

11.5.3 Electrical description

Fibre Channel drives use the FC-SCA connector for:

• DC power

• FC-AL interface

• Drive select (device identification)

• Option selection

• Enclosure Services interface

This 40-pin connector is designed to plug directly into a backpanel. External cables are not required.

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11.5.4 Pin descriptions

This section provides a pin-out of the FC-SCA and a description of the functions provided by the pins.

Table 24 FC-SCA pin descriptions

SIGNAL NAME

SIGNAL TYPE

SIGNAL NAME

SIGNAL TYPE

-EN bypass port A

Low Voltage TTL out-

put

12 Volts charge

12 Volts

Ground

12 Volts

Ground

12 Volts

24*

25*

+Port A_in

-Port A_in

Ground

FC Diff. input pair

FC Diff. output pair

-Parallel ESI

[1]

Ground

Active LED out

Reserved

Open collector out

27*

28*

+Port B_in

-Port B_in

Ground

[2]

Start_1

TTL input

[2]

Start_2

30*

+Port A_out

-EN bypass port B

SEL_6

Low Voltage TTL out-

put

31*

-Port A_out

Ground

TTL input/output

TTL input

SEL_5

33*

34*

+Port B_out

-Port B_out

Ground

FC Diff. output pair

SEL_4

SEL_3

TTL input/output

Open collector out

TTL input

Fault LED out

SEL_2

TTL input/output

TTL input

[

DEV_CTRL_CODE_2

SEL_1

DEV_CTRL_CODE_1

TTL input

SEL_0

[

5 Volts

DEV_CTRL_CODE_0

5 Volts charge

*Short pins in mating backpanel connector.

[1] This pin may be connected to external logic to detect the presence of the drive. The drive connects this pin to the com-

mon ground.

[2] Pins 9, 10, 17, 18, and 39 are option select pins and are tied high by the drive circuitry. The preferred electrical connec-

tion at the backplane is either open or grounded (open for the ‘1’ setting, grounded for the ‘0’ setting). Alternatively,

these pins may be driven by a 3.3V logic device, pulled up to 3.3V through a pull-up resistor (recommended size of 10k

ohm), or grounded through some other means.

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11.5.5 FC-AL transmitters and receivers

A typical FC-AL differential copper transmitter and receiver pair is shown in Figure 15. The receiver is required to provide the

AC coupling to eliminate ground shift noise.

.01

Differential

Transmitter

100

Receiver

100

Transfer Medium

Figure 15. FC-AL transmitters and receivers

11.5.6 Power

Power is supplied through the FC-SCA with support for +5 volts and +12 volts. All of the voltage pins in the drive connector

are the same length.

Four 12 volt pins provide +12 volt power to the drive. The current return for the +12 volt power supply is through the common

ground pins. The supply current and return current must be distributed as evenly as possible among the pins. The maximum

current typically occurs while the drive motor is starting.

Three 5 volt pins provide logic power to the drive. The current return for the +5 volt power supply is through the common

ground pins. Distribute supply and return current as evenly as possible among the voltage and ground pins.

The mating connector pins use shorter contacts to achieve power surge reductions and to aid in “hot plugging” the drives.

There are longer voltage contacts in the connector to enable the drive filter capacitors to charge. Current to the drive through

the long charge pins is limited by the system in which the drive operates. Three of the +12 volt pins are shorter to allow

capacitive pre-charging through the longer +12 volt charge pin. Two of the +5 volt pins are shorter to allow capacitive

precharging through the longer +5 volt charge pin.

11.5.7 Fault LED Out

The Fault LED Out signal is driven by the drive when:

• the drive detects failure of both ports

• the drive detects an internal failure

• the drive receives the appropriate fault LED command from the host

The Fault LED Out signal is designed to pull down the cathode of an LED. The anode is attached to the proper +5 volt supply

through an appropriate current-limiting resistor. The LED and the current-limiting resistor are external to the drive.

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11.5.8 Active LED Out

The Active LED Out signal is driven by the drive as indicated in Table 25.

Table 25 Active LED Out conditions

NORMAL COMMAND ACTIVITY

Spun down and no activity

LED STATUS

Slow blink (20% on and 80% off a 2 sec cycle)

Spun down and activity (command executing)

Spun up and no activity

Spun up and activity (command executing)

Spinning up or down

Off

Blinks steadily (50% on and 50% off)

Toggles on/off

Format in progress, each cylinder change

The Active LED Out signal is designed to pull down the cathode of an LED. The anode is attached to the proper +5 volt

supply through an appropriate current limiting resistor. The LED and the current limiting resistor are external to the drive.

11.5.9 Enable port bypass signals

The – Enable Bypass Port A (– EN BYP Port A) and – Enable Bypass Port B (– EN BYP Port B) signals control the port

bypass circuits (PBC) located external to the disk drive. The PBC allows a loop to remain functional in the event of a drive

failure or removal. When these signals are active, low, the PBC bypasses the drive on the associated port. When an Enable

Bypass signal is active, the corresponding Port Bypass LED signal in connector J1 is driven low by the disk drive. A pull

down resistor, 1K, located with the PBC should be used to insure the bypass is enabled if the disk drive is not installed.

The Enable Bypass signal is active under failing conditions within the drive, on detection of the Loop Port Bypass primitive

sequence, or on removal of the drive. In the bypass state the drive continues to receive on the inbound fibre. Enable Bypass

may be deactivated by detection of a Loop Port Enable primitive sequence if the drive has completed self-test and a

hardware failure is not present.

Failure modes detected by the disk drive that will enable bypass include:

• Transmitter/receiver wrap test failure

• Loss of receive clock

• Loss of transmission clock

• Drive interface hardware error

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11.5.10 Motor start controls

The drive’s motor is started according to the Start_1 and Start_2 signals described in Table 26. The state of these signals can

be wired into the backplane socket or driven by logic on the backplane.

Table 26 Motor start control signals

CASE

START_2

Low

START_1

Low

MOTOR SPIN FUNCTION

Motor spins up at DC power on.

High

Low

Motor spins up only when SCSI Start command is received.

Low

High

Motor spins up after a delay of 12 seconds times the modulo 8 value

of the numeric SEL ID of the drive from DC power on.

High

The drive will not spin up.

11.5.11 SEL_6 through SEL_0 ID lines

The SEL_6 through SEL_0 ID lines determine drive address, and, optionally, for an Enclosure Services Interface. When the

Parallel ESI line is high, the enclosure backpanel must provide address information on the SEL line. Refer to Table 27 for a

mapping of SEL to FC-AL physical addresses (AL_PA). You can think of the SEL lines as the equivalent of a backpanel logic

plug. The drives does not provide pull up resistors on these lines. The backpanel is required to provide high and low inputs to

the SEL_ID lines per the specifications in table 29 on page 63.

Note. Table 27 gives AL_PA values for each SEL value. The first entry in the table is SEL_ID 00. The last entry is

SEL_ID 7D. SEL_ID 7E is AL_PA 00 which is not valid for an NL_Port, so is not included in the table. Also,

SEL_ID 7Fh does map to a valid AL_PA; however, this value signals the drive that physical addresses are not

being assigned using the SEL lines and that a “soft” address will be determined by FC-AL loop initialization.

When the Parallel ESI line is low, the enclosure backpanel logic switches to ESI mode if supported. There are two modes of

ESI, seven bits of enclosure status and a bidirectional mode. ESI support and the mode are determined by the drive using a

discovery process. Refer to the Fibre Channel Interface Manual for a description of ESI operation.

