Seagate Computer Drive ST31000340AS User Manual

Product Manual  
Barracuda 7200.11 Serial ATA  
ST31000340AS  
ST31000640AS  
ST3750330AS  
ST3750630AS  
ST3500320AS  
ST3500620AS  
ST3500820AS  
100452348  
Rev. C  
January 2008  
Contents  
5.0  
Barracuda 7200.11 Serial ATA Product Manual, Rev. C  
i
ii  
Barracuda 7200.11 Serial ATA Product Manual, Rev. C  
1.0  
Introduction  
This manual describes the functional, mechanical and interface specifications for the following Seagate  
Barracuda® 7200.11 Serial ATA model drives:  
ST31000340AS  
ST31000640AS  
ST3750330AS  
ST3750630AS  
ST3500320AS  
ST3500620AS  
ST3500820AS  
These drives provide the following key features:  
• 7,200 RPM spindle speed.  
• High instantaneous (burst) data-transfer rates (up to 300 Mbytes per second).  
• Perpendicular recording, Tunneling Magnetoresistive (TMR) recording heads and EPRML technology, for  
increased areal density.  
• State-of-the-art cache and on-the-fly error-correction algorithms.  
• Native Command Queueing with command ordering to increase performance in demanding applications.  
• Full-track multiple-sector transfer capability without local processor intervention.  
• Quiet operation.  
• SeaTools diagnostic software performs a drive self-test that eliminates unnecessary drive returns.  
• Support for S.M.A.R.T. drive monitoring and reporting.  
• Supports latching SATA cables and connectors.  
Barracuda 7200.11 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 International  
2
Barracuda 7200.11 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 drive models:  
ST31000340AS  
ST31000640AS  
ST3750330AS  
ST3750630AS  
ST3500320AS  
ST3500620AS  
ST3500820AS  
Specification summary tables  
The specifications listed in the following tables are for quick reference. For details on specification measure-  
ment or definition, see the appropriate section of this manual.  
Barracuda 7200.11 Serial ATA Product Manual, Rev. C  
3
     
Table 1:  
Drive specifications summary for 1000 and 750 Gbyte models  
Drive specification  
Formatted capacity (512 bytes/sector)*  
Guaranteed sectors  
Heads  
ST31000340AS  
ST31000640AS  
ST3750330AS  
ST3750630AS  
1000 Gbytes  
750 Gbytes  
1,953,525,168  
1,465,149,168  
8
6
3
Discs  
4
Bytes per sector  
512  
Default sectors per track  
Default read/write heads  
Default cylinders  
63  
16  
16,383  
Recording density  
1090 kbits/in max  
150 ktracks/in avg  
Track density  
2
Areal density  
164 Gbits/in avg  
Spindle speed  
7,200 RPM  
Internal data transfer rate  
Sustained data transfer rate OD  
I/O data-transfer rate  
ATA data-transfer modes supported  
1287 Mbits/sec max  
105 Mbytes/sec max  
300 Mbytes/sec max  
PIO modes 0–4  
Multiword DMA modes 0–2  
Ultra DMA modes 0–6  
Cache buffer  
32 Mbytes  
16 Mbytes  
32 Mbytes  
16 Mbytes  
Height (max)  
26.1 mm (1.028 inches)  
101.6 mm (4.000 inches) +/- 0.010 inches  
146.99 mm (5.787 inches)  
677 grams ( 1.493 lb.)  
4.16 msec  
Width (max)  
Length (max)  
Weight (typical)  
Average latency  
Power-on to ready  
Standby to ready  
Track-to-track seek time  
633 grams ( 1.396 lb.)  
20 sec max  
15 sec max  
<1.0 msec typical read;  
<1.2 msec typical write  
Average seek, read  
<8.5 msec typical  
<9.5 msec typical  
3.0 amps  
Average seek, write  
Startup current (typical) 12V (peak)  
Voltage tolerance (including noise)  
5V +10% / -7.5%  
12V +10% / -7.5%  
Ambient temperature  
Temperature gradient  
Relative humidity  
0° to 60°C per hour max (operating)  
–40° to 70°C per hour max (nonoperating)  
20°C per hour max (operating)  
30°C per hour max (nonoperating)  
5% to 95% (operating)  
5% to 95% (nonoperating)  
Relative humidity gradient  
Wet bulb temperature  
30% per hour max  
37.7°C max (operating)  
40.0°C max (nonoperating)  
Altitude, operating  
–60.96 m to 3,048 m  
(–200 ft. to 10,000+ ft.)  
Altitude, nonoperating  
(below mean sea level, max)  
–60.96 m to 12,192 m  
(–200 ft. to 40,000+ ft.)  
Operational Shock  
70 Gs max at 2 msec  
300 Gs max at 2 msec  
Non-Operational Shock  
4
Barracuda 7200.11 Serial ATA Product Manual, Rev. C  
Drive specification  
Vibration, operating  
ST31000340AS  
ST31000640AS  
ST3750330AS  
ST3750630AS  
2–22 Hz: 0.25 Gs, Limited displacement  
22–350 Hz: 0.50 Gs  
350–500 Hz:: 0.25 Gs  
Vibration, nonoperating  
5–22 Hz: 2.0 Gs  
22–350 Hz: 5.0 Gs  
350–500 Hz:: 2.0 Gs  
Drive acoustics, sound power  
Idle**  
2.9 bels (typical)  
3.1 bels (max)  
Performance Seek  
Quiet Seek  
3.2 bels (typical)  
33 bels (max)  
3.1 bels (typical)  
3.2 bels (max)  
14  
Nonrecoverable read errors  
Annualized Failure Rate (AFR)  
Warranty  
1 per 10 bits read  
0.34%  
5 years on distribution units.  
To determine the warranty for a specific drive, use a web browser to access the following  
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 at 25°C, 50% rel. humidity  
Yes  
Supports Hotplug operation per the  
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.  
Barracuda 7200.11 Serial ATA Product Manual, Rev. C  
5
Table 2:  
Drive specifications summary for 500 Gbyte models  
Drive specification  
ST3500320AS  
ST3500620AS  
ST3500820AS  
Formatted capacity (512 bytes/sector)*  
Guaranteed sectors  
Heads  
500 Gbytes  
976,773,168  
4
Discs  
2
Bytes per sector  
512  
Default sectors per track  
Default read/write heads  
Default cylinders  
63  
16  
16,383  
Recording density  
1090 kbits/in max  
150 ktracks/in avg  
Track density  
2
Areal density  
164 Gbits/in avg  
Spindle speed  
7,200 RPM  
Internal data transfer rate  
Sustained data transfer rate OD  
I/O data-transfer rate  
ATA data-transfer modes supported  
1287 Mbits/sec max  
105 Mbytes/sec max  
300 Mbytes/sec max  
PIO modes 0–4  
Multiword DMA modes 0–2  
Ultra DMA modes 0–6  
Cache buffer  
32 Mbytes  
16 Mbytes  
8 Mbytes  
Height (max)  
26.1 mm (1.028 inches)  
Width (max)  
101.6 mm (4.000 inches) +/- 0.010 inches  
146.99 mm (5.787 inches)  
543 grams ( 1.199 lb.)  
4.16 msec  
Length (max)  
Weight (typical)  
Average latency  
Power-on to ready  
Standby to ready  
Track-to-track seek time  
20 sec max  
14 sec max  
<0.8 msec typical read;  
<1.0 msec typical write  
Average seek, read  
<8.5 msec typical  
<9.5 msec typical  
3.0 amps  
Average seek, write  
Startup current (typical) 12V (peak)  
Voltage tolerance (including noise)  
5V +10% / -7.5%  
12V +10% / -7.5%  
Ambient temperature  
Temperature gradient  
Relative humidity  
0° to 60°C per hour max (operating)  
–40° to 70°C per hour max (nonoperating)  
20°C per hour max (operating)  
30°C per hour max (nonoperating)  
5% to 95% (operating)  
5% to 95% (nonoperating)  
Relative humidity gradient  
Wet bulb temperature  
30% per hour max  
37.7°C max (operating)  
40.0°C max (nonoperating)  
Altitude, operating  
–60.96 m to 3,048 m  
(–200 ft. to 10,000+ ft.)  
Altitude, nonoperating  
(below mean sea level, max)  
–60.96 m to 12,192 m  
(–200 ft. to 40,000+ ft.)  
Operational Shock  
70 Gs max at 2 msec  
300 Gs max at 2 msec  
Non-Operational Shock  
6
Barracuda 7200.11 Serial ATA Product Manual, Rev. C  
Drive specification  
Vibration, operating  
ST3500320AS  
ST3500620AS  
ST3500820AS  
2–22 Hz: 0.25 Gs, Limited displacement  
22–350 Hz: 0.50 Gs  
350–500 Hz:: 0.25 Gs  
Vibration, nonoperating  
5–22 Hz: 2.0 Gs  
22–350 Hz: 5.0 Gs  
350–500 Hz:: 2.0 Gs  
Drive acoustics, sound power  
Idle**  
2.7 bels (typical)  
2.9 bels (max)  
Performance Seek  
Quiet Seek  
3.1 bels (typical)  
3.2 bels (max)  
3.0 bels (typical)  
3.1 bels (max)  
14  
Nonrecoverable read errors  
Annualized Failure Rate (AFR)  
Warranty  
1 per 10 bits read  
0.34%  
5 years on distribution units.  
To determine the warranty for a specific drive, use a web browser to access the following  
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.  
Drive acoustics, sound power  
Supports Hotplug operation per the  
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.  
Barracuda 7200.11 Serial ATA Product Manual, Rev. C  
7
2.1  
Formatted capacity  
Formatted  
capacity*  
Guaranteed  
sectors  
Model  
Bytes per sector  
ST31000340AS  
ST31000640AS  
1000 Gbytes  
750 Gbytes  
1,953,525,168  
1,465,149,168  
512  
512  
ST3750330AS  
ST3750630AS  
ST3500320AS  
ST3500620AS  
ST3500820AS  
500 Gbytes  
976,773,168  
512  
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment  
and formatting.  
2.1.1  
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.  
2.2  
Default logical geometry  
Cylinders  
Read/write heads  
Sectors per track  
16,383  
16  
63  
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.  
2.3  
Recording and interface technology  
Interface  
Serial ATA (SATA)  
Recording method  
Perpendicular  
1090  
Recording density (kbits/inch max)  
Track density (ktracks/inch avg)  
150  
2
Areal density (Gbits/inch avg)  
164  
Spindle speed (RPM)  
7,200 ± 0.2%  
1287  
Internal data transfer rate (Mbits/sec max)  
Sustained data transfer rate (Mbytes/sec max)  
I/O data-transfer rate (Mbytes/sec max)  
105  
300  
8
Barracuda 7200.11 Serial ATA Product Manual, Rev. C  
                                                   
2.4  
Physical characteristics  
Maximum height (1000-500 GB models)  
Maximum width  
26.1 mm (1.028 inches)  
101.6 mm (4.000 +/- 0.010 inches)  
146.99 mm (5.787 inches)  
Maximum length  
Typical weight  
1000 GB models  
677 grams (1.493 lbs)  
633 grams (1.396 lbs)  
543 grams (1.199 lbs)  
750 GB models  
500 GB models  
Cache buffer  
ST31000340AS, ST3750330AS and ST3500320AS  
ST31000640AS, ST3750630AS and ST3500620AS  
ST3500820AS  
32 Mbytes (32,768 kbytes)  
16 Mbytes (16,384 kbytes)  
8 Mbytes (8,192 kbytes)  
2.5  
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 (1000 GB & 750 GB models)  
Track-to-track (500 GB models)  
Average  
Read  
<1.0  
<0.8  
<8.5  
4.16  
Write  
<1.2  
<1.0  
<9.5  
Average latency:  
*Measured in performance mode.  
**Measured in quiet mode.  
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 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.  
2.6  
Start/stop times  
1000 GB  
Models  
750 GB  
Models  
500 GB  
Models  
Power-on to Ready (sec)  
20 (max)  
17 (max)  
15 (max)  
10 (max)  
Power-on to Ready (sec) (2.0 Amp Code Option)  
Standby to Ready (sec)  
14 (max)  
Ready to spindle stop (sec)  
Barracuda 7200.11 Serial ATA Product Manual, Rev. C  
9
                                               
2.7  
Power specifications  
The drive receives DC power (+5V or +12V) through a native SATA power connector. See Figure 4 on page 20.  
2.7.1 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 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.  
• 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 idle mode.  
• 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.  
Table 3:  
DC power requirements  
Power dissipation (4-disc values shown)  
Avg (watts 25° C)  
Avg 5V typ amps  
Avg 12V typ amps  
3.0 (peak)  
0.530  
Spinup  
Idle*  
7.96  
9.29  
11.16  
10.42  
0.99  
0.99  
0.320  
Idle* (with offline activity)  
Operating (40% r/w, 40% seek, 20% inop.)  
Seeking (random, 20% idle)  
Standby  
0.610  
0.520  
0.600  
0.680  
0.500  
0.660  
0.150  
0.020  
Sleep  
0.150  
0.020  
*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.  
10  
Barracuda 7200.11 Serial ATA Product Manual, Rev. C  
                                                           
2.7.1.1  
Typical current profiles  
Figure 1. Typical 5V startup and operation current profile  
Figure 2. Typical 12V startup and operation current profile  
Barracuda 7200.11 Serial ATA Product Manual, Rev. C  
11  
   
2.7.2  
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 voltage by the typical RMS read/write  
current.  
2.7.3  
Voltage tolerance  
Voltage tolerance (including noise):  
5V +10% / -7.5%  
12V +10% / -7.5%  
2.7.4  
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  
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.  
12  
Barracuda 7200.11 Serial ATA Product Manual, Rev. C  
                                           
2.8  
Environmental specifications  
Ambient temperature  
2.8.1  
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.  
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 140°F)  
Nonoperating:  
–40° to 70°C (–40° to 158°F)  
2.8.2  
Temperature gradient  
Operating:  
20°C per hour (68°F per hour max), without condensation  
30°C per hour (86°F per hour max)  
Nonoperating:  
2.8.3  
2.8.3.1  
Humidity  
Relative humidity  
Operating:  
Nonoperating:  
5% to 95% noncondensing (30% per hour max)  
5% to 95% noncondensing (30% per hour max)  
2.8.3.2  
Wet bulb temperature  
Operating:  
37.7°C (99.9°F max)  
40°C (104°F max)  
Nonoperating:  
2.8.4  
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:  
2.8.5  
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.  
2.8.5.1  
Operating shock  
These drives comply with the performance levels specified in this document when subjected to a maximum  
operating shock of 70 Gs based on half-sine shock pulses of 2 msec. Shocks should not be repeated more  
than two times per second.  
2.8.5.2  
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 based on a nonrepetitive half-sine shock pulse  
of 2 msec duration.  
Barracuda 7200.11 Serial ATA Product Manual, Rev. C  
13  
                                         
2.8.6  
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.  
2.8.6.1  
Operating vibration  
The maximum vibration levels that the drive may experience while meeting the performance standards speci-  
fied in this document are specified below.  
2–22 Hz  
0.25 Gs (Limited displacement)  
22–350 Hz  
350–500 Hz  
0.50 Gs  
0.25 Gs  
2.8.6.2  
Nonoperating vibration  
The maximum nonoperating vibration levels that the drive may experience without incurring physical damage  
or degradation in performance when subsequently put into operation are specified below.  
1000 GB, 750 GB and 500 GB models  
5–22 Hz  
2.0 Gs (limited displacement)  
22–350 Hz  
350–500 Hz  
5.0 Gs  
2.0 Gs  
14  
Barracuda 7200.11 Serial ATA Product Manual, Rev. C  
           
2.9  
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)  
Table 4:  
Fluid Dynamic Bearing (FDB) motor acoustics  
Idle*  
Performance Seek  
Quiet Seek  
ST31000340AS, ST31000640AS,  
ST3750330AS and ST3750630AS  
2.9 bels (typ)  
3.1 bels (max)  
3.2 bels (typ)  
3.3 bels (max)  
3.1 bels (typ)  
3.2 bels (max)  
ST3500320AS, ST3500620AS and  
ST3500820AS  
2.7 bels (typ)  
2.9 bels (max)  
3.1 bels (typ)  
3.2 bels (max)  
3.0 bels (typ)  
3.1 bels (max)  
*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.  
2.9.1  
Test for Prominent Discrete Tones (PDTs)  
Seagate follows the ECMA-74 standards for measurement and identification of PDTs. An exception to this  
process is the use of the absolute threshold of hearing. Seagate uses this threshold curve (originated in ISO  
389-7) to discern tone audibility and to compensate for the inaudible components of sound prior to computation  
of tone ratios according to Annex D of the ECMA-74 standards.  
2.10  
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:  
Table 5:  
Test  
Radio frequency environments  
Description  
Performance level  
Reference standard  
Electrostatic  
discharge  
Contact, HCP, VCP: ± 4 kV; Air: ± 8 kV  
B
EN 61000-4-2: 95  
Radiated RF  
immunity  
80 to 1,000 MHz, 3 V/m,  
A
B
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  
transient  
± 1 kV on AC mains, ± 0.5 kV on external I/O  
EN 61000-4-4: 95  
Surge immunity ± 1 kV differential, ± 2 kV common, AC mains  
B
A
EN 61000-4-5: 95  
EN 61000-4-6: 97  
Conducted RF  
immunity  
150 kHz to 80 MHz, 3 Vrms, 80% AM with 1 kHz sine  
Voltage dips,  
interrupts  
0% open, 5 seconds  
0% short, 5 seconds  
40%, 0.10 seconds  
70%, 0.01 seconds  
C
C
C
B
EN 61000-4-11: 94  
Barracuda 7200.11 Serial ATA Product Manual, Rev. C  
15  
                               
2.11  
Reliability  
2.11.1  
Annualized Failure Rate (AFR) and Mean Time Between Failures (MTBF)  
The product shall achieve an Annualized Failure Rate (AFR) of 0.34% (MTBF of 0.7 million hours) when oper-  
ated in an environment of ambient air temperatures of 25°C. Operation at temperatures outside the specifica-  
tions in Section 2.8 may increase the product AFR (decrease MTBF). AFR and MTBF are population statistics  
that are not relevant to individual units.  
AFR and MTBF specifications are based on the following assumptions for desktop personal computer environ-  
ments:  
• 2400 power-on-hours per year.  
• 10,000 average motor start/stop cycles per year.  
• Operations at nominal voltages.  
• Temperatures outside the specifications in Section 2.8 may reduce the product reliability.  
• Normal I/O duty cycle for desktop personal computers. Operation at excessive I/O duty cycle may degrade  
product reliability.  
The desktop personal computer environment of power-on-hours, temperature, and I/O duty cycle affect the  
product AFR and MTBF. The AFR and MTBF will be degraded if used in an enterprise application  
14  
Nonrecoverable read errors  
Annualized Failure Rate (AFR)  
Contact start-stop cycles  
1 per 10 bits read, max  
0.34% (nominal power, 25°C ambient temperature)  
50,000 cycles  
(at nominal voltage and temperature, with 60 cycles per hour and a 50% duty cycle)  
Warranty  
5 years on distribution units.  
To determine the warranty for a specific drive, use a web browser to access the  
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.  
Preventive maintenance  
None required.  
2.12  
Agency certification  
2.12.1  
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.  
2.12.2  
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.  
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.  
16  
Barracuda 7200.11 Serial ATA Product Manual, Rev. C  
                                                                           
Korean RRL  
If these drives have the Korea Ministry of Information and Communication (MIC) logo, they comply with  
paragraph 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  
Susceptibility (EMI/EMS) for Class B products. Drives are tested in a representative, end-user system by a  
Korean-recognized lab.  
• Family name: Barracuda 7200.11  
• Certificate number: 1000 GB-  
STX- ST31000340AS (B)  
STX- ST31000340AS (B)  
STX- ST3500320AS (B)  
750 GB-  
500 GB-  
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  
Communication Authority (ACA).  
2.12.3  
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  
marketed to the customer. As a subassembly, no Federal Communications Commission verification or  
certification of the device is required.  
Seagate 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  
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 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.  
Barracuda 7200.11 Serial ATA Product Manual, Rev. C  
17  
                               
2.13  
Environmental protection  
Seagate designs its products to meet environmental protection requirements worldwide, including regulations  
restricting certain chemical substances.  
2.13.1  
European Union Restriction of Hazardous Substances (RoHS) Directive  
Seagate designs its products to meet environmental protection requirements worldwide, including regulations  
restricting certain chemical substances. A new law, the European Union Restriction of Hazardous Substances  
(RoHS) Directive, restricts the presence of chemical substances, including Lead, Cadmium, Mercury,  
Hexavalent Chromium, PBB and PBDE, in electronic products, effective July 2006. This drive is manufactured  
with components and materials that comply with the RoHS Directive.  
2.13.2  
2.13.2  
China Restriction of Hazardous Substances (RoHS) Directive  
This product has an Environmental Protection Use Period (EPUP) of 20 years. The following  
table contains information mandated by China's "Marking Requirements for Control of Pollution  
Caused by Electronic Information Products" Standard.  
"O" indicates the hazardous and toxic substance content of the part (at the homogenous material level) is lower  
than the threshold defined by the China RoHS MCV Standard.  
O”  
RoHS MCV  
"X" indicates the hazardous and toxic substance content of the part (at the homogenous material level) is over  
the threshold defined by the China RoHS MCV Standard.  
X”  
RoHS MCV  
2.14  
Corrosive environment  
Seagate electronic drive components pass accelerated corrosion testing equivalent to 10 years exposure to  
light industrial environments containing sulfurous gases, chlorine and nitric oxide, classes G and H per ASTM  
B845. However, this accelerated testing cannot duplicate every potential application environment. Users  
should use caution exposing any electronic components to uncontrolled chemical pollutants and corrosive  
chemicals as electronic drive component reliability can be affected by the installation environment. The silver,  
copper, nickel and gold films used in Seagate products are especially sensitive to the presence of sulfide, chlo-  
ride, 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.  
18  
Barracuda 7200.11 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:  
• 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.  
Barracuda 7200.11 Serial ATA Product Manual, