Seagate ST3400833SCE User Manual

Product Manual  
DB35.2 Serial ATA  
ST3500841SCE  
ST3400833SCE  
ST3300822SCE  
ST3250824SCE  
ST3200827SCE  
ST3160212SCE  
ST3120213SCE  
ST3802110SCE  
100390003  
Rev. C  
August 2007  
Contents  
5.0  
DB35.2 Serial ATA Product Manual, Rev. C  
i
ii  
DB35.2 Serial ATA Product Manual, Rev. C  
1.0  
Introduction  
This manual describes the functional, mechanical and interface specifications for the following Seagate  
DB35.2 Serial ATA (SATA) model drives:  
• ST3500841SCE  
• ST3400833SCE  
• ST3300822SCE  
• ST3250824SCE  
• ST3200827SCE  
• ST3160212SCE  
• ST3120213SCE  
• ST3802110SCE  
These drives provide the following key features:  
• Minimal acoustics for consumer storage usage profile.  
• Bedroom quiet performance.  
• Optimized power for consumer storage devices.  
• Spinup current limited to a maximum of 2 amps.  
• 7,200 RPM spindle speed.  
• 8 Mbyte buffer: ST3500841SCE, ST3400833SCE, ST3300822SCE, ST3250824SCE, and ST3200827SCE.  
• 2 Mbyte buffer: ST3160212SCE, ST3120213SCE, and ST3802110SCE.  
• High instantaneous (burst) data-transfer rates (up to 300 Mbytes per second).  
• Tunneling Magnetoresistive (TMR) recording heads.  
• Native Command Queueing with command ordering to increase performance in demanding applications.  
• State-of-the-art cache and on-the-fly error-correction algorithms.  
• Full-track multiple-sector transfer capability without local processor intervention.  
• 350 Gs nonoperating shock.  
• Support for S.M.A.R.T. drive monitoring and reporting.  
• SeaTools diagnostic software performs a drive self-test that eliminates unnecessary drive returns.  
• Supports latching SATA cables and connectors.  
DB35.2 Serial ATA Product Manual, Rev. C  
1
         
1.1  
About the Serial ATA interface  
The Serial ATA interface provides several advantages over the traditional (parallel) ATA interface. The primary  
advantages include:  
• Easy installation and configuration with true plug-and-play connectivity. It is not necessary to set any jump-  
ers or other configuration options.  
• Thinner and more flexible cabling for improved enclosure airflow and ease of installation.  
• Scalability to higher performance levels.  
In addition, Serial ATA makes the transition from parallel ATA easy by providing legacy software support. Serial  
ATA was designed to allow you to install a Serial ATA host adapter and Serial ATA disc drive in your current  
system and expect all of your existing applications to work as normal.  
The Serial ATA interface connects each disc drive in a point-to-point configuration with the Serial ATA host  
adapter. There is no master/slave relationship with Serial ATA devices like there is with parallel ATA. If two  
drives are attached on one Serial ATA host adapter, the host operating system views the two devices as if they  
were both “masters” on two separate ports. This essentially means both drives behave as if they are Device 0  
(master) devices.  
Note. The host adapter may, optionally, emulate a master/slave environment to host software where two  
devices on separate Serial ATA ports are represented to host software as a Device 0 (master) and  
Device 1 (slave) accessed at the same set of host bus addresses. A host adapter that emulates a  
master/slave environment manages two sets of shadow registers. This is not a typical Serial ATA  
environment.  
The Serial ATA host adapter and drive share the function of emulating parallel ATA device behavior to provide  
backward compatibility with existing host systems and software. The Command and Control Block registers,  
PIO and DMA data transfers, resets, and interrupts are all emulated.  
The Serial ATA host adapter contains a set of registers that shadow the contents of the traditional device regis-  
ters, referred to as the Shadow Register Block. All Serial ATA devices behave like Device 0 devices. For addi-  
tional information about how Serial ATA emulates parallel ATA, refer to the “Serial ATA: High Speed Serialized  
2
DB35.2 Serial ATA Product Manual, Rev. C  
       
2.0  
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  
following models:  
ST3500841SCE  
ST3400833SCE  
ST3300822SCE  
ST3250824SCE  
ST3200827SCE  
ST3160212SCE  
ST3120213SCE  
ST3802110SCE  
2.1  
Specification summaries  
The specifications listed in tables 1 and 2 are for quick reference. For details on specification measurement or  
definition, see the appropriate section of this manual.  
DB35.2 Serial ATA Product Manual, Rev. C  
3
       
Table 1:  
Drive specifications for 500 and 400 Gbyte models  
Drive specification  
ST3500841SCE  
ST3400833SCE  
Formatted Gbytes (512 bytes/sector)*  
Guaranteed sectors  
500  
400  
976,773,168  
512  
781,422,768  
Bytes per sector  
Default sectors per track  
63  
Default read/write heads  
16  
Default cylinders  
16,383  
790.1  
124.5  
97.96  
7,200  
815.2  
65  
Recording density in BPI (kbits/inch max)  
Track density TPI (ktracks/inch avg)  
2
Areal density (Gbits/inch avg)  
Spindle speed (RPM)  
Internal data transfer rate (Mbits/sec max)  
Sustained transfer rate (Mbytes/sec max)  
I/O data transfer rate (Mbytes/sec max)  
ATA data-transfer modes supported  
300  
PIO modes 0–4  
Multiword DMA modes 0–2  
Ultra DMA modes 0–6  
SATA data-transfer modes supported  
3.0 Gbits/sec  
1.5 Gbits/sec  
Cache buffer  
8 Mbytes  
Height (max)  
26.1 mm (1.028 inches)  
Width (max)  
101.6 mm (4.000 inches) +/-0.010 inches  
Length (max)  
146.99 mm (5.787 inches)  
710 grams  
Weight (max) grams  
Average latency (msec)  
Power-on to ready (typical)  
Standby to ready (typical)  
Track-to-track seek time (msec typical)  
Average seek (msec typical)  
Startup current (typical) 12V (peak)  
Seek power (typical)  
4.16  
16 sec  
16 sec  
<0.8 (read), <1.0 (write)  
18 (read), 20 (write)  
2.0 amps  
12.60 watts  
9.20 watts  
Operating (Consumer Storage Profile)  
Operating (PVR Storage Profile)  
Idle mode (typical)  
4.88 watts  
8.00 watts  
Standby mode (typical)  
Sleep mode (typical)  
0.800 watts  
0.800 watts  
Voltage tolerance  
(including noise)  
5V ± 5%  
12V ± 10%  
Ambient temperature  
0° to 60°C (operating)  
–40° to 70°C (nonoperating)  
Temperature gradient  
(°C per hour max)  
20°C (operating)  
30°C (nonoperating)  
Relative humidity  
5% to 90% (operating)  
5% to 95% (nonoperating)  
Relative humidity gradient  
30% per hour max  
Wet bulb temperature  
(°C max)  
37.7 (operating)  
40.0 (nonoperating)  
Altitude, operating  
–60.96 m to 3,048 m  
(–200 ft to 10,000+ ft)  
4
DB35.2 Serial ATA Product Manual, Rev. C  
                                                                                               
Table 1:  
Drive specifications for 500 and 400 Gbyte models  
Drive specification  
ST3500841SCE  
ST3400833SCE  
Altitude, nonoperating  
(meters below mean sea level, max)  
–60.96 m to 12,192 m  
(–200 ft to 40,000+ ft)  
Shock, operating (max at 2 msec)  
Shock, nonoperating (max at 2 msec)  
Vibration, operating  
63 Gs  
300 Gs  
5-22 Hz: +/-0.25”, Displacement limited  
22-350 Hz: 0.5 Gs  
350-500 Hz: 0.25 Gs  
Vibration, nonoperating  
5-22 Hz: +/-0.25”, Displacement limited  
23-350 Hz: 5.0 Gs  
351-500 Hz: 1.0 Gs  
Drive acoustics, sound power  
Idle** (bels)  
2.79 (typical)  
2.96 (max)  
2.59 (typical)  
2.75 (max)  
Operational, CE seeks (bels)  
Operational, PVR seeks (bels)  
2.82 (typical)  
2.97 (max)  
2.75 (typical)  
2.90 (max)  
2.71 (typical)  
2.88 (max)  
2.61 (typical)  
2.75 (max)  
14  
Nonrecoverable read errors  
Annualized Failure Rate (AFR)  
Warranty  
1 per 10 bits read  
0.70%  
5 years on distribution units.  
To determine the warranty for a specific drive, use a web  
browser to access the following web page:  
From this page, click on the “Verify Your Warranty” link. You will  
be asked to provide the drive serial number, model number (or  
part number) and country of purchase. The system will display  
the warranty information for your drive.  
Contact start-stop cycles  
50,000  
(25°C, 50% relative humidity)  
Supports hotplug operation per Serial ATA Revision 2.5 specification Yes  
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment  
and formatting.  
**During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and  
power to operational levels..  
DB35.2 Serial ATA Product Manual, Rev. C  
5
                   