11.5.11.1Parallel Enclosure Services Interface (ESI)

The parallel ESI line is an output from the drive. This line provides the enclosure with an indication of the present function of

the SEL lines. A high level, the default state, indicates the drive requires address information on the SEL lines. A low level

indicates the drive is attempting an ESI transfer. The enclosure may not support ESI on any or all drive locations. It may only

support the address function. Support of ESI is discovered by the drive. Refer to the Fibre Channel Interface Manual for a

description of ESI operations.

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Table 27 AL_PA values

AL_PA

(hex)

SEL ID

(hex)

Setting

(dec)

AL_PA

(hex)

SEL ID

(hex)

Setting

(dec)

AL_PA

(hex)

SEL ID

(hex)

Setting

(dec)

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

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11.5.12 Device control codes

The drive inputs a Device Control Code on the DEV_CTRL_CODE lines at power up to determine the link rate on the Fibre

Channel ports. Both ports run at the same rate. If the backpanel does not connect to these lines, the drive has 10K ohm pull

up resistors that default the device control code to 7 (1.0625 GHz). Table lists the supported codes.

Table 28 Device control code values

2 (PIN 17)

1 (PIN 18)

0 (PIN 39)

DEFINITION

Reserved for power failure warning.

Reserved for auto negotiation of link rate.

Reserved.

4.250 GHz operation on both ports.

2.125 GHz operation on both ports.

1.0625 GHz operation on both ports.

11.6 SIGNAL CHARACTERISTICS

This section describes the electrical signal characteristics of the drive’s input and output signals. See Table 24 on page 58

for signal type and signal name information.

11.6.1 TTL input characteristics

Table 29 provides the TTL characteristics.

Table 29 TTL characteristics

STATE

VOLTAGE

CURRENT

Input high

1.9 < V_IH< 5.5V

-0.5V < V_IL< 0.9V

2.4 < V_OH< 5.25V

I_IH= ±500nA max.

I_OL= ±500nA max.

I_OH< -3mA

Input low

Output high (-EN Bypass A, B)

Output low (-EN Bypass A, B)

Output high (-Parallel ESI)

_OL< 0.5V

I_OL< 3mA

2.4 < V_OH< 0.9 V_CC

V_OH> 0.9V_CC

I_OH< -2.4mA

I_OH< -500μA

Output low (-Parallel ESI)

0 < V_OL< .45V

I_OL< 2.4mA

I_OH< -1.6mA

Output high (all other outputs)

2.4 < V_OH< 0.9 V_CC

V_OH> 0.9V_CC

I_OH< -500μA

Output low (all other outputs)

0 < V_OL< .45V

I_OL< 1.6mA

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11.6.2 LED driver signals

Fault and Active LED signals are located in the FC-SCA connector (J1). See Table 30 for the output characteristics of the

LED drive signals.

Table 30 LED drive signal

STATE

CURRENT DRIVE AVAILABLE

OUTPUT VOLTAGE

LED off, high

LED on, low

0 < I_OH< 100μA

_OL< -30 mA

0 < V_OL< 0.8V

11.6.3 FC Differential output

The serial output signal voltage characteristics are provided in Table 31. The outputs are not AC coupled in order to deliver

maximum signal without rise and fall time degradation. You must AC couple the receiver to isolate potentially different DC

characteristics of the outputs and the receiver.

Table 31 FC Differential output characteristics

DESCRIPTION

PARAMETER

NOTES

Serial output voltage swing

600 < V_out< 1300 mV

Centered at 1.32V

Figure 16 provides the data output valid eye diagram relative to the bit cell time.

Bit Time

XMIT Eye

Figure 16. Transmit eye diagram

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11.6.4 FC Differential input

The serial input signal voltage characteristics are provided in Table 32.

Table 32 FC Differential input characteristics

DESCRIPTION

PARAMETER

NOTES

Serial input voltage swing

200 < V_in< 1.300 mV

AC coupled

Figure 17 provides the data valid eye diagram for typical and minimum requirements to recover data at the specified

interface error rate. The inputs are AC coupled on the drive.

941 ps

659 ps

376 ps

Typical

Minimum

Figure 17. Receive eye diagram

Table 33 Eye diagram data values

LINK RATE

1 GHZ

2 GHZ

4 GHZ

Bit time

941 ps

470 ps

235 ps

XMIT eye

RCV eye

725 ps min.

659 ps

315 ps min.

305 ps

158 /113

Typical

145 ps

113 ps

Minimum

395 ps

226 ps

Short Ideal load.

End of compliance channel.

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INDEX

BB-Credit 41, 44

BMS 36

Numerics

12 volt

buffer

pins 59

data 7

space 12

3rd party reserve command 49

5 volt pins 59

busy status 55

bypass circuit 15

Byte check command 47

Abort Sequence (ABTS) 39

abort task set function 40

AC coupling 59

cache operation 12

cache segments 12

AC power requirements 20

ACA active status 55

ACA active, faulted initiator status 55

Accept (ACC) 39

Caching parameters page (08h) command 46

caching write data 13

Canadian Department of Communications 3

capacity

unformatted 10

capacity, drive, programmable 9

CBC 32

acoustics 29

active LED Out signal 60

Actual retry count bytes command 46

actuator

assembly design 6

CC 42, 43

adaptive caching 55

Address Discovery (ADISC) 39

addresses 56

CF 41, 44

Change definition command 48

character sync 15

Admin SP 32

charge pins 59

AES-128 data encryption 32

AFR 14

air cleanliness 29

check condition status 55

Cipher Block Chaining 32

Class 3 parameters 41, 44

class B limit 3

air flow 37

illustrated 37

Class valid 41, 44

clear ACA function 40

clear task set function 40

commands supported 46

Common features 41, 44

Company ID 42, 43

Compare command 47

Concurrent sequences 41

condensation 26

Alternate credit model 41, 44

altitude 26

ambient 26

Annualized Failure Rates (AFR) 15

ANSI documents

fibre channel 5

SCSI 5

arbitrated loop physical address (AL_PA) 37

arbitration 37

condition met/good status 55

connector

asynchronous event notification 55

audible noise 3

illustrated 57

requirements 57

auto negotiation of link rate 63

auto write and read reallocation

programmable 7

automatic contingent allegiance 55

average idle current 20, 21

average rotational latency 10

continuous vibration 29

Continuously increasing offset 41, 44

control code values 63

Control mode page (0Ah) command 46

cooling 37

Copy and verify command 47

Copy command 46

CRC 15

error 14

Cryptographic erase 33

CS 41

Current profiles 22

customer service 19

Background Media Scan 36

backpanel 57

backplane 61

Band 0 33

BandMasterX 32

basic link service frames 39

Basic_Accept (BA_ACC) 39

Basic_Reject (BA_RJT) 39

BB 41, 44

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signal characteristics 63

specifications 20

DAR 36

electromagnetic compatibility 3

electromagnetic susceptibility 29

EMI requirements 3

enable bypass

Data Bands 33

data bands 32

Data encryption 32

Data Encryption Key 32

data heads

port A 60

port B 60

read/write 10

signal 60

data rate

state 15

internal 10

Enclosure Services interface 57

Enclosure services page command 47

encryption engine 32

encryption key 33

environmental

data transfer rate 11

data valid eye 65

Date code page command 46

DC power 57

requirements 20

limits 26

decrypt 32

requirements 14

environmental control 29

EraseMaster 32

default MSID password 32

defect and error management 34

defects 34

Deferred Auto-Reallocation 36

deferred error handling 55

DEK 32

error

detection mechanisms, FC 15

management 34

rates 14

description 6

error correction code

96-bit Reed-Solomon 7

Error recovery page (01h) command 46

errors 34

extended link service

frames 39

DEV_CTRL_CODE 63

Device Behavior page command 46

device control code values 63

Device Identification page command 46

device selection IDs 37

devices 37

reply frames 39

dimensions 30

Extended sense command 46

Extent reservation command 49

Disable page out command 47

Disconnect/reconnect control (page 02h) command

disk rotation speed 10

Download microcode and save modes (5) 48

Download microcode mode (4) 48

Download microcode with offsets and save mode (7)

Download microcode with offsets mode (6) 48

drive 29

drive capacity

programmable 9

drive characteristics 10

drive ID 37

drive ID/option select headers 37

Drive Locking 33

drive mounting 30, 38

drive orientation 37

drive select 57

driver signals 64

drivers and receivers 7

dual port support 45

fabric 44

Fabric Address Notification (FAN) 39

Fabric Login (FLOGI) 39

FAN 44

fault LED out signal 59

FC differential input 65

FC-AL

document 5

interface 37, 57

options supported 45

physical interface 56

SCA device connector, illustrated 57

selective reset 55

FCC rules and regulations 3

FCP

for SCSI, document 5

response codes 40

task management functions 40

FC-PH document 5

FDE features 7

features 7

electrical

interface 39

description of connector 57

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Federal Information Processing Standard 31

Fibre Channel documents 5

Fibre Channel Interface Control page (19h) 46

Fibre Channel Interface Manual 2, 3

Fibre Channel Services 39

Field pointer bytes command 46

FIPS 31

inquiry data 50

installation 37

interface 37

commands supported 46

description 56

error rate 14

errors 14

firmware 7

illustrated 56

corruption 49

physical 56

Firmware download option command 48

firmware download port 33

Firmware numbers page command 46

flawed sector reallocation 7

FLOGI

received on Port A 43

received on Port B 43

Force unit access command 47

form factor 7

format 37

requirements 39

intermediate/condition met/good status 55

intermediate/good status 55

Intermix 41, 44

internal data rate 10

internal defects/errors 34

internal drive characteristics 10

IRAW 36

J1 connector 37

Jumper settings page command 46

jumpers 37

Format command execution time 11

Format page (03h) command 46

Format unit command 46

FS 41, 42, 44

function

latency

complete, code 00 40

not supported, code 05 40

reject, code 04 40

average rotational 10, 11

LBdata 48

LED driver signals 64

Link Service Reject (LS_RJT) 39

link services supported 39

Locking SP 32

Global Data Band 33

Good status 55

gradient 26

LockOnReset 33

Lock-unlock-cache command 47

Log select command 48

Log sense command 48

logic power 59

ground shift noise 59

grounding 38

hard assigned arbitrated loop physical address logical block address 12

(AL_PA) 37

HDA 38

heads

read/write data 10

heat removal 37

host equipment 38

hot plugging the drive 15

humidity 26

logical block reallocation scheme 7

logical block size 7, 11

logical segments 12

Logout (LOGO) 39

loop 56, 60

disruption 15

initialization 37

loop position

humidity limits 26

FC-AL options 45

loop position report

FC-AL options 45

LS_RJT 41, 44

LSI circuitry 8

IC 41

ID and configuration options 7

Idle Read After Write 36

Implemented operating def. page command 46

Information exceptions control page (1Ch) command maintenance 14

Makers Secure ID 32

Initiator control 41

Inquiry command 46

maximum delayed motor start 20, 21

maximum start current 20, 21

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mean time between failure (MTBF) 15

media description 8

Media Pre-Scan 36

miscellaneous feature support

Adaptive caching 55

Asynchronous event notification 55

Automatic contingent allegiance 55

Deferred error handling 55

FC-AL selective reset 55

Parameter rounding 55

Queue tagging 55

Reporting actual retry count 55

Segmented caching 55

SMP = 1 in Mode Select command 55

Synchronized (locked) spindle operation 55

Zero latency read 55

miscellaneous status support

ACA active 55

noise immunity 21

non-operating 26, 27, 29

temperature 26

non-operating vibration 29

office environment 29

old port state

FC-AL options 45

OPEN Full Duplex

FC-AL options 45

OPEN half duplex

FC-AL options 45

Open sequences per exchange 41

operating 26, 27, 29

option configurations 37

option selection 57

options 9, 45

orientation 27

OS 41

out-of-plane distortion 38

ACA active, faulted initiator 55

Busy 55

Check condition 55

Condition met/good 55

Good 55

P_LOGI

Intermediate/condition met/good 55

Intermediate/good 55

Reservation conflict 55

Task set full 55

received on Port A 42

received on Port B 42

package size 27

package test specification 5

packaged 27

parameter rounding 55

pass-through state 15

password 32

miscorrected media data 14

Mode select

(10) command 49

command 46

Mode sense

passwords 32

PBC 56, 60

PBdata 48

(10) command 49

command 46

data, table 50, 52

PCBA 38

monitoring state 15

motor start

controls 61

option 11

mounting 38

holes 38

orientations 37

mounting configuration 30

mounting configuration dimensions 30

MSID 32

peak bits per inch 10

peak operating current 20, 21

peak-to-peak measurements 21

performance characteristics

detailed 10

general 11

performance degradation 27

performance highlights 8

physical damage 29

physical interface 56

description 56

MTBF 15

physical specifications 20

PI 42, 43

N_Port Login (PLOGI) 39

payload 41

payload values 42

NN 41, 44

Node Name 44

Node name 41

noise

pin descriptions 58

PN 41, 44

port bypass circuit 15, 56, 60

Port DISCovery 41

Port Discovery (PDISC) 39

port identifier field 42, 43

port login 41

audible 3

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accept 42

Port Name 44

Port name (initiator’s) 41

power 59

recommended mounting 28

Recoverable Errors 14

recovered media data 14

reference

dissipation 24

documents 5

requirements, AC 20

requirements, DC 20

sequencing 22

Regenerate command 49

Relative address command 47

relative humidity 26

Release command 46

Released (10) command 49

reliability 8

Power control page (1Ah) command 46

power distribution 3

power failure warning 63

PowerCycle 33

Prefetch command 47

prefetch/multi-segmented cache control 12

preventive maintenance 14

private loop

FC-AL options 45

Proc Assc 41

Process Accept (ACC) 43

Process Login (PRLI) 39, 42

Process Login Accept (ACC) payload 43

process login payload data 42

Process Logout (PRLO) 39

programmable drive capacity 9

protection of data at rest 32

public loop

specifications 14

reliability and service 15

repair and return information 19

reporting actual retry count 55

Request sense command 46

reservation conflict status 55

Reserve command 46

Reserved (10) command 49

resonance 27

return information 19

Rezero unit command 46

Rigid disk drive geometry page

command 46

RNG 32

FC-AL options 45

rotation speed 10

pull down resistor 60

running disparity 15

queue tagging 55

safety 3

SCA part numbers 57

SCSI interface

commands supported 46

Seagate Technology Support Services 1

Search data

equal command 47

high command 47

low command 47

Secure ID 32

security partitions 32

Security Protocol In 32

Security Protocol Out 32

Seek command 46

seek error

radio interference regulations 3

Random number generator 32

Random relative offset 41, 44

RCD bit 12

Read buffer command 48

Read capacity command 47

Read combined header and data mode (0) 48

Read command 46

Read data mode (2) 48

Read defect data command 47

Read descriptor mode (3) 48

read error rates 14, 34

Read extended command 47

Read Link Status (RLS) 39

Read long command 48

read/write data heads 10

Reassign blocks command 46

Receive buffer field size 41, 44

receive buffer field size 42

Receive diagnostic results command 47

receive eye

defined 14

rate 14

Seek extended command 47

seek performance characteristics 10

seek time

average typical 10

full stroke typical 10

single track typical 10

segmented caching 55

SEL ID 37

diagram 65

receivers 59

lines 61

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standard feature 7

regulation 3

Self-Encrypting Drive (SED) Users Guide 2

self-encrypting drives 32