Seagate ST360020ACE User Manual

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U Series CE Family  
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ST380020ACE, ST360020ACE  
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ST340810ACE, ST320410ACE  
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Ultra ATA Interface Drives  
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Product Manual  
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U Series CE Family  
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ST380020ACE, ST360020ACE  
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
ST340810ACE, ST320410ACE  
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Ultra ATA Interface Drives  
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Product Manual  
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2001 Seagate Technology LLC All rights reserved  
Publication Number: 100140718, Rev. A, July 2001  
Seagate, Seagate Technology and the Seagate logo are registered  
trademarks of Seagate Technology LLC. SeaShield, SeaShell and U  
Series CE are either registered trademarks or trademarks of Seagate  
Technology LLC. Other product names are registered trademarks or  
trademarks of their owners.  
Seagate reserves the right to change, without notice, product offerings  
or specifications. No part of this publication may be reproduced in any  
form without written permission from Seagate Technology LLC.  
U Series CE Family Product Manual, Rev. A  
iii  
Contents  
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
Specification summary table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
1.0 Drive specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5  
1.1 Formatted capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5  
1.1.1 Default logical geometry . . . . . . . . . . . . . . . . . . . . . . . . . 5  
1.2 Physical organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6  
1.3 Recording and interface technology . . . . . . . . . . . . . . . . . . . . 6  
1.4 Physical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6  
1.5 Seek time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7  
1.6 Start/stop times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7  
1.7 Power specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8  
1.7.1 Power consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8  
1.7.2 Conducted noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10  
1.7.3 Voltage tolerance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10  
1.7.4 Power-management modes . . . . . . . . . . . . . . . . . . . . . 10  
1.8 Environmental tolerances . . . . . . . . . . . . . . . . . . . . . . . . . . . 11  
1.8.1 Ambient temperature . . . . . . . . . . . . . . . . . . . . . . . . . . 11  
1.8.2 Temperature gradient . . . . . . . . . . . . . . . . . . . . . . . . . . 11  
1.8.3 Humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12  
1.8.4 Altitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12  
1.8.5 Shock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12  
1.8.6 Vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12  
1.9 Drive acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13  
1.10 Electromagnetic immunity . . . . . . . . . . . . . . . . . . . . . . . . . . 14  
1.11 Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14  
1.12 Agency certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14  
1.12.1 Safety certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14  
1.12.2 Electromagnetic compatibility . . . . . . . . . . . . . . . . . . . 15  
iv  
U Series CE Family Product Manual, Rev. A  
1.12.3 FCC verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16  
2.0 Configuring and mounting the drive . . . . . . . . . . . . . . . . . . . 17  
2.1 Handling and static-discharge precautions . . . . . . . . . . . . . . 17  
2.2 Jumper settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18  
2.2.1 Master/slave configuration . . . . . . . . . . . . . . . . . . . . . . 18  
2.2.2 Cable-select option . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19  
2.2.3 Alternate capacity jumper . . . . . . . . . . . . . . . . . . . . . . . 19  
2.2.4 Ultra ATA/100 cable . . . . . . . . . . . . . . . . . . . . . . . . . . . 19  
2.1 Drive mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20  
3.0 ATA interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21  
3.1 ATA interface signals and connector pins . . . . . . . . . . . . . . 21  
3.1.1 Supported ATA commands . . . . . . . . . . . . . . . . . . . . . . 23  
3.1.2 Identify Drive command . . . . . . . . . . . . . . . . . . . . . . . . 24  
3.1.3 Set Features command . . . . . . . . . . . . . . . . . . . . . . . . . 29  
3.1.4 S.M.A.R.T. commands . . . . . . . . . . . . . . . . . . . . . . . . . 31  
U Series CE Family Product Manual, Rev. A  
v
Figures  
Figure 1. Typical startup and operation current profile . . . . . . . . . . . . 9  
Figure 2. Master/slave jumper settings . . . . . . . . . . . . . . . . . . . . . . . 18  
Figure 3. Mounting dimensions—top, side and end view . . . . . . . . . 20  
Figure 4. I/O pins and supported ATA signals. . . . . . . . . . . . . . . . . . 22  
vi  
U Series CE Family Product Manual, Rev. A  
U Series CE Family Product Manual, Rev. A  
1
Introduction  
This manual describes the functional, mechanical and interface specifi-  
cations for the ST380020ACE, ST360020ACE, ST340810ACE and the  
ST320410ACE. These drives provide the following key features:  
8.9 msec seek time, 5,400-RPM and 2-Mbyte buffer combine for  
excellent desktop performance  
Low power consumption  
High instantaneous (burst) data-transfer rates (up to 100 Mbytes per  
second) using Ultra DMA mode 5  
Giant magnetoresistive (GMR) recording heads and GPRML technol-  
ogy, which provide the drives with increased areal density  
State-of-the-art cache and on-the-fly error-correction algorithms  
Full-track multiple-sector transfer capability without local processor  
intervention  
Quiet operation  
350 Gs nonoperating shock  
The innovative, shock-absorbing SeaShield® cover protects the drive  
against electrostatic discharge (ESD) and other handling damage. It  
also includes installation instructions and jumper settings.  
SeaTools diagnostic software performs a drive self-test that eliminates  
unnecessary drive returns.  
Support for S.M.A.R.T. drive monitoring and reporting  
Support for drive self-test (DST) with S.M.A.R.T. Execute Off-line  
Immediate  
Support for Read Multiple and Write Multiple commands  
Support for autodetection of master/slave drives that use cable select  
(CSEL)  
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U Series CE Family Product Manual, Rev. A  
Specification summary table  
The specifications listed in this table are for quick reference. For details  
on specification measurement or definition, see the appropriate section  
of this manual.  