Table 2:  
Drive specifications for 300, 250 and 200 Gbyte models  
Drive specification  
ST3300822SCE  
ST3250824SCE  
ST3200827SCE  
Formatted Gbytes (512 bytes/sector)*  
Guaranteed sectors  
300  
250  
200  
586,072,368  
512  
488,397,168  
390,721,968  
Bytes per sector  
Default sectors per track  
63  
Default read/write heads  
16  
Default cylinders  
16,383  
790.1  
124.5  
97.69  
7,200  
867.2  
76.6  
Recording density in BPI (kbits/inch max)  
Track density TPI (ktracks/inch avg)  
2
Areal density (Gbits/inch avg)  
Spindle speed (RPM)  
Internal data transfer rate (Mbits/sec max)  
Sustained transfer rate (Mbytes/sec max)  
I/O data transfer rate (Mbytes/sec max)  
ATA data-transfer modes supported  
300  
PIO modes 0–4  
Multiword DMA modes 0–2  
Ultra DMA modes 0–6  
SATA data-transfer modes supported  
3.0 Gbits/sec  
1.5 Gbits/sec  
Cache buffer  
8 Mbytes  
Height (max)  
26.1 mm (1.028 inches)  
101.6 mm (4.000 inches) +/-0.010 inches  
146.99 mm (5.787 inches)  
Width (max)  
Length (max)  
Weight (max) grams  
655 grams (1.44 lb.)  
4.16  
580 grams (1.28 lb.)  
Average latency (msec)  
Power-on to ready (typical)  
Standby to ready (typical)  
Track-to-track seek time (msec typical)  
Average seek (msec typical)  
Startup current (typical) 12V (peak)  
Seek power (typical)  
16 sec  
16 sec  
<0.8 (read), <1.0 (write)  
18 (read), 20 (write)  
2.0 amps  
12.60 watts  
9.20 watts  
Operating (Consumer Storage Profile)  
Operating (PVR Storage Profile)  
Idle mode (typical)  
4.88 watts  
8.00 watts  
Standby mode (typical)  
Sleep mode (typical)  
0.800 watts  
0.800 watts  
Voltage tolerance  
(including noise)  
5V ± 5%  
12V ± 10%  
Ambient temperature  
0° to 60°C (operating)  
–40° to 70°C (nonoperating)  
Temperature gradient  
(°C per hour max)  
20°C (operating)  
30°C (nonoperating)  
Relative humidity  
5% to 90% (operating)  
5% to 95% (nonoperating)  
Relative humidity gradient  
30% per hour max  
Wet bulb temperature  
(°C max)  
37.7 (operating)  
40 (nonoperating)  
Altitude, operating  
–60.96 m to 3,048 m  
(–200 ft to 10,000+ ft)  
6
DB35.2 Serial ATA Product Manual, Rev. C  
                                                                                               
Table 2:  
Drive specifications for 300, 250 and 200 Gbyte models  
Drive specification  
ST3300822SCE  
ST3250824SCE  
ST3200827SCE  
Altitude, nonoperating  
(meters below mean sea level, max)  
–60.96 m to 12,192 m  
(–200 ft to 40,000+ ft)  
Shock, operating (max at 2 msec)  
Shock, nonoperating (max at 2 msec)  
Vibration, operating  
63 Gs  
350 Gs  
5-22 Hz: +/-0.25”, Displacement limited  
22-350 Hz: 0.5 Gs  
350-500 Hz: 0.25 Gs  
Vibration, nonoperating  
5-22 Hz: +/-0.25”, Displacement limited  
22-350 Hz: 5.0 Gs  
350-500 Hz: 1.0 Gs  
Drive acoustics, sound power (bels)  
Idle** (bels)  
2.67 (typical)  
2.82 (max)  
Operational, CE seeks (bels)  
Operational, PVR seeks (bels)  
2.80 (typical)  
2.90 (max)  
2.68 (typical)  
2.80 (max)  
14  
Nonrecoverable read errors  
Annualized Failure Rate (AFR)  
Warranty  
1 per 10 bits read  
0.70%  
5 years on distribution units.  
To determine the warranty for a specific drive, use a web browser to access  
the following web page:  
From this page, click on the “Verify Your Warranty” link. You will be asked  
to provide the drive serial number, model number (or part number) and  
country of purchase. The system will display the warranty information for  
your drive.  
Contact start-stop cycles  
50,000  
(25°C, 50% relative humidity)  
Supports hotplug operation per Serial ATA Revision 2.5  
specification  
Yes  
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment  
and formatting.  
**During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and  
power to operational levels.  
DB35.2 Serial ATA Product Manual, Rev. C  
7
                         
Table 3:  
Drive specifications for 160, 120, and 80 Gbyte models  
Drive specification  
ST3160212SCE  
ST3120213SCE  
ST3802110SCE  
Formatted Gbytes (512 bytes/sector)*  
Guaranteed sectors  
160  
120  
80  
312,581,808  
512  
234,441,648  
156,301,488  
Bytes per sector  
Default sectors per track  
63  
Default read/write heads  
16  
Default cylinders  
16,383  
840.0  
141.5  
119.0  
7,200  
867.2  
83.0  
Recording density in BPI (kbits/inch max)  
Track density TPI (ktracks/inch avg)  
2
Areal density (Gbits/inch avg)  
Spindle speed (RPM)  
Internal data transfer rate (Mbits/sec max)  
Sustained transfer rate (Mbytes/sec max)  
I/O data transfer rate (Mbytes/sec max)  
ATA data-transfer modes supported  
300  
PIO modes 0–4  
Multiword DMA modes 0–2  
Ultra DMA modes 0–6  
SATA data-transfer modes supported  
3.0 Gbits/sec  
1.5 Gbits/sec  
Cache buffer  
2 Mbytes  
Height (max)  
26.1 mm (1.028 inches)  
101.6 mm (4.000 inches) +/-0.010 inches  
146.99 mm (5.787 inches)  
580 grams (1.28 lb.)  
4.16  
Width (max)  
Length (max)  
Weight (typical)  
Average latency (msec)  
Power-on to ready (typical)  
Standby to ready (typical)  
Track-to-track seek time (msec typical)  
Average seek (msec typical)  
Startup current (typical) 12V (peak)  
Seek power (typical)  
16 secs  
16 secs  
<0.8 (read), <1.0 (write)  
18 (read), 20 (write)  
2.0 amps  
12.40 watts  
Operating (Consumer Storage Profile)  
Operating (PVR Profile)  
Idle mode (typical)  
9.25 watts  
4.91 watts  
5.25 watts  
8.00 watts  
Standby mode (typical)  
Sleep mode (typical)  
0.800 watts  
0.800 watts  
Voltage tolerance  
(including noise)  
5V ± 5%  
12V ± 10%  
Ambient temperature  
0° to 60°C (operating)  
–40° to 70°C (nonoperating)  
Temperature gradient  
(°C per hour max)  
20°C (operating)  
30°C (nonoperating)  
Relative humidity  
5% to 90% (operating)  
5% to 95% (nonoperating)  
Relative humidity gradient  
30% per hour max  
Wet bulb temperature  
(°C max)  
37.7 (operating)  
40 (nonoperating)  
Altitude, operating  
–60.96 m to 3,048 m  
(–200 ft to 10,000+ ft)  
8
DB35.2 Serial ATA Product Manual, Rev. C  
                                                                                               
Table 3:  
Drive specifications for 160, 120, and 80 Gbyte models  
Drive specification  
ST3160212SCE  
ST3120213SCE  
ST3802110SCE  
Altitude, nonoperating  
(meters below mean sea level, max)  
–60.96 m to 12,192 m  
(–200 ft to 40,000+ ft)  
Shock, operating (max at 2 msec)  
Shock, nonoperating (max at 2 msec)  
Vibration, operating  
63 Gs  
350 Gs  
5-22 Hz: 0.25 Gs, Limited displacement  
22-350 Hz: 0.5 Gs  
350-500 Hz: 0.25 Gs  
Vibration, nonoperating  
5-22 Hz: 0.25 Gs, Limited displacement  
23-350 Hz: 5.0 Gs  
351-500 Hz: 1.0 Gs  
Drive acoustics, sound power (bels)  
Idle** (bels)  
2.48 (typical)  
2.64 (max)  
2.46 (typical  
2.65 (max)  
2.43 (typical  
2.51 (max)  
Operational, CE seeks (bels)  
Operational, PVR seeks (bels)  
2.65 (typical)  
2.95 (max)  
2.57 (typical  
2.64 (max)  
2.61 (typical)  
2.63 (max)  
2.53 (typical)  
2.62 (max)  
2.50 (typical  
2.57 (max)  
2.45 (typical)  
2.51 (max)  
14  
Nonrecoverable read errors  
Annualized Failure Rate (AFR)  
Warranty  
1 per 10 bits read  
0.70%  
5 years on distribution units.  
To determine the warranty for a specific drive, use a web browser to  
access the following web page:  
From this page, click on the “Verify Your Warranty” link. You will be  
asked to provide the drive serial number, model number (or part num-  
ber) and country of purchase. The system will display the warranty infor-  
mation for your drive.  
Contact start-stop cycles  
(25°C, 50% relative humidity)  
50,000  
Yes  
Supports hotplug operation per Serial ATA Revision 2.5  
specification  
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment  
and formatting.  
**During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and  
power to operational levels.  
DB35.2 Serial ATA Product Manual, Rev. C  
9
                         
2.2  
Formatted capacity  
Model  
Formatted capacity*  
Guaranteed sectors  
976,773,168  
781,422,768  
586,072,368  
488,397,168  
390,721,968  
312,581,808  
234,441,648  
156,301,488  
Bytes per sector  
ST3500841SCE  
ST3400833SCE  
ST3300822SCE  
ST3250824SCE  
ST3200827SCE  
ST3160212SCE  
ST3120213SCE  
ST3802110SCE  
500 Gbytes  
400 Gbytes  
300 Gbytes  
250 Gbytes  
200 Gbytes  
160 Gbytes  
120 Gbytes  
80 Gbytes  
512  
512  
512  
512  
512  
512  
512  
512  
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment  
and formatting.  
2.2.1  
LBA mode  
When addressing these drives in LBA mode, all blocks (sectors) are consecutively numbered from 0 to n–1,  
where n is the number of guaranteed sectors as defined above.  
See Section 4.3.1, "Identify Device command" (words 60-61 and 100-103) for additional information about 48-  
bit addressing support of drives with capacities over 137 Gbytes.  
2.3  
Default logical geometry  
Cylinders  
Read/write heads  
Sectors per track  
63  
16,383  
16  
LBA mode  
When addressing these drives in LBA mode, all blocks (sectors) are consecutively numbered from 0 to n–1,  
where n is the number of guaranteed sectors as defined above.  
2.4  
Recording and interface technology  
Interface  
ATA  
Recording method  
16/17 EPRML  
Recording density KBPI (kbits/inch max)  
ST3500841SCE, ST3400833SCE, ST3300822SCE,  
ST3250824SCE, ST3200827SCE  
790.1  
840.0  
ST3160212SCE, ST3120213SCE, ST3802110SCE  
Track density KTPI (ktracks/inch max)  
ST3500841SCE, ST3400833SCE, ST3300822SCE,  
ST3250824SCE, ST3200827SCE  
124.5  
141.5  
ST3160212SCE, ST3120213SCE, ST3802110SCE  
2
Areal density (Gbits/inch max)  
ST3500841SCE, ST3400833SCE, ST3300822SCE,  
ST3250824SCE, ST3200827SCE  
97.69  
10  
DB35.2 Serial ATA Product Manual, Rev. C  
                                                         
ST3160212SCE, ST3120213SCE, ST3802110SCE  
Spindle speed (RPM) (± 0.2%)  
119.0  
7,200  
Internal data-transfer rate (Mbits/sec max)  
ST3500841SCE, ST3400833SCE  
815.2  
867.2  
ST3300822SCE, ST3250824SCE, ST3200827SCE,  
ST3160212SCE, ST3120213SCE, ST3802110SCE  
Sustained data transfer rate (Mbytes/sec max)  
ST3500841SCE, ST3400833SCE  
65.0  
76.6  
83.0  
300  
ST3300822SCE, ST3250824SCE, ST3200827SCE  
ST3160212SCE, ST3120213SCE, ST3802110SCE  
I/O data-transfer rate (Mbytes/sec max)  
Cache buffer  
ST3500841SCE, ST3400833SCE, ST3300822SCE,  
ST3250824SCE, ST3200827SCE  
8 Mbytes (8,192 kbytes)  
2 Mbytes (2,048 kbytes)  
ST3160212SCE, ST3120213SCE, ST3802110SCE  
DB35.2 Serial ATA Product Manual, Rev. C  
11  
         
2.5  
Physical characteristics  
Drive specification  
Maximum height  
(mm)  
26.1  
1.028  
(inches)  
Maximum width  
(mm)  
101.6  
4.000 +/- 0.010  
(inches)  
Maximum length  
(mm)  
146.99  
5.787  
(inches)  
Maximum weight  
ST3500841SCE  
710 grams (1.57 lbs)  
ST3400833SCE  
ST3300822SCE  
655 grams (1.44 lbs)  
580 grams (1.28 lbs)  
ST3250824SCE  
ST3200827SCE  
ST3160212SCE  
ST3120213SCE  
ST3802110SCE  
2.6  
Seek time  
Seek measurements are taken with nominal power at 25°C ambient temperature. All times are measured using  
drive diagnostics. The specifications 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.  
Typical seek times (msec)  
Track-to-track  
Read  
0.8  
Write  
1.0  
Average  
18  
20  
Average latency:  
4.16  
4.16  
Note. These drives are designed to consistently meet the seek times represented 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 formatted, benchmark  
tests that include command overhead or measure logical seeks may produce results that vary from  
these specifications.  
12  
DB35.2 Serial ATA Product Manual, Rev. C  
                             
2.7  
Start/stop times  
Power-on to Ready (sec)  
16  
Standby to Ready (sec)  
16 (max)  
10 (max)  
Ready to spindle stop (sec)  
2.8  
Power specifications  
The drive receives DC power (+5V and +12V) through a native SATA power connector. See Figure 5 on  
2.8.1  
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 and 12.0V 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 represents 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.  
• Operating power and current  
Operating power is measured using a standrad Consumer Storage Profile.  
• 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.  
DB35.2 Serial ATA Product Manual, Rev. C  
13  
                                                       
Table 4:  
DC power requirements  
Power dissipation (typical)  
Example: ST3500841SCE  
Average (watts, 25° C)  
5V typ amps  
12V typ amps  
2.0 (peak)  
0.519  
Spinup  
Idle  
8.00  
9.20  
4.88  
12.60  
0.80  
0.80  
0.353  
0.587  
0.39  
Operating (Consumer Storage Profile)  
0.520  
Operating (PVR Storage Profile)  
0.41  
Seeking  
Standby  
Sleep  
0.613  
0.106  
0.106  
0.795  
0.023  
0.023  
2.8.1.1  
Typical current profiles  
Figure 1. Typical 5V startup and operation current profile  
Figure 2. Typical 12V startup and operation current profile  
14  
DB35.2 Serial ATA Product Manual, Rev. C  
                 
2.8.2  
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 voltage by the typical RMS read/write  
current.  
2.8.3  
Voltage tolerance  
Voltage tolerance (including noise):  
5V ± 5%  
12V ± 10%  
2.8.4  
Power-management modes  
The drive provides programmable power management to provide greater energy efficiency. In most systems,  
you can control power management through the system setup program. The drive features the following  
power-management modes:  
Power modes  
Active  
Heads  
Spindle  
Rotating  
Rotating  
Stopped  
Stopped  
Buffer  
Tracking  
Tracking  
Parked  
Parked  
Enabled  
Enabled  
Enabled  
Disabled  
Idle  
Standby  
Sleep  
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 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  
DB35.2 Serial ATA Product Manual, Rev. C  
15  
                                           
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.  
2.9  
Environmental specifications  
Ambient temperature  
2.9.1  
Ambient temperature is defined as the temperature of the environment immediately surrounding the drive.  
Actual drive case temperature should not exceed 69°C (156°F) within the operating ambient conditions for  
standard models. Recommended measurement locations are shown in Figure 6.  
Above 1,000 feet (305 meters), the maximum temperature is derated linearly to 44°C (112°F) at 10,000 feet  
(3,048 meters).  
Operating:  
0° to 60°C (32° to 140°F)  
Nonoperating:  
–40° to 70°C (–40° to 158°F)  
2.9.2  
Temperature gradient  
Operating:  
20°C per hour (68°F per hour max), without condensation  
30°C per hour (86°F per hour max)  
Nonoperating:  
2.9.3  
2.9.3.1  
Humidity  
Relative humidity  
Operating:  
Nonoperating:  
5% to 90% noncondensing (30% per hour max)  
5% to 95% noncondensing (30% per hour max)  
2.9.3.2  
Wet bulb temperature  
Operating:  
37.7°C (99.9°F max)  
40°C (104°F max)  
Nonoperating:  
2.9.4  
Altitude  
Operating:  
–60.96 m to 3,048 m (–200 ft. to 10,000+ ft.)  
–60.96 m to 12,192 m (–200 ft. to 40,000+ ft.)  
Nonoperating:  
2.9.5  
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.  
2.9.5.1  
Operating shock  
These drives comply with the performance levels specified in this document 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.  
16  
DB35.2 Serial ATA Product Manual, Rev. C  
                                       
2.9.5.2  
Nonoperating shock  
The nonoperating shock level that the drive can experience without incurring physical damage or degradation  
in performance when subsequently put into operation is 300 Gs for 500, 400, and 300 GB drives and 350 Gs  
for 250, 200, 160, ad 80 GB drives, based on a nonrepetitive half-sine shock pulse of 2 msec duration.  
2.9.6  
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.  
2.9.6.1  
Operating vibration  
The maximum vibration levels that the drive may experience while meeting the performance standards speci-  
fied in this document are specified below.  
5–22 Hz  
+/-0.25”, Displacement limited  
22–350 Hz  
350–500 Hz  
0.50 Gs  
0.25 Gs  
2.9.6.2  
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.  
5–22 Hz  
0.25 G (Limited displacement)  
22–350 Hz  
350–500 Hz  
5.0 Gs  
1.0 Gs  
2.10  
Acoustics  
Drive acoustics are measured as overall A-weighted acoustic sound power levels (no pure tones). All mea-  
surements are consistent with ISO document 7779. Sound power measurements are taken under essentially  
free-field conditions over a reflecting plane. For all tests, the drive is oriented with the cover facing upward.  
Note. For seek mode tests, the drive is 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)  
Drive acoustics, sound power  
Idle  
Operational, CE seeks  
Operational, PVR (Personal Video Recorder) seeks  
2.46 bels (typ)  
2.65 bels (max)  
2.57 bels (typ)  
2.64 bels (max)  
2.50 bels (typ)  
2.57 bels (max)  
DB35.2 Serial ATA Product Manual, Rev. C  
17  
                     
2.11  
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:  
Table 5:  
Radio frequency environments  
Performance  
level  
Reference  
standard  
Test  
Description  
Electrostatic discharge  
Radiated RF immunity  
Contact, HCP, VCP: ± 4 kV; Air:  
± 8 kV  
B
EN 61000-4-2: 95  
80 to 1,000 MHz, 3 V/m,  
80% AM with 1 kHz sine  
900 MHz, 3 V/m, 50% pulse  
modulation @ 200 Hz  
A
EN 61000-4-3: 96  
ENV 50204: 95  
Electrical fast transient  
Surge immunity  
± 1 kV on AC mains, ± 0.5 kV on  
external I/O  
B
B
A
EN 61000-4-4: 95  
EN 61000-4-5: 95  
EN 61000-4-6: 97  
EN 61000-4-11: 94  
± 1 kV differential, ± 2 kV com-  
mon, AC mains  
Conducted RF immunity  
Voltage dips, interrupts  
150 kHz to 80 MHz, 3 Vrms,  
80% AM with 1 kHz sine  
0% open, 5 seconds  
0% short, 5 seconds  
40%, 0.10 seconds  
70%, 0.01 seconds  
C
C
C
B
2.12  
Reliability  
14  
Nonrecoverable read errors  
Annualized Failure Rate (AFR)  
Contact start-stop cycles  
1 per 10 bits read, max  
0.70% (nominal power, 25°C ambient temperature)  
50,000 cycles  
(at nominal voltage and temperature, with 60 cycles per hour and a 50% duty cycle)  
Preventive maintenance  
None required  
18  
DB35.2 Serial ATA Product Manual, Rev. C  
                                       
2.13  
Agency certification  
Safety certification  
2.13.1  
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.  
2.13.2  
Electromagnetic compatibility  
Hard drives that display the CE mark comply with the European Union (EU) requirements specified in the Elec-  
tromagnetic Compatibility Directive (89/336/EEC). Testing is performed to the levels specified by the product  
standards for Information Technology Equipment (ITE). Emission 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 properly 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.  
Korean RRL  
If these drives have the Korea Ministry of Information and Communication (MIC) logo, they comply with para-  
graph 1 of Article 11 of the Electromagnetic Compatibility control Regulation and meet the Electromagnetic  
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 Susceptibil-  
ity (EMI/EMS) for Class B products. Drives are tested in a representative, end-user system by a Korean-recog-  
nized lab.  
• EUT name (model numbers): See table below.  
• Certificate numbers:  
Model  
Certificate Number  
E-H011-05-3453 (B)  
E-H011-05-3453 (B)  
E-H011-05-3453 (B)  
E-H011-05-3453 (B)  
E-H011-05-3453 (B)  
E-H011-05-3453 (B)  
E-H011-05-3453 (B)  
E-H011-05-3453 (B)  
ST3500841SCE  
ST3400833SCE  
ST3300822SCE  
ST3250824SCE  
ST3200827SCE  
ST3160212SCE  
ST3120213SCE  
ST3802110SCE  
• Trade name or applicant: Seagate Technology  
• Manufacturing date: January 2006  
• Manufacturer/nationality: Singapore and China  
DB35.2 Serial ATA Product Manual, Rev. C  
19  
                                                     
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 Electromagnetic Compatibility (EMC) Framework requirements of the Australian Communi-  
cation Authority (ACA).  
2.13.3  
FCC verification  
These drives are intended to be contained solely within a personal computer or similar enclosure (not attached  
as an external device). As such, each drive is considered to be a subassembly even when it is individually mar-  
keted 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 interference to radio  
and television reception.  
This equipment is designed to provide reasonable protection against such interference in a residential installa-  
tion. 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 sug-  
gestions. You may find helpful the following booklet prepared by the Federal Communications Commission:  
How to Identify and Resolve Radio-Television Interference Problems. This booklet is available from the Super-  
intendent of Documents, U.S. Government Printing Office, Washington, DC 20402. Refer to publication num-  
ber 004-000-00345-4.  
2.14  
Environmental protection  
Seagate designs its products to meet environmental protection requirements worldwide, including regulations  
restricting certain chemical substances.  
2.14.1  
European Union Restriction of Hazardous Substances (RoHS)  
The European Union Restriction of Hazardous Substances (RoHS) Directive restricts the presence of chemical  
substances, including Lead (Pb), in electronic products effective July 2006.  
A number of parts and materials in Seagate products are procured from external suppliers. We rely on the  
rep-resentations of our suppliers regarding the presence of RoHS substances in these parts and materials. Our  
supplier contracts require compliance with our chemical substance restrictions, and our suppliers document  
their compliance with our requirements by providing material content declarations for all parts and materials for  
the disc drives documented in this publication. Current supplier declarations include disclosure of the inclusion  
of any RoHS-regulated substance in such parts or materials.  
20  
DB35.2 Serial ATA Product Manual, Rev. C  
                             
Seagate also has internal systems in place to ensure ongoing compliance with the RoHS Directive and all laws  
and regulations which restrict chemical content in electronic products. These systems include standard  
operat-ing procedures that ensure that restricted substances are not utilized in our manufacturing operations,  
labora-tory analytical validation testing, and an internal auditing process to ensure that all standard operating  
procedures are complied with.  
2.15  
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 corro-  
sive chemicals as electronic drive component reliability can be affected by the installation environment. The sil-  
ver, 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 vulca-  
nized 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.  
DB35.2 Serial ATA Product Manual, Rev. C  
21  
           
22  
DB35.2 Serial ATA Product Manual, Rev. C  
3.0  
Configuring and mounting the drive  
This section contains the specifications and instructions for configuring and mounting the drive.  
3.1  
Handling and static-discharge precautions  
After unpacking, and before installation, the drive may be exposed to potential handling and electrostatic dis-  
charge (ESD) hazards. Observe the following standard handling and static-discharge precautions:  
Caution:  
• Keep the drive in the electrostatic discharge (ESG) bag until you are ready for installation.  
• 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.  
DB35.2 Serial ATA Product Manual, Rev. C  
23  
                   
3.2  
Breather filter hole precautions  
This section contains information regarding the precautions to take with the breather filter hole in Seagate hard  
disc drives. Take the proper precautions to ensure full functionality and to prevent possible damage to the  
drive.  
Breather hole  
Do not cover or seal  
this hole.  
Figure 3. Breather filter hole location  
Caution: Do not cover, seal, or insert any object into this hole.  
This hole has two purposes:  
• To allow condensation inside the hard disc to escape  
• To allow air pressure inside the hard disc to equalize with ambient pressure  
Note. If this hole is covered, sealed, or penetrated by any object, drive reliability may be compromised  
and could lead to permanent damage--doing so voids the warranty.  
24  
DB35.2 Serial ATA Product Manual, Rev. C  
   
3.3  
Configuring the drive  
Each drive on the Serial ATA interface connects in a point-to-point configuration with the Serial ATA host  
adapter. There is no master/slave relationship because each drive is considered a master in a point-to-point  
relationships. If two drives are attached on one Serial ATA host adapter, the host operating system views the  
two devices as if they were both “masters” on two separate ports. This means both drives behave as if they are  
Device 0 (master) devices.  
Serial ATA drives are designed for easy installation. It is usually not necessary to set any jumpers on the drive  
for proper operation; however, if you connect the drive and receive a “drive not detected” error, your SATA-  
equipped motherboard or host adapter may use a chipset that does not support SATA speed autonegotiation. If  
you have a motherboard or host adapter that does not support autonegotiation:  
• Install a jumper as shown in Figure 4 below to limit the data transfer rate to 1.5 Gbits per second (and leave  
the drive connected to the SATA-equipped motherboard or host adapter that doesn’t support autonegotiation)  
or  
• Install a SATA host adapter that supports autonegotiation, leave the drive jumper block set to “Normal  
operation” (see Figure 4 below), and connect the drive to that adapter. This option has the benefit of not limiting  
the drive to a 1.5 Gbits/sec transfer rate.  
Normal operation  
Limit data transfer rate to  
1.5 Gbits per second  
Jumper block  
SATA interface connector  
Figure 4. Serial ATA jumper block and connectors  
SATA power connector  
3.4  
Serial ATA cables and connectors  
The Serial ATA interface cable consists of four conductors in two differential pairs, plus three ground connec-  
tions. The cable size may be 30 to 26 AWG with a maximum length of one meter (39.37 inches). See Table 6  
for connector pin definitions. Either end of the SATA signal cable can be attached to the drive or host.  
For direct backplane connection, the drive connectors are inserted directly into the host receptacle. The drive  
and the host receptacle incorporate features that enable the direct connection to be hot pluggable and blind  
mateable.  
For installations which require cables, you can connect the drive as illustrated in Figure 5.  
Signal connector  
Power connector  
Signal cable  
Power cable  
Figure 5. Attaching SATA cabling  
Each cable is keyed to ensure correct orientation. DB35.2 Serial ATA drives support latching SATA connectors.  
DB35.2 Serial ATA Product Manual, Rev. C  
25  
             
3.5  
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 6 on page 26 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.  
• The screws should be inserted no more than 0.150 inch (3.81 mm) into the bottom or side mounting holes.  
• Do not overtighten the mounting screws (maximum torque: 6 inch-lb).  
Recommended  
case temperature  
measurement location  
[1]  
5.787 (146.9898) max.  
.250 + .015  
(6.35 + .381)  
(3x both sides)  
1.638  
(41.605)  
1.122  
+ .020  
(28.499  
+ .508)  
[1]  
[1]  
4.000  
(101.6)  
[1]  
4.000  
(101.6)  
1.028 max  
(26.111 max)  
[1]  
.138  
(3.505)  
.814  
(20.676)  
C of conn. Datum B  
L
2.00  
Notes:  
(50.80)  
Dimensions are shown in inches (mm).  
[1] Dimensions per SFF-8301 specification  
C of drive  
L
[1]  
2 x 3.750  
(2 x 95.25)  
2 x 1.625  
(2 x 41.28)  
[1]  
[1]  
2 x 1.750  
(2 x 44.45)  
4.000  
(101.6)  
[1]  
Recommended  
case temperature  
measurement location  
Figure 6. Mounting dimensions—top, side and end view  
26  
DB35.2 Serial ATA Product Manual, Rev. C  
       
4.0  
Serial ATA (SATA) interface  
These drives use the industry-standard Serial ATA interface that supports FIS data transfers. It supports ATA  
programmed input/output (PIO) modes 0–4; multiword DMA modes 0–2, and Ultra DMA modes 0–6.  
For detailed information about the Serial ATA interface, refer to the “Serial ATA: High Speed Serialized AT  
Attachment” specification.  
4.1  
Hot-Plug compatibility  
DB35.2 Serial ATA drives incorporate connectors which enable you to hot plug these drives in accordance with  
the Serial ATA II: Extension to Serial ATA 1.0a specification. This specification can be downloaded from  
DB35.2 Serial ATA Product Manual, Rev. C  
27  
         
4.2  
Serial ATA device plug connector pin definitions  
Table 6 summarizes the signals on the Serial ATA interface and power connectors..  
Table 6: Serial ATA connector pin definitions  
Segment Pin  
Function  
Ground  
A+  
Definition  
S1  
S2  
S3  
S4  
S5  
S6  
2nd mate  
Differential signal pair A from Phy  
A-  
Ground  
B-  
2nd mate  
Differential signal pair B from Phy  
B+  
Signal  
S7  
Ground  
2nd mate  
Key and spacing separate signal and power segments  
P1  
V33  
3.3V power  
P2  
V33  
3.3V power  
P3  
V33  
3.3V power, pre-charge, 2nd mate  
1st mate  
P4  
Ground  
Ground  
Ground  
V5  
P5  
2nd mate  
P6  
2nd mate  
P7  
5V power, pre-charge, 2nd mate  
5V power  
P8  
V5  
Power  
P9  
V5  
5V power  
P10  
P11  
P12  
P13  
P14  
P15  
Ground  
2nd mate  
Ground or LED signal If grounded, drive does not use deferred spin  
Ground  
V12  
1st mate.  
12V power, pre-charge, 2nd mate  
12V power  
V12  
V12  
12V power  
Notes:  
1. All pins are in a single row, with a 1.27 mm (0.050”) pitch.  
2. The comments on the mating sequence apply to the case of backplane blindmate connector only. In this  
case, the mating sequences are:  
• the ground pins P4 and P12.  
• the pre-charge power pins and the other ground pins.  
• the signal pins and the rest of the power pins.  
3. There are three power pins for each voltage. One pin from each voltage is used for pre-charge when  
installed in a blind-mate backplane configuration.  
4. All used voltage pins (Vx) must be terminated.  
28  
DB35.2 Serial ATA Product Manual, Rev. C  
   
4.3  
Supported ATA commands  
The following table lists Serial ATA standard commands that the drive supports. For a detailed description of  
the ATA commands, refer to the Serial ATA: High Speed Serialized AT Attachment specification. See  
“S.M.A.R.T. commands” on page 35.for details and subcommands used in the S.M.A.R.T. implementation.  
Table 7:  
Supported ATA commands  
Command name  
Command code (in hex)  
98 or E5  
Check Power Mode  
Device Configuration Freeze Lock  
Device Configuration Identify  
Device Configuration Restore  
Device Configuration Set  
Device Reset  
H
H
B1 / C1  
H
H
B1 / C2  
H
H
H
H
B1 / C0  
H
B1 / C3  
H
08  
92  
90  
H
H
H
Download Microcode  
Execute Device Diagnostics  
Flush Cache  
E7  
H
Flush Cache Extended  
Format Track  
EA  
H
50  
H
Identify Device  
EC  
H
Idle  
97 or E3  
H
H
Idle Immediate  
95 or E1  
H
H
Initialize Device Parameters  
Read Buffer  
91  
H
E4  
H
Read DMA  
C8  
H
Read DMA Extended  
Read DMA Without Retries  
Read Log Ext  
25  
H
C9  
H
H
2F  
Read Multiple  
C4  
H
Read Multiple Extended  
Read Native Max Address  
Read Native Max Address Extended  
Read Sectors  
29  
H
F8  
H
H
H
H
H
H
H
H
H
27  
20  
24  
21  
40  
42  
41  
10  
Read Sectors Extended  
Read Sectors Without Retries  
Read Verify Sectors  
Read Verify Sectors Extended  
Read Verify Sectors Without Retries  
Recalibrate  
Security Disable Password  
Security Erase Prepare  
F6  
H
H
F3  
DB35.2 Serial ATA Product Manual, Rev. C  
29  
                                                                         
Command name  
Security Erase Unit  
Security Freeze  
Security Set Password  
Security Unlock  
Seek  
Command code (in hex)  
F4  
F5  
F1  
F2  
H
H
H
H
H
70  
Set Features  
EF  
H
Set Max Address  
F9  
H
Note: Individual Set Max Address  
commands are identified by the value  
placed in the Set Max Features regis-  
ter as defined to the right.  
Address:  
Password:  
Lock:  
00  
01  
02  
03  
04  
H
H
H
H
H
Unlock:  
Freeze Lock:  
Set Max Address Extended  
Set Multiple Mode  
37  
H
C6  
H
Sleep  
99 or E6  
H
H
S.M.A.R.T. Disable Operations  
S.M.A.R.T. Enable/Disable Autosave  
S.M.A.R.T. Enable Operations  
S.M.A.R.T. Execute Offline  
S.M.A.R.T. Read Attribute Thresholds  
S.M.A.R.T. Read Data  
S.M.A.R.T. Read Log Sector  
S.M.A.R.T. Return Status  
S.M.A.R.T. Save Attribute Values  
S.M.A.R.T. Write Log Sector  
Standby  
B0 / D9  
H
H
B0 / D2  
H
H
H
H
H
H
H
B0 / D8  
H
B0 / D4  
H
B0 / D1  
H
B0 / D0  
H
B0 / D5  
H
B0 / DA  
H
H
H
H
B0 / D3  
H
B0 / D6  
H
96 or E2  
H
H
H
Standby Immediate  
94 or E0  
H
Write Buffer  
E8  
H
Write DMA  
CA  
H
Write DMA Extended  
35  
H
Write DMA FUA Extended  
Write DMA Without Retries  
Write Log Extended  
CD  
H
H
CB  
3F  
H
Write Multiple  
C5  
H
Write Multiple Extended  
Write Multiple FUA Extended  
Write Sectors  
39  
H
CE  
H
30  
31  
34  
H
Write Sectors Without Retries  
Write Sectors Extended  
H
H
30  
DB35.2 Serial ATA Product Manual, Rev. C  
                                                                   
4.3.1  
Identify Device command  
The Identify Device command (command code EC ) transfers information about the drive to the host following  
H
power up. The data is organized as a single 512-byte block of data, whose contents are shown in Table 7 on  
page 29. 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 2.0 on page 3 for default parameter settings.  
The following commands contain drive-specific features that may not be included in the Serial ATA specifica-  
tion.  
Word  
Description  
Value  
0C5A  
Configuration information:  
• Bit 15: 0 = ATA; 1 = ATAPI  
• Bit 7: removable media  
• Bit 6: removable controller  
• Bit 0: reserved  
H
0
1
Number of logical cylinders  
16,383  
2
ATA-reserved  
0000  
H
3
Number of logical heads  
16  
4
Retired  
0000  
0000  
H
5
Retired  
H
6
Number of logical sectors per logical track: 63  
Retired  
003F  
H
H
7–9  
10–19  
20  
0000  
Serial number: (20 ASCII characters, 0000 = none)  
ASCII  
H
Retired  
Retired  
Obsolete  
0000  
0400  
0000  
x.xx  
H
H
H
21  
22  
23–26  
Firmware revision (8 ASCII character string, padded with blanks to end  
of string)  
27–46  
Drive model number: (40 ASCII characters, padded with blanks to end  
of string)  
ST3500841SCE  
ST3400833SCE  
ST3300822SCE  
ST3250824SCE  
ST3200827SCE  
ST3160212SCE  
ST3120213SCE  
ST3802110SCE  
47  
(Bits 7–0) Maximum sectors per interrupt on Read multiple and Write  
multiple (16)  
8010  
H
48  
49  
50  
51  
52  
53  
54  
55  
56  
Reserved  
0000  
H
Standard Standby timer, IORDY supported and may be disabled  
ATA-reserved  
2F00  
H
H
H
H
H
0000  
0200  
0200  
0007  
PIO data-transfer cycle timing mode  
Retired  
Words 54–58, 64–70 and 88 are valid  
Number of current logical cylinders  
Number of current logical heads  
Number of current logical sectors per logical track  
xxxx  
xxxx  
xxxx  
H
H
H
DB35.2 Serial ATA Product Manual, Rev. C  
31  
   
Word  
57–58  
59  
Description  
Value  
Current capacity in sectors  
xxxx  
xxxx  
H
H
Number of sectors transferred during a Read Multiple or Write Multiple  
command  
60–61  
Total number of user-addressable LBA sectors available  
(see Section 2.2 for related information)  
*Note: The maximum value allowed in this field is: 0FFFFFFFh  
(268,435,455 sectors, 137 Gbytes). Drives with capacities over 137  
Gbytes will have 0FFFFFFFh in this field and the actual number of  
user-addressable LBAs specified in words 100-103. This is required for  
drives that support the 48-bit addressing feature.  
ST3500841SCE = 0FFFFFFFh*  
ST3400833SCE = 0FFFFFFFh*  
ST3300822SCE = 0FFFFFFFh*  
ST3250824SCE = 0FFFFFFFh*  
ST3200827SCE = 0FFFFFFFh*  
ST3160212SCE = 0FFFFFFFh*  
ST3120213SCE = DF94BB0h  
ST3802110SCE = 950F8B0h  
62  
63  
Retired  
0000  
H
H
Multiword DMA active and modes supported (see note following this  
table)  
xx07  
64  
65  
66  
67  
68  
Advanced PIO modes supported (modes 3 and 4 supported)  
Minimum multiword DMA transfer cycle time per word (120 nsec)  
Recommended multiword DMA transfer cycle time per word (120 nsec)  
Minimum PIO cycle time without IORDY flow control (240 nsec)  
Minimum PIO cycle time with IORDY flow control (120 nsec)  
0003  
0078  
0078  
H
H
H
00F0  
H
0078  
0000  
0000  
H
H
H
69–74  
75  
76  
77  
78  
79  
80  
81  
82  
83  
84  
85  
86  
87  
88  
89  
90  
92  
93  
ATA-reserved  
Queue depth  
Serial ATA capabilities  
xxxx  
xxxx  
xxxx  
xxxx  
H
Reserved for future Serial ATA definition  
Serial ATA features supported  
Serial ATA features enabled  
Major version number  
H
H
H
003E  
H
H
Minor version number  
0000  
Command sets supported  
Command sets supported  
Command sets support extension  
Command sets enabled  
364B  
H
7C03  
H
4003  
H
30xx  
H
Command sets enabled  
0001  
4000  
H
H
H
Command sets enable extension  
Ultra DMA support and current mode (see note following this table)  
Security erase time  
xx3F  
0000  
0000  
H
H
Enhanced security erase time  
Master password revision code  
FFFE  
H
Hardware reset value  
(see description following this table)  
xxxx  
H
95–99  
ATA-reserved  
0000  
H
32  
DB35.2 Serial ATA Product Manual, Rev. C  
Word  
Description  
Value  
100–103  
Total number of user-addressable LBA sectors available (see Section  
2.2 for related information). These words are required for drives that  
support the 48-bit addressing feature. Maximum value:  
0000FFFFFFFFFFFFh.  
ST3500841SCE = 976,773,168  
ST3400833SCE = 781,422,768  
ST3300822SCE = 586,072,368  
ST3250824SCE = 488,397,168  
ST3200827SCE = 390,721,968  
ST3160212SCE = 312,581,808  
ST3120213SCE = 234,441,648  
ST3802110SCE = 156,301,488  
104–127  
128  
ATA-reserved  
Security status  
Seagate-reserved  
ATA-reserved  
Integrity word  
0000  
H
H
0001  
129–159  
160–254  
255  
xxxx  
H
0000  
H
H
xxA5  
Note. Advanced Power Management (APM) and Automatic Acoustic Management (AAM) features are not supported  
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.  
Ultra DMA mode 3 is supported.  
Ultra DMA mode 4 is supported.  
Ultra DMA mode 5 is supported.  
Ultra DMA mode 6 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.  
Ultra DMA mode 6 is currently active.  
1
2
3
4
5
6
8
9
10  
11  
12  
13  
14  
DB35.2 Serial ATA Product Manual, Rev. C  
33  
4.3.2  
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 inter-  
rupt. 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:  
Table 8:  
Set Features command values  
02  
03  
Enable write cache (default).  
H
Set transfer mode (based on value in Sector Count register).  
Sector Count register values:  
H
00 Set PIO mode to default (PIO mode 2).  
H
01 Set PIO mode to default and disable IORDY (PIO mode 2).  
H
08 PIO mode 0  
H
09 PIO mode 1  
H
0A PIO mode 2  
H
0B PIO mode 3  
H
0C PIO mode 4 (default)  
H
20 Multiword DMA mode 0  
H
21 Multiword DMA mode 1  
H
22 Multiword DMA mode 2  
H
40 Ultra DMA mode 0  
H
41 Ultra DMA mode 1  
H
42 Ultra DMA mode 2  
H
43 Ultra DMA mode 3  
H
44 Ultra DMA mode 4  
H
45 Ultra DMA mode 5  
H
46 Ultra DMA mode 6  
H
10  
55  
82  
90  
Enable use of SATA features  
H
H
H
H
Disable read look-ahead (read cache) feature.  
Disable write cache  
Disable use of SATA features  
AA  
Enable read look-ahead (read cache) feature (default).  
Report full capacity available  
H
F1  
H
Note. At power-on, or after a hardware or software reset, the default values of the features are as indi-  
cated above.  
34  
DB35.2 Serial ATA Product Manual, Rev. C  
 
4.3.3  
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 moni-  
tors predetermined drive attributes that are susceptible to degradation over time. If self-monitoring determines  
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-5 Standard.  
SeaTools diagnostic software activates a built-in drive self-test (DST S.M.A.R.T. command for D4 ) that elimi-  
H
nates 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.  
Table 9:  
S.M.A.R.T. commands  
Code in features register  
S.M.A.R.T. command  
D0  
D2  
D3  
D4  
D5  
D6  
D8  
D9  
S.M.A.R.T. Read Data  
H
H
H
H
H
H
H
H
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)  
S.M.A.R.T. Read Log Sector  
S.M.A.R.T. Write Log Sector  
S.M.A.R.T. Enable Operations  
S.M.A.R.T. Disable Operations  
S.M.A.R.T. Return Status  
DA  
H
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.  
DB35.2 Serial ATA Product Manual, Rev. C  
35  
 
36  
DB35.2 Serial ATA Product Manual, Rev. C  
5.0  
Seagate Technology support services  
Internet  
For information regarding Seagate products and services, visit www.seagate.com. Worldwide support is  
available 24 hours daily by email for your questions.  
Presales Support:  
Technical Support:  
Warranty Support:  
mySeagate  
my.seagate.com is the industry's first Web portal designed specifically for OEMs and distributors. It provides  
self-service access to critical applications, personalized content and the tools that allow our partners to  
manage their Seagate account functions. Submit pricing requests, orders and returns through a single,  
password-protected Web interface-anytime, anywhere in the world.  
spp.seagate.com  
spp.seagate.com supports Seagate resellers with product information, program benefits and sales tools. You  
may register for customized communications that are not available on the web. These communications contain  
product launch, EOL, pricing, promotions and other channel-related information. To learn more about the  
benefits or to register, go to spp.seagate.com, any time, from anywhere in the world.  
Seagate Service Centers  
Presales Support  
Our Presales Support staff can help you determine which Seagate products are best suited for your specific  
application or computer system, as well as product availability and compatibility.  
Technical Support  
Seagate technical support is available to assist you online at support.seagate.com or through one of our call  
centers. Have your system configuration information and your “ST” model number available.  
SeaTDD(+1-405-324-3655) is a telecommunications device for the deaf (TDD). You can send questions or  
comments 24 hours daily and exchange messages with a technical support specialist during normal business  
hours for the call center in your region.  
DB35.2 Serial ATA Product Manual, Rev. C  
37  
   
Customer Service Operations  
Warranty Service  
Seagate offers worldwide customer support for Seagate products. Seagate distributors, OEMs and other direct  
customers should contact their Seagate Customer Service Operations (CSO) representative for warranty-  
related issues. Resellers or end users of drive products should contact their place of purchase or Seagate  
warranty service for assistance. Have your serial number and model or part number available.  
Data Recovery Services  
Seagate offers data recovery services for all formats and all brands of storage media. Our data recovery  
services labs are currently located throughout the world. . Additional information, including an online request  
form and data loss prevention resources, is available at http://services.seagate.com/index.aspx  
Authorized Service Centers  
Seagate Service Centers are available on a global basis for the return of defective products. Contact your  
customer support representative for the location nearest you.  
USA/Canada/Latin America support services  
For an extensive list of telephone numbers to technical support, presales and warranty service in USA/  
Canada/Latin America, including business hours, go to the "Contact Us" page on www.seagate.com.  
Global Customer Support  
Presales, Technical, and Warranty Support  
Call Center  
USA, Canada,  
and Mexico  
Toll-free  
Direct dial  
1-800-SEAGATE  
+1-405-324-4700  
Data Recovery Services  
Call Center  
Toll-free  
Direct dial  
FAX  
USA, Canada,  
and Mexico  
1-800-475-01435  
+1-905-474-2162  
1-800-475-0158  
+1-905-474-2459  
Europe, the Middle East and Africa Support Services  
For an extensive list of telephone numbers to technical support, presales and warranty service in Europe, the  
Middle East and Africa, go to the "Contact Us" page on www.seagate.com.  
Asia/Pacific Support Services  
For an extensive list of telephone numbers to technical support, presales and warranty service in Asia/Pacific,  
go to the "Contact Us" page on www.seagate.com.  
38  
DB35.2 Serial ATA Product Manual, Rev. C  
Corrosive environment 21  
CSA C22.2 (950) 19  
current 4, 6, 8  
cycles 18  
Cylinders 10  
cylinders 4, 6, 8  
Index  
A
ACA 20  
acceleration 17  
acoustics 7, 9, 17  
Active 15  
D
Active mode 15  
actuator arm 13  
AFR 18  
Agency certification 19  
altitude 16  
data-transfer rates 1  
DC power 13  
Default logical geometry 10  
Default sectors per track 4, 6, 8  
density 4, 6, 8, 10  
Device Configuration Freeze Lock 29  
Device Configuration Identify 29  
Device Configuration Restore 29  
Device Configuration Set 29  
Device Reset 29  
Altitude, nonoperating 5, 7, 9  
Altitude, operating 4, 6, 8  
Ambient temperature 4, 6, 8, 16  
ambient temperature 12, 13  
Annualized Failure Rate (AFR) 5, 7, 9, 18  
Areal density 4, 6, 8  
dimensions 26  
disc surface 13  
displacement 17  
areal density 10  
ATA commands 29  
ATA data-transfer modes supported 4, 6, 8  
Australia/New Zealand Standard AS/NZS3548 1995  
Australian Communication Authority (ACA) 20  
Australian C-Tick 20  
Average latency 12  
Average seek time 12  
Average seek, read 4, 6, 8  
Download Microcode 29  
E
ead/write heads 4, 6, 8  
Electrical fast transient 18  
Electromagnetic compatibility 19  
Electromagnetic Compatibility (EMC) 19  
Electromagnetic Compatibility control Regulation 19  
Electromagnetic Compatibility Directive (89/336/EEC)  
Electromagnetic immunity 18  
Electrostatic discharge 18  
electrostatic discharge (ESD) 23  
EN 55022, Class B 19  
B
bels 7, 9  
BPI 4, 6, 8, 10  
buffer 4, 6, 8, 11  
Bytes per sector 4, 6, 8, 10  
EN 55024 19  
C
EN 60950 19  
Environmental protection 20  
Environmental specifications 16  
EPRML 10  
error-correction algorithms 1  
errors 5, 7, 9, 18  
ESD 23  
cables and connectors 25  
Cache 4, 6, 8  
cache 11  
capacity 10  
case temperature 16  
CE mark 19  
certification 19  
European Union (EU) requirements 19  
European Union Restriction of Hazardous Substanc-  
Check Power Mode 29  
chemical pollutants 21  
chemical substances 20  
Class B computing device 20  
compatibility 19  
Conducted noise 15  
Conducted RF immunity 18  
Configuring the drive 23  
connectors 25  
Execute Device Diagnostics 29  
F
FCC verification 20  
features 1  
Federal Communications Commission 20  
Flush Cache 29  
corrosive chemicals 21  
DB35.2 Serial ATA Product Manual, Rev. C  
39  
Flush Cache Extended 29  
Format Track 29  
Formatted capacity 10  
Formatted Gbytes 4, 6, 8  
M
maintenance 18  
master/slave 2  
maximum temperature 16  
MIC 19  
G
mounting 26  
Gbytes 10  
geometry 10  
mounting screws 16  
mounting the drive 23  
gradient 4, 6, 8  
Guaranteed sectors 4, 6, 8, 10  
guaranteed sectors 10  
N
noise 15  
nominal power 12  
Nonoperating shock 17  
Nonoperating vibration 17  
Nonrecoverable read errors 5, 7, 9, 18  
H
Handling precautions 23  
heads 4, 6, 8, 10  
Height 4, 6, 8  
height 12  
humidity 4, 6, 8, 16  
O
Operating 14  
Operating power 4, 6, 8, 13  
Operating shock 16  
Operating vibration 17  
I
I/O data-transfer rate 4, 6, 8, 11  
Identify Device 29  
P
Identify Device command 31  
Idle 14, 15, 29  
Idle Immediate 29  
Idle mode 4, 6, 8, 13, 15  
IEC950 19  
Information Technology Equipment (ITE) 19  
Initialize Device Parameters 29  
Input noise ripple 15  
input voltage 13  
interface 10, 27  
Internal data transfer rate 4, 6, 8  
internal data-transfer rate OD 11  
PCBA 21  
Physical characteristics 12  
point-to-point 2, 25  
Power consumption 13  
power consumption 13  
Power dissipation 14  
Power modes 15  
Power specifications 13  
Power-management modes 15  
Power-on to Ready 13  
Power-on to ready 4, 6, 8  
precautions 23  
printed circuit board 23  
programmable power management 15  
ISO document 7779 17  
ITE 19  
Q
K
quick reference 3  
Korea Ministry of Information and Communication  
(MIC) 19  
Korean RRL 19  
R
Radiated RF immunity 18  
Radio and television interference 20  
radio frequency (RF) 18  
random seeks 13  
Read Buffer 29  
Read DMA 29  
Read DMA Extended 29  
Read DMA without Retries 29  
read errors 5, 7, 9, 18  
Read Log Ext 29  
L
latency 4, 6, 8, 12  
latency time 13  
LBA mode 10  
Length 4, 6, 8  
logical geometry 10  
40  
DB35.2 Serial ATA Product Manual, Rev. C  
Read Multiple 29  
Seek mode power 13  
Seek power 4, 6, 8  
Seek time 12  
seek time 4, 6, 8  
Seeking 14  
Read Multiple Extended 29  
Read Native Max Address 29  
Read Native Max Address Extended 29  
Read Sectors 29  
Read Sectors Extended 29  
Read Sectors Without Retries 29  
Read Verify Sectors 29  
Read Verify Sectors Extended 29  
Read Verify Sectors Without Retries 29  
read/write actuator arm 13  
Read/write heads 10  
Ready to spindle stop 13  
Recalibrate 29  
Serial ATA (SATA) interface 27  
serial ATA ports 2  
Servo electronics 13  
servo electronics 13  
Set Features 30  
Set Max Address 30  
Set Max Address Extended 30  
Set Multiple Mode 30  
Shock 16  
Recording density 4, 6, 8  
recording density 10  
recording method 10  
Recording technology 10  
Relative humidity 4, 6, 8  
relative humidity 16  
Reliability 18  
RMS read/write current 15  
RoHS 20  
Shock, nonoperating 5, 7, 9  
Shock, operating 5, 7, 9  
single-track seeks 12  
Sleep 14, 15, 30  
Sleep mode 4, 6, 8, 15  
sound power 7, 9  
Specification summary table 3  
Spindle speed 4, 6, 8  
spindle speed 11  
spindle stop 13  
RPM 4, 6, 8  
RRL 19  
Spinup 14  
Spinup power 13  
Standby 14, 15, 30  
Standby Immediate 30  
Standby mode 4, 6, 8, 13, 15  
standby timer 15  
Standby to Ready 13  
Standby to ready 4, 6, 8  
Start/stop times 13  
start-stop cycles 5, 7, 9, 18  
Startup current 4, 6, 8  
static-discharge 23  
sulfide-free alternatives 21  
support services 37  
Surge immunity 18  
S
S.M.A.R.T. Disable Operations 30  
S.M.A.R.T. Enable/Disable Autosave 30  
S.M.A.R.T. Enagle Operations 30  
S.M.A.R.T. Execute Offline 30  
S.M.A.R.T. implementation 29  
S.M.A.R.T. Read Attribute Thresholds 30  
S.M.A.R.T. Read Data 30  
S.M.A.R.T. Read Log Sector 30  
S.M.A.R.T. Return Status 30  
S.M.A.R.T. Save Attribute Values 30  
S.M.A.R.T. Write Log sector 30  
Safety certification 19  
T
SATA 27  
SATA data-transfer modes supported 4, 6, 8  
screws 16  
sector 10  
sectors 10  
Sectors per track 10  
technical support services 37  
temperature 4, 6, 8, 12, 16  
Temperature gradient 4, 6, 8  
temperature gradient 16  
timer 15  
sectors per track 4, 6, 8  
Security Disable Password 29  
Security Erase Prepare 29  
Security Erase Unit 30  
timers 15  
TPI 4, 6, 8  
Track density 4, 6, 8  
track density 10  
Security Freeze 30  
Track-to-track 12  
Security Set Password 30  
Security Unlock 30  
Seek 30  
Track-to-track seek time 4, 6, 8, 12  
tunneling magnetoresistive (TMR) heads 1  
TUV North America 19  
seek mode 13  
DB35.2 Serial ATA Product Manual, Rev. C  
41  
U
UL 1950 19  
V
Vibration 17  
Vibration, nonoperating 5, 7, 9  
Vibration, operating 5, 7, 9  
voltage 13  
Voltage dips, interrupts 18  
Voltage tolerance 4, 6, 8, 15  
W
Weight 4, 6, 8  
Wet bulb temperature 4, 6, 8  
wet bulb temperature 16  
Width 4, 6, 8  
Write Buffer 30  
Write DMA 30  
Write DMA Extended 30  
Write DMA FUA Extended 30  
Write DMA Without Retries 30  
Write Log Extended 30  
Write Multiple 30  
Write Multiple Extended 30  
Write Multiple FUA Extended 30  
Write Sectors 30  
Write Sectors Extended 30  
Write Sectors Without Retries 30  
42  
DB35.2 Serial ATA Product Manual, Rev. C  
Seagate Technology LLC  
920 Disc Drive, Scotts Valley, California 95066-4544, USA  
Publication Number: 100390003, Rev. C, Printed in USA  

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