Drive Specification ST380020ACE ST360020ACE ST340810ACE ST320410ACE  
Formatted Gbytes  
(×10 bytes)  
80  
60  
40  
20  
6
Guaranteed sectors  
Bytes per sector  
156,301,488  
117,231,408  
78,165,360  
39,102,336  
512  
63  
Default sectors per  
track  
Default read/write  
heads  
16  
Default cylinders  
16,383  
Physical read/write  
heads  
4
2
3
2
2
1
1
1
Discs  
Recording density  
BPI (bits/inch max)  
562, 436  
58,000  
Track density TPI  
(tracks/inch)  
Areal density (Mbits/  
2
inch max)  
32,622  
5,400  
Spindle speed (RPM)  
Internal data-transfer  
rate (Mbits/sec max)  
436  
100  
I/O data-transfer rate  
(Mbytes/sec max)  
ATA data-transfer  
modes  
supported  
PIO modes 0–4  
Multiword DMA modes 0–2  
Ultra DMA modes 0–5  
Cache buffer (Mbytes)  
Height (mm max)  
Width (mm max)  
Length (mm max)  
Weight (typical)  
2
26.1  
101.8  
147.0  
680 grams (1.5 lb)  
U Series CE Family Product Manual, Rev. A  
3
Drive Specification ST380020ACE ST360020ACE ST340810ACE ST320410ACE  
Track-to-track seek  
time (msec typical)  
1.2 (read) 2.0 (write)  
Average seek time  
(msec typical)  
8.9  
9.9  
Average seek read  
(msec typical)  
Average seek write  
(msec typical)  
10.9  
Full-stroke seek time  
(msec typical)  
22.0 (read) 24.0 (write)  
5.55 msec  
6.5 sec  
Average latency  
(msec)  
Power-on to ready  
(sec typical)  
Standby to ready  
(sec typical)  
6.5 sec  
Spindown  
(sec typical)  
10 sec  
Startup current  
(typical)  
2.5 amps  
7.5 watts  
7.5 watts  
5.0 watts  
Seek power (typical)  
Read/Write power  
Idle mode (typical)  
Standby mode  
(typical)  
1.2 watts  
0.9 watts  
Sleep mode (typical)  
Voltage tolerance  
(including noise)  
5V ± 5%, 12V ± 10%  
Ambient temperature  
0° to 60°C (op.), –40° to 70°C (nonop.)  
Temperature gradient  
(°C per hour max)  
20°C  
Relative humidity  
(op. and nonop.)  
5% to 90% (op.)  
5% to 95% (nonop.)  
Relative humidity  
gradient  
30% per hour max  
Wet bulb temperature  
(°C max)  
29.4 (op.), 40.0 (nonop.)  
Altitude, operating  
–60.96 m to 3,048 m (–200 ft to 10,000+ ft)  
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U Series CE Family Product Manual, Rev. A  
Drive Specification ST380020ACE ST360020ACE ST340810ACE ST320410ACE  
Altitude (meters be-  
low mean sea level,  
max)  
–121.92 m to 12,192 m (–400 ft to 40,000+ ft)  
63 Gs  
Shock, operating  
(Gs max at 2 msec)  
Shock, nonoperating  
(Gs max at 1 and 2  
msec)  
350 Gs  
Vibration, operating  
0.5 Gs (0 to peak, 22–350 Hz)  
Vibration,  
nonoperating  
5 Gs (0 to peak, 22–350 Hz)  
Drive acoustics  
Sound power in bels  
2.7 (typical), 3.0 (max)  
2.9 (typical), 3.2 (max)  
Idle mode  
Performance Seek  
Nonrecoverable  
read errors  
13  
1 per 10 bits read  
Mean time between  
failures (power-on  
hours)  
600,000  
Contact start-stop cy-  
cles (25°C, 40%  
relative humidity)  
50,000  
Yes  
SeaShield  
U Series CE Family Product Manual, Rev. A  
5
1.0 Drive specifications  
Unless otherwise noted, all specifications are measured under ambient  
conditions, at 25°C, and nominal power. For convenience, the phrases  
the drive and this drive are used throughout this manual to indicate the  
ST380020ACE, ST360010ACE, ST340810ACE and the  
ST320410ACE.  
1.1 Formatted capacity  
Drive Model  
Formatted Gbytes  
Guaranteed  
sectors  
Bytes per  
sector  
ST380020ACE  
ST360020ACE  
ST340810ACE  
ST320410ACE  
80  
60  
40  
20  
156,301,488  
117,231,408  
78,165,360  
39,102,336  
512  
512  
512  
512  
1.1.1 Default logical geometry  
CHS Mode  
Cylinders  
Read/Write  
heads  
Sectors per  
track  
ST380020ACE  
ST360020ACE  
ST340810ACE  
ST320410ACE  
16,383  
16,383  
16,383  
16,383  
16  
16  
16  
16  
63  
63  
63  
63  
LBA Mode  
When addressing drive in LBA mode, all blocks (sectors) are consecu-  
tively numbered from 0 to n–1, where n is the number of guaranteed  
sectors as defined above.  
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U Series CE Family Product Manual, Rev. A  
1.2 Physical organization  
Drive Model  
ST380020ACE  
ST360020ACE  
ST340810ACE  
ST320410ACE  
Read/Write heads (GMR)  
Number of discs  
4
3
2
1
2
2
1
1
1.3 Recording and interface technology  
Interface  
ATA  
Recording method  
96/102 GPRML  
562,436  
58,000  
Recording density BPI (bits/inch)  
Track density TPI (tracks/inch)  
Areal density (Mbits/inch2 max)  
Spindle speed (RPM) (± 0.2%)  
32,622  
5,400  
Internal data-transfer rate  
(Mbits/sec max)  
436  
I/O data-transfer rate  
(Mbytes/sec max)  
16.6 (PIO mode 4)  
100 (Ultra DMA mode 5)  
Interleave  
1:1  
2
Cache buffer (Mbytes)  
1.4 Physical characteristics  
Drive Specification  
ST380020ACE, ST360020ACE  
ST340810ACE, ST320410ACE  
Maximum height  
Maximum width  
(mm)  
(inches)  
26.1  
1.028  
(mm)  
(inches)  
101.8  
4.020  
Maximum length (mm)  
(inches)  
147.0  
5.78  
Typical weight  
(grams)  
(pounds)  
680  
1.5  
U Series CE Family Product Manual, Rev. A  
7
1.5 Seek time  
Seek measurements are taken with nominal power at 25°C ambient  
temperature. All times are measured using drive diagnostics. The spec-  
ifications in the table below are defined as follows:  
Track-to-track seek time is an average of all possible single-track  
seeks in both directions.  
Average seek time is a true statistical random average of at least 5,000  
measurements of seeks between random tracks, less overhead.  
Full-stroke seek time is one-half the time needed to seek from the first  
data cylinder to the maximum data cylinder and back to the first data  
cylinder. The full-stroke typical value is determined by averaging 100  
full-stroke seeks in both directions.  
Typical seek times (msec)  
Track-to-track  
Read  
1.2  
Write  
2.0  
Average  
9.9  
10.9  
24.0  
Full-stroke  
22.0  
Average latency: 5.55 msec  
Note. These drives are designed to consistently meet the seek times rep-  
resented in this manual. Physical seeks, regardless of mode (such as  
track-to-track and average) are expected to meet or exceed the noted  
values. However, due to the manner in which these drives are format-  
ted, benchmark tests that include command overhead or measure  
logical seeks may produce results that vary from these specifications.  
1.6 Start/stop times  
Power-on to Ready (sec)  
Standby to Ready (sec)  
Ready to spindle stop (sec)  
6.5 (typical)  
6.5 (typical)  
10 (typical)  
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U Series CE Family Product Manual, Rev. A  
1.7 Power specifications  
The drive receives DC power (+5V or +12V) through a four-pin standard  
drive power connector.  
1.7.1 Power consumption  
Power requirements for the drives are listed in the table on page 9.  
Typical power measurements are based on an average of drives tested,  
under nominal conditions, using 5.0V input voltage at 25°C ambient  
temperature.  
Spinup power  
Spinup power is measured from the time of power-on to the time that  
the drive spindle reaches operating speed.  
Seek Mode  
During seek mode, the read/write actuator arm moves toward a  
specific position on the disc surface and does not execute a read or  
write operation. Servo electronics are active. Seek mode power rep-  
resents the worst-case power consumption, using only random seeks  
with read or write latency time. This mode is not typical and is provided  
for worst-case information.  
Read/Write power and current  
Read/write power is measured with the heads on track, based on a  
16-sector write followed by a 32-msec delay, then a 16-sector read  
followed by a 32-msec delay.  
Operating power and current  
Operating power is measured using 40 percent random seeks, 40  
percent read/write mode (1 write for each 10 reads) and 20 percent  
drive inactive.  
Idle mode power  
Idle mode power is measured with the drive up to speed, with servo  
electronics active and with the heads in a random track location.  
Standby mode  
During Standby mode, the drive accepts commands, but the drive is  
not spinning, and the servo and read/write electronics are in power-  
down mode.  
U Series CE Family Product Manual, Rev. A  
9
Typical Amps Means  
Power Mode  
Spinup  
Typical Watts  
5V  
12V  
0.75  
2.5  
Seek (Random,  
no read/write)  
Performance mode  
7.5  
0.83  
0.279  
Operating (read/write)  
Performance mode  
7.5  
5.0  
1.2  
0.9  
0.94  
0.63  
0.2  
0.233  
0.154  
0.017  
0.0125  
Idle  
Standby  
Sleep  
0.15  
1.7.1.1 Typical current profile  
Current (amps)  
2.0  
1.5  
1.0  
0.5  
0
-0.5  
-1.0  
-1.5  
-2.0  
5
1
2
3
4
6
7
Time (seconds)  
Figure 1. Typical startup and operation current profile  
10  
U Series CE Family Product Manual, Rev. A  
1.7.2 Conducted noise  
Input noise ripple is measured at the host system power supply across  
an equivalent 80-ohm resistive load on the +12 volt line or an equivalent  
15-ohm resistive load on the +5 volt line.  
Using 12-volt power, the drive is expected to operate with a maximum  
of 120 mV peak-to-peak square-wave injected noise at up to 10 MHz.  
Using 5-volt power, the drive is expected to operate with a maximum  
of 100 mV peak-to-peak square-wave injected noise at up to 10 MHz.  
Note. Equivalent resistance is calculated by dividing the nominal volt-  
age by the typical RMS read/write current.  
1.7.3 Voltage tolerance  
Voltage tolerance (including noise): 5V ± 5% and 12V ± 10%  
1.7.4 Power-management modes  
The drive provides programmable power management to provide great-  
er energy efficiency. In most systems, you can control power manage-  
ment through the system setup program. The drive features the following  
power-management modes:  
Power Modes Heads  
Spindle  
Rotating  
Rotating  
Stopped  
Stopped  
Buffer  
Active  
Idle  
Tracking  
Tracking  
Parked  
Enabled  
Enabled  
Enabled  
Disabled  
Standby  
Sleep  
Parked  
Active mode  
The drive is in Active mode during the read/write and seek operations.  
Idle mode  
The buffer remains enabled, and the drive accepts all commands and  
returns to Active mode any time disc access is necessary.  
Standby mode  
The drive enters Standby mode when the host sends a Standby  
Immediate command. If the host has set the standby timer, the drive  
can also enter Standby mode automatically after the drive has been  
inactive for a specifiable length of time. The standby timer delay is  
U Series CE Family Product Manual, Rev. A  
11  
established using a Standby or Idle command. In Standby mode, the  
drive buffer is enabled, the heads are parked and the spindle is at rest.  
The drive accepts all commands and returns to Active mode any time  
disc access is necessary.  
Sleep mode  
The drive enters Sleep mode after receiving a Sleep command from  
the host. In Sleep mode, the drive buffer is disabled, the heads are  
parked and the spindle is at rest. The drive leaves Sleep mode after  
it receives a Hard Reset or Soft Reset from the host. After receiving a  
reset, the drive exits Sleep mode and enters Standby mode with all  
current translation parameters intact.  
Idle and Standby timers  
Each time the drive performs an Active function (read, write or seek),  
the standby timer is reinitialized and begins counting down from its  
specified delay times to zero. If the standby timer reaches zero before  
any drive activity is required, the drive makes a transition to Standby  
mode. In both Idle and Standby mode, the drive accepts all commands  
and returns to Active mode when disc access is necessary.  
1.8 Environmental tolerances  
1.8.1 Ambient temperature  
Ambient temperature is defined as the temperature of the environment  
immediately surrounding the drive. Actual drive case temperature should  
not exceed 65°C (149°F) within the operating ambient conditions. Rec-  
ommended measurement locations are shown in Figure 3 on page 20.  
Above 1,000 feet (305 meters), the maximum temperature is derated  
linearly to 112°F (44°C) at 10,000 feet (3,048 meters).  
Operating  
0° to 60°C (32° to 131°F)  
Nonoperating  
–40° to 70°C (–40° to 158°F)  
1.8.2 Temperature gradient  
Operating/Nonoperating  
20°C per hour (36°F per hour) max,  
without condensation  
12  
U Series CE Family Product Manual, Rev. A  
1.8.3 Humidity  
1.8.3.1 Relative Humidity  
Operating  
5% to 90% noncondensing (30% per hour max)  
Nonoperating  
5% to 95% noncondensing (30% per hour max)  
1.8.3.2 Wet bulb temperature  
Operating  
29.4°C (84°F) max  
Nonoperating  
40.0°C (104°F) max  
1.8.4 Altitude  
Operating  
–60.96 m to 3,048 m (–200 ft to 10,000+ ft)  
–121.92 m to 12,192 m (–400 ft to 40,000+ ft)  
Nonoperating  
1.8.5 Shock  
All shock specifications assume that the drive is mounted securely with  
the input shock applied at the drive mounting screws. Shock may be  
applied in the X, Y or Z axis.  
1.8.5.1 Operating shock  
These drives comply with the performance levels specified in this docu-  
ment when subjected to a maximum operating shock of 63 Gs (based  
on half-sine shock pulses of 2 msec). Shocks should not be repeated  
more than two times per second.  
1.8.5.2 Nonoperating shock  
The nonoperating shock level that the drive can experience without  
incurring physical damage or degradation in performance when subse-  
quently put into operation is 350 Gs (based on nonrepetitive half-sine  
shock pulses of 1 and 2 msec duration).  
1.8.6 Vibration  
All vibration specifications assume that the drive is mounted securely  
with the input vibration applied at the drive mounting screws. Vibration  
may be applied in the X, Y or Z axis.  
U Series CE Family Product Manual, Rev. A  
13  
1.8.6.1 Operating vibration  
The following table lists the maximum vibration levels that the drive may expe-  
rience while meeting the performance standards specified in this document.  
5–21 Hz  
0.02-inch displacement (peak to peak)  
0.5 Gs acceleration (zero to peak)  
0.25 Gs acceleration (zero to peak)  
22–350 Hz  
351–500 Hz  
1.8.6.2 Nonoperating vibration  
The following table lists the maximum nonoperating vibration that the  
drive may experience without incurring physical damage or degradation  
in performance when subsequently put into operation.  
5–21 Hz  
0.2-inch displacement (peak to peak)  
5.0 Gs acceleration (zero to peak)  
1.0 Gs acceleration (zero to peak)  
22–350 Hz  
351–500 Hz  
1.9 Drive acoustics  
Drive acoustics are measured as overall A-weighted acoustic sound  
power levels (no pure tones). All measurements are generally consistent  
with ISO document 7779. Sound power measurements were taken  
under essentially free-field conditions over a reflecting plane. For all  
tests, the drive was oriented with the cover facing upward.  
Note. For seek mode tests, the drive was placed in seek mode only.  
The number of seeks per second is defined by the following  
equation:  
(Number of seeks per second = 0.4 / (average latency + average access time)  
ST380020ACE, ST360020ACE, ST340810ACE and ST320410ACE  
Acoustic mode  
Idle  
Performance Seek  
Sound power (bels)  
2.7 (typ) 3.0 (max)  
2.9 (typ) 3.2 (max)  
14  
U Series CE Family Product Manual, Rev. A  
1.10 Electromagnetic immunity  
When properly installed in a representative host system, the drive  
operates without errors or degradation in performance when subjected  
to the radio frequency (RF) environments defined in the following table:  
Test  
Description  
Performance  
Level  
Reference  
Standard  
Electrostatic  
discharge  
Contact,HCP,VCP:±4 kV;Air:  
B
A
EN 61000-4-2: 95  
± 8 kV  
Radiated RF 80 to 1,000 MHz, 3 V/m,  
immunity  
EN 61000-4-3: 96  
ENV 50204: 95  
80% AM with 1 kHz sine  
900 MHz, 3 V/m, 50% pulse  
modulation @ 200 Hz  
Electrical fast ± 1 kV on AC mains, ± 0.5 kV  
B
B
A
EN 61000-4-4: 95  
EN 61000-4-5: 95  
EN 61000-4-6: 97  
transient  
on external I/O  
Surge  
immunity  
± 1 kV differential, ± 2 kV com-  
mon, AC mains  
Conducted  
RF  
150 kHz to 80 MHz, 3 Vrms,  
80% AM with 1 kHz sine  
immunity  
Voltage dips, 0% open, 5 seconds  
C
C
C
B
EN 61000-4-11: 94  
interrupts  
0% short, 5 seconds  
40%, 0.10 seconds  
70%, 0.01 seconds  
1.11 Reliability  
Nonrecoverable read errors  
13  
1 per 10 bits read, max  
Mean time between failures  
Contact start-stop cycles  
600,000 power-on hours (nominal power,  
25°C ambient temperature)  
50,000 cycles  
(atnominalvoltageandtemperature, with  
60 cycles per hour and a 50% duty cycle)  
Preventive maintenance  
None required  
1.12 Agency certification  
1.12.1 Safety certification  
The drives are recognized in accordance with UL 1950 and CSA C22.2  
(950) and meet all applicable sections of IEC950 and EN 60950 as tested  
by TUV North America.  
U Series CE Family Product Manual, Rev. A  
15  
1.12.2 Electromagnetic compatibility  
Hard drives that display the CE mark comply with the European Union  
(EU) requirements specified in the Electromagnetic Compatibility Direc-  
tive (89/336/EEC). Testing is performed to the levels specified by the  
product standards for Information Technology Equipment (ITE). Emis-  
sion levels are defined by EN 55022, Class B and the immunity levels  
are defined by EN 55024.  
Seagate uses an independent laboratory to confirm compliance with the  
EC directives specified in the previous paragraph. Drives are tested in  
representative end-user systems. Although CE-marked Seagate drives  
comply with the directives when used in the test systems, we cannot  
guarantee that all systems will comply with the directives. The drive is  
designed for operation inside a properly designed enclosure, with prop-  
erly shielded I/O cable (if necessary) and terminators on all unused I/O  
ports. Computer manufacturers and system integrators should confirm  
EMC compliance and provide CE marking for their products.  
Taiwan BSMI  
If these drives have two Chinese words meaning “EMC certification”  
followed by an eight digit identification number, as a Marking, it complies  
with Chinese National Standard (CNS) 13438 and meets the Electro-  
magnetic Compatibility (EMC) Framework requirements of the Taiwan-  
ese Bureau of Standards, Metrology and Inspection (BSMI).  
Korean RRL  
If these models have the Korea Ministry of Information and Communica-  
tion (MIC) logo, they comply with paragraph 1 of Article 11 of the  
Electromagnetic Compatibility control Regulation and meet the Electro-  
magnetic Compatibility (EMC) Framework requirements of the Radio  
Research Laboratory (RRL) Ministry of Information and Communication  
Republic of Korea.  
These drives have been tested and comply with the Electromagnetic  
Interference/Electromagnetic Susceptibility (EMI/EMS) for Class B prod-  
ucts. Drives are tested in a representative, end-user system by a Korean-  
recognized lab.  
EUT name (model numbers): ST380020ACE, ST360020ACE,  
ST340810ACE, ST320410ACE  
Certificate numbers: E-H011-01-2191 (B), E-H011-01-2206 (B),  
E-H011-01-2190 (B), E-H011-01-2170 (B)  
Trade name or applicant: Seagate Technology  
Manufacturing date: June 2001  
Manufacturer/nationality: Singapore  
16  
U Series CE Family Product Manual, Rev. A  
Australian C-Tick (N176)  
If these models have the C-Tick marking, they comply with the Australia/  
New Zealand Standard AS/NZS3548 1995 and meet the Electromag-  
netic Compatibility (EMC) Framework requirements of the Australian  
Communication Authority (ACA).  
1.12.3 FCC verification  
These drives are intended to be contained solely within a personal com-  
puter or similar enclosure (not attached as an external device). As such,  
each drive is considered to be a subassembly even when it is individually  
marketed to the customer. As a subassembly, no Federal Communications  
Commission verification or certification of the device is required.  
Seagate Technology, LLC has tested this device in enclosures as  
described above to ensure that the total assembly (enclosure, disc drive,  
motherboard, power supply, etc.) does comply with the limits for a Class  
B computing device, pursuant to Subpart J, Part 15 of the FCC rules.  
Operation with noncertified assemblies is likely to result in interference  
to radio and television reception.  
Radio and television interference. This equipment generates and  
uses radio frequency energy and if not installed and used in strict  
accordance with the manufacturer’s instructions, may cause interfer-  
ence to radio and television reception.  
This equipment is designed to provide reasonable protection against  
such interference in a residential installation. However, there is no  
guarantee that interference will not occur in a particular installation. If  
this equipment does cause interference to radio or television, which can  
be determined by turning the equipment on and off, you are encouraged  
to try one or more of the following corrective measures:  
Reorient the receiving antenna.  
Move the device to one side or the other of the radio or TV.  
Move the device farther away from the radio or TV.  
Plug the computer into a different outlet so that the receiver and  
computer are on different branch outlets.  
If necessary, you should consult your dealer or an experienced radio/  
television technician for additional suggestions. You may find helpful the  
following booklet prepared by the Federal Communications Commis-  
sion: How to Identify and Resolve Radio-Television Interference Prob-  
lems. This booklet is available from the Superintendent of Documents,  
U.S. Government Printing Office, Washington, DC 20402. Refer to pub-  
lication number 004-000-00345-4.  
U Series CE Family Product Manual, Rev. A  
17  
2.0 Configuring and mounting the drive  
This section contains the specifications and instructions for configuring  
and mounting the drive.  
2.1 Handling and static-discharge precautions  
After unpacking, and before installation, the drive may be exposed to  
potential handling and electrostatic discharge (ESD) hazards. Observe the  
following standard handling and static-discharge precautions:  
Caution:  
The SeaShellreplaces electrostatic discharge (ESD) bags. The  
SeaShell package is a shock-ribbed, transparent clamshell enclosure  
that limits a drive’s exposure to ESD and also protects against external  
shocks and stresses. The design permits attaching cables, software  
loading and label/barcode scanning without removing the drive from  
the SeaShell. This minimizes handling damage. Keep the drive in the  
SeaShell package until you are ready for installation.  
The drive is enclosed in a black, flexible cover called a SeaShield. Do  
not remove this permanent cover—it protects the drive from electro-  
static discharge (ESD) and minor impact damage. The soft SeaShield  
cover also includes installation instructions and jumper settings. Re-  
moving the SeaShield voids the warranty.  
Before handling the drive, put on a grounded wrist strap, or ground  
yourself frequently by touching the metal chassis of a computer that  
is plugged into a grounded outlet. Wear a grounded wrist strap  
throughout the entire installation procedure.  
Handle the drive by its edges or frame only.  
The drive is extremely fragile—handle it with care. Do not press down  
on the drive top cover.  
Always rest the drive on a padded, antistatic surface until you mount  
it in the computer.  
Do not touch the connector pins or the printed circuit board.  
Do not remove the factory-installed labels from the drive or cover them  
with additional labels. Removal voids the warranty. Some factory-  
installed labels contain information needed to service the drive. Other  
labels are used to seal out dirt and contamination.  
18  
U Series CE Family Product Manual, Rev. A  
2.2 Jumper settings  
2.2.1 Master/slave configuration  
The options jumper block shown in Figure 2 is used to configure the drive  
for operation. It is the 8-pin dual header between the interface connector  
and the power connector. Use the following settings to configure the  
drive as a master or a slave.  
Masteror single drive. The drive is configured at the factory for a master  
or single-drive operation with a jumper set on pins 7 and 8.  
Drive as slave. Remove all jumpers.  
Drive as master with a non-ATA-compatible slave.  
Set a jumper on pins 5 and 6 and a jumper on pins 7 and 8. Use this  
jumper setting only if the drive does not work as a master with no jumpers  
installed.  
Options jumper block  
Master or single drive  
Drive is slave  
Master with non ATA-  
compatible slave  
Cable select  
Limit drive capacity  
>32 Gbytes = 32 Gbytes  
<32 Gbytes = 2.1 Gbytes  
7 5 3 1  
8 6 4  
2
Circuit Board  
Figure 2. Master/slave jumper settings  
U Series CE Family Product Manual, Rev. A  
19  
2.2.2 Cable-select option  
Computers that use cable-select determine the master and slave drives  
by selecting or deselecting pin 28, CSEL, on the interface bus. Master  
and slave drives are determined by their physical position on the cable.  
To enable cable select, set a jumper on pins 5 and 6 as shown in Figure  
2 on page 18. Refer to your computer manual to determine whether your  
computer supports this option.  
2.2.3 Alternate capacity jumper  
Some older computers may “hang” at startup if their BIOS detects a hard  
drive that has values greater than either 4,092 (2.1 Gbytes) cylinders or  
approximately 32 Gbytes. To eliminate this problem, the drive includes  
acapacity-limitingjumperthatsetsthedrive’sdefaulttranslationgeometry  
to4,092cylindersformodelST320410ACEandlimitsthedrive’scapacity  
to2.1Gbytes.TheST380020ACE,ST360020ACEandtheST340810ACE  
are limited to 32 Gbytes when the alternate capacity jumper is used. To  
realize the full capacity of the drive, you can use third-party software  
such as DiscWizard or Disk Manager.  
If the alternate capacity jumper is used on drives under 32 Gbytes, the  
drive’s true LBAs are found in ID words 60 and 61. On larger-capacity  
drives, the alternate capacity jumper “freezes” words 60 and 61 at a value  
below the problem barrier point. The ATA Set Max command is used to  
“unfreeze” and fill the real values in words 60 and 61 after the command  
is issued.  
Windows 98 or newer versions are needed to support drives with  
capacities greater than 32 Gbytes.  
2.2.4 Ultra ATA/100 cable  
An 80-conductor 40-pin cable is required to run Ultra DMA mode 3, mode  
4 and mode 5. This cable uses even-numbered conductors connected  
to the ground pins to improve signal integrity.  
Notes:  
1. The drive supports both host and drive cable detection. The host  
detects the 80-conductor cable by sampling pin 34, CBLID–, on  
the interface bus. The drive detects the 80-conductor cable by  
sensing a capacitor at the host side through the CBLID– signal.  
The result is reported in a Fast Rise Detected bit (bit 13 of word  
93 in the Identify drive parameter block).  
2. When using a 40-pin 80-conductor cable, attach the blue con-  
nector to the motherboard, the black connector to the master  
drive, and the grey connector to the slave.  
20  
U Series CE Family Product Manual, Rev. A  
2.1 Drive mounting  
You can mount the drive in any orientation using four screws in the side-  
mounting holes or four screws in the bottom-mounting holes. See Figure  
3 for drive mounting dimensions. Follow these important mounting  
precautions when mounting the drive:  
Allow a minimum clearance of 0.030 inches (0.76 mm) around the  
entire perimeter of the drive for cooling.  
Use only 6-32 UNC mounting screws. Insert the screws no more than  
0.20 inch (5.08 mm) into the bottom mounting holes and no more than  
0.14 inch (3.55 mm) into the side mounting holes.  
Do not overtighten the mounting screws (maximum torque: 6 inch-lb).  
Do not use a drive interface cable that is more than 18 inches long.  
Note: Dimensions are shown in inches (mm).  
1.00 ± 0.028  
(25.4 ± 0.7)  
2.23 ± 0.03  
0.180 ± 0.015  
(4.57 ± 0.38)  
0.230 ± 0.015  
(5.84 ± 0.38)  
(56.6 ± 0.8)  
3.72 ± 0.03  
(94.5 ± 0.8)  
3X 6-32 UNC-2B  
max. insertion depth  
0.14 (3.6) both sides  
4X 6-32 UNC-2B  
max. insertion  
depth 0.22 (5.6)  
4.000 ± 0.010  
(101.60 ± 0.25)  
1.750 ± 0.010  
(44.45 ± 0.25)  
5.75 ± 0.03  
(146.2 ± 0.8)  
2.362 ± 0.010  
(59.99 ± 0.25)  
2.375 +0.030, –0.005  
(60.33 +0.76, –0.13)  
0.630 +0.030, –0.005  
(16.00 +0.76, –0.13)  
3.750 ± 0.010  
(95.25 ± 0.25)  
4.00 ± 0.02  
(101.3 ± 0.5)  
0.125 +0.030, –0.005  
(3.18 +0.76, –0.13)  
3X.250 ± .015  
(6.35 ± 0.38)  
(both sides)  
Recommended  
Recommended  
case temperature  
measurement location  
case temperature  
measurement location  
Figure 3. Mounting dimensions—top, side and end view  
U Series CE Family Product Manual, Rev. A  
21  
3.0 ATA interface  
These drives use the industry-standard ATA task file interface that  
supports 16-bit data transfers. It supports ATA programmed input/output  
(PIO) modes 0–4; multiword DMA modes 0–2, and Ultra DMA modes  
0–5. The drive also supports the use of the IORDY signal to provide  
reliable high-speed data transfers.  
You can use a daisy-chain cable to connect two drives to a single AT  
host bus. For detailed information about the ATA interface, refer to the  
draft of AT Attachment with Packet Interface Extension (ATA/ATAPI-Rev  
6), NCITS T13 1153D, subsequently referred to as the Draft ATA-Rev 6  
Standard.  
3.1 ATA interface signals and connector pins  
Figure 4 on page 22 summarizes the signals on the ATA interface  
connector that the drive supports. For a detailed description of these  
signals, refer to the Draft ATA-Rev 6 Standard.  
22  
U Series CE Family Product Manual, Rev. A  
Drive pin #  
Host pin # and signal description  
Signal name  
1
2
Reset  
1
2
3
4
5
6
7
8
9
Hardware Reset  
Ground  
DD7  
Ground  
3
Host Data Bus Bit 7  
Host Data Bus Bit 8  
Host Data Bus Bit 6  
Host Data Bus Bit 9  
Host Data Bus Bit 5  
Host Data Bus Bit 10  
Host Data Bus Bit 4  
4
DD8  
5
DD6  
6
DD9  
7
DD5  
8
DD10  
DD4  
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
DD11  
DD3  
10 Host Data Bus Bit 11  
11 Host Data Bus Bit 3  
12 Host Data Bus Bit 12  
13 Host Data Bus Bit 2  
14 Host Data Bus Bit 13  
15 Host Data Bus Bit 1  
16 Host Data Bus Bit 14  
17 Host Data Bus Bit 0  
18 Device Data (15:0)  
19 Ground  
DD12  
DD2  
DD13  
DD1  
DD14  
DD0  
DD15  
Ground  
(removed)  
DMARQ  
Ground  
DIOW–  
STOP  
Ground  
(No Pin)  
20  
21 DMA Request  
22 Ground  
23 Device I/O Write:  
Stop Ultra DMA Burst  
24 Ground  
24  
25  
DIOR  
25 Device I/O Read:  
Host Ultra DMA Ready:  
Host Ultra DMA Data Strobe  
26 Ground  
27 I/O Channel Ready  
Device Ultra DMA Ready  
Device Ulta DMA Data Strobe  
28 Cable Select  
29 DMA Acknowledge  
30 Ground  
31 Device Interrupt  
32 Reserved  
33 Host Address Bus Bit 1  
34 Passed Diagnostics  
Cable Assembly Type Identifier  
35 Device Address (2:0)  
36 Device Address (2:0)  
37 Chip Select (1:0)  
38 Chip Select (1:0)  
39 Drive Active/Slave Present  
40 Ground  
HDMARDY  
HSTROBE  
Ground  
26  
27  
IORDY  
DDMARDY–  
DSTROBE  
CSEL  
28  
29  
30  
31  
32  
33  
34  
DMACK  
Ground  
INTRQ  
IOCS16  
DA1  
PDIAG  
CBLID–  
35  
36  
37  
38  
39  
40  
DA0  
DA2  
CS0  
CS1  
DASP  
Ground  
Pins 28, 34 and 39 are used for master-slave communication (details shown below).  
Drive 1 (slave)  
Drive 0 (master)  
Host  
28  
34  
39  
28  
34  
39  
CSEL  
28  
34  
39  
PDIAG  
DASP–  
Figure 4. I/O pins and supported ATA signals  
U Series CE Family Product Manual, Rev. A  
23  
3.1.1 Supported ATA commands  
The following table lists ATA-standard commands that the drive sup-  
ports. For a detailed description of the ATA commands, refer to the Draft  
ATA-Rev 6 Standard. See Section 3.1.4 on page 31 for details and  
subcommands used in the S.M.A.R.T. implementation.  
Command name  
ATA-standard commands  
Download Microcode  
Command code (in hex)  
92H  
90H  
Execute Device Diagnostics  
Flush Cache  
E7H  
Format Track  
50H  
Identify Device  
Initialize Device Parameters  
Read Buffer  
ECH  
91H  
E4H  
Read DMA  
C8H, C9H  
C4H  
Read Multiple  
Read Sectors  
20H, 21H  
40H, 41H  
F8H  
Read Verify Sectors  
Read Native Max Address  
Recalibrate  
10H  
Seek  
70H  
Set Features  
EFH  
Set Multiple Mode  
Set Max Address  
S.M.A.R.T.  
C6H  
F9H  
B0H  
Write Buffer  
E8H  
Write DMA  
CAH, CBH  
24  
U Series CE Family Product Manual, Rev. A  
Command name  
Write Multiple  
Command code (in hex)  
C5H  
Write Sectors  
30H, 31H  
ATA-standard power-management commands  
Check Power Mode  
Idle  
98H or E5H  
97H or E3H  
95H or E1H  
99H or E6H  
96H or E2H  
94H or E0H  
Idle Immediate  
Sleep  
Standby  
Standby Immediate  
ATA-standard security commands  
Security Set Password  
Security Unlock  
F1H  
F2H  
F3H  
F4H  
F5H  
F6H  
Security Erase Prepare  
Security Erase Unit  
Security Freeze Lock  
Security Disable Password  
3.1.2 Identify Drive command  
The Identify Drive command (command code ECH) transfers information  
about the drive to the host following power up. The data is organized as  
a single 512-byte block of data, whose contents are shown in the table  
on page 25. All reserved bits or words should be set to zero. Parameters  
listed with an “x” are drive-specific or vary with the state of the drive. See  
Section 1 of this manual for default parameter settings.  
The following commands contain drive-specific features that may not be  
included in the Draft ATA-Rev 6 Standard.  
U Series CE Family Product Manual, Rev. A  
25  
Word  
Description  
Value  
0
Configuration information:  
Bit 15: 0 = ATA; 1 = ATAPI  
Bit 7: removable media  
Bit 6: removable controller  
Bit 0: reserved  
0C5AH  
16,383  
0000H  
16  
1
2
3
4
5
6
Number of logical cylinders  
ATA-reserved  
Number of logical heads  
Retired  
0000H  
0000H  
Retired  
Numberoflogicalsectorsper  
logical track: 63  
003FH  
0000H  
7–9  
Retired  
10–19 Serial number: (20 ASCII  
characters, 0000H = none)  
ASCII  
0000H  
0400H  
0004H  
20  
21  
22  
Retired  
Retired  
Obsolete  
23–26 Firmware revision (8 ASCII  
characterstring, paddedwith  
blanks to end of string)  
x.xx  
ST380020ACE  
ST360020ACE  
ST340810ACE  
ST320410ACE  
27–46 Drive model number: (40  
ASCII characters, padded  
with blanks to end of string)  
47  
Maximum sectors per inter-  
rupt on Read multiple and  
Write multiple (32)  
8020H  
0000H  
2F00H  
48  
49  
Reserved  
Standard Standby timer,  
IORDY supported and may  
be disabled  
26  
U Series CE Family Product Manual, Rev. A  
Word  
Description  
Value  
50  
Device-specific standby  
timer value  
0000H  
51  
PIO data-transfer cycle  
timing mode  
0200H  
0200H  
52  
53  
Retired  
Words 54–58, 64–70 and 88  
are valid  
0007H  
xxxxH  
54  
55  
56  
Number of current logical  
cylinders  
Number of current logical  
heads  
xxxxH  
Number of current logical  
sectors per logical track  
xxxxH  
xxxxH  
57–58 Current capacity in sectors  
59  
Number of sectors trans-  
ferred during a Read Multiple  
or Write Multiple command  
xxxxH  
ST380020ACE = 160,045,200  
ST360020ACE = 120,033,900  
ST340810ACE = 80,022,600  
ST320410ACE = 40,011,300  
60–61 Total numberof user-addres-  
sable LBA sectors available  
(see Section 2.2.3 for related  
information)  
62  
63  
Retired  
0000H  
xx07H  
Multiword DMA active and  
modes supported (see note  
following this table)  
64  
65  
Advanced PIO modes sup-  
ported (modes 3 and 4 sup-  
ported)  
0003H  
0078H  
Minimum multiword DMA  
transfer cycle time per word  
(120 nsec)  
U Series CE Family Product Manual, Rev. A  
27  
Word  
Description  
Value  
66  
Recommended multiword  
DMA transfer cycle time per  
word (120 nsec)  
0078H  
67  
68  
Minimum PIO cycle time  
without IORDY flow control  
(240 nsec)  
00F0H  
0078H  
Minimum PIO cycle time with  
IORDY flow control (120  
nsec)  
69–74 ATA-reserved  
75 Queue depth  
76–79 ATA-reserved  
0000H  
0000H  
0000H  
007EH  
0000H  
346BH  
4B09H  
4003H  
80  
81  
82  
83  
84  
Major version number  
Minor version number  
Command sets supported  
Command sets supported  
Command sets support  
extension  
85  
86  
87  
Command sets enabled  
Command sets enabled  
xxxxH  
xxxxH  
xxxxH  
Command sets enable  
extension  
88  
Ultra DMA support and  
current mode  
xx3FH  
(see note following this table)  
89  
90  
Security erase time  
0000H  
0000H  
Enhanced security erase  
time  
91  
Advanced Power Manage-  
ment value  
0040H  
28  
U Series CE Family Product Manual, Rev. A  
Word  
Description  
Value  
92  
Master Password Revision  
code  
FFFEH  
93  
94  
Hardware Reset Value  
(see description following  
this table)  
xxxxH  
xxxxH  
Auto Acoustic Management  
Setting  
95–127 ATA-reserved  
0000H  
0001H  
xxxxH  
128  
Security Status  
129–  
159  
Seagate-reserved  
160–  
254  
ATA-reserved  
0000H  
255  
Integrity word  
xxA5H  
Note. See the bit descriptions below for words 63, 88 and 93 of the  
Identify Drive data:  
Description (if bit is set to 1)  
Bit  
0
Word 63  
Multiword DMA mode 0 is supported.  
Multiword DMA mode 1 is supported.  
Multiword DMA mode 2 is supported.  
Multiword DMA mode 0 is currently active.  
Multiword DMA mode 1 is currently active.  
Multiword DMA mode 2 is currently active.  
Word 88  
1
2
8
9
10  
Bit  
0
Ultra DMA mode 0 is supported.  
Ultra DMA mode 1 is supported.  
Ultra DMA mode 2 is supported.  
1
2
U Series CE Family Product Manual, Rev. A  
29  
3
Ultra DMA mode 3 is supported.  
Ultra DMA mode 4 is supported.  
Ultra DMA mode 5 is supported.  
Ultra DMA mode 0 is currently active.  
Ultra DMA mode 1 is currently active.  
Ultra DMA mode 2 is currently active.  
Ultra DMA mode 3 is currently active.  
Ultra DMA mode 4 is currently active.  
Ultra DMA mode 5 is currently active.  
Word 93  
4
5
8
9
10  
11  
12  
13  
Bit  
13  
1 = 80-conductor cable detected, CBLID above VIH  
0 = 40-conductor cable detected, CBLID below VIL  
Bit  
Word 94  
0–7  
Current AAM setting  
8–15 AAM Power on default  
3.1.3 Set Features command  
This command controls the implementation of various features that the  
drive supports. When the drive receives this command, it sets BSY,  
checks the contents of the Features register, clears BSY and generates  
an interrupt. If the value in the register does not represent a feature that  
the drive supports, the command is aborted. Power-on default has the  
read look-ahead and write caching features enabled. The acceptable  
values for the Features register are defined as follows:  
02H  
03H  
Enable write cache (default).  
Set transfer mode (based on value in Sector Count register).  
Sector Count register values:  
00H Set PIO mode to default (PIO mode 2).  
01H Set PIO mode to default and disable IORDY  
(PIO mode 2).  
08H PIO mode 0  
30  
U Series CE Family Product Manual, Rev. A  
09H PIO mode 1  
0AH PIO mode 2  
0BH PIO mode 3  
0CH PIO mode 4 (default)  
20H Multiword DMA mode 0  
21H Multiword DMA mode 1  
22H Multiword DMA mode 2  
40H Ultra DMA mode 0  
41H Ultra DMA mode 1  
42H Ultra DMA mode 2  
43H Ultra DMA mode 3  
44H Ultra DMA mode 4  
45H Ultra DMA mode 5  
05H  
Enable advanced power management.  
Auto Acoustic Management  
FEH Performance Seek  
42H  
80H Quiet Acoustic Seek  
Disable read look-ahead (read cache) feature.  
Disable write cache.  
55H  
82H  
AAH  
Enable read look-ahead (read cache) feature (default).  
Note. At power-on, or after a hardware or software reset, the default  
values of the features are as indicated above.  
U Series CE Family Product Manual, Rev. A  
31  
3.1.4 S.M.A.R.T. commands  
S.M.A.R.T. provides near-term failure prediction for disc drives. When  
S.M.A.R.T. is enabled, the drive monitors predetermined drive attributes  
thataresusceptibletodegradationovertime. Ifself-monitoringdetermines  
that a failure is likely, S.M.A.R.T. makes a status report available to the  
host. Not all failures are predictable. S.M.A.R.T. predictability is limited to  
the attributes the drive can monitor. For more information on S.M.A.R.T.  
commands and implementation, see the Draft ATA-Rev 6 Standard.  
SeaTools diagnostic software activates a built-in drive self-test (DST)  
S.M.A.R.T. command for D4H that eliminates unnecessary drive returns.  
The diagnostic software ships with all new drives and is also available at:  
This drive is shipped with S.M.A.R.T. features disabled. You must have  
a recent BIOS or software package that supports S.M.A.R.T. to enable  
this feature. The table below shows the S.M.A.R.T. command codes that  
the drive uses.  
CodeinFeatures S.M.A.R.T. Command  
Register  
D0H  
D1H  
D2H  
D3H  
D4H  
S.M.A.R.T. Read Data  
Obsolete  
S.M.A.R.T. Enable/Disable Attribute Autosave  
S.M.A.R.T. Save Attribute Values  
S.M.A.R.T. Execute Off-line Immediate  
(runs DST)  
D5H  
D6H  
D7H  
D8H  
D9H  
DAH  
S.M.A.R.T. Read Log Sector  
S.M.A.R.T. Write Log Sector  
Obsolete  
S.M.A.R.T. Enable Operations  
S.M.A.R.T. Disable Operations  
S.M.A.R.T. Return Status  
Note. If an appropriate code is not written to the Features Register, the  
command is aborted and 0x04 (abort) is written to the Error  
register.  
Seagate Technology LLC  
920 Disc Drive, Scotts Valley, California 95066, USA  
Publication Number: 100140718, Rev. A, Printed in USA  

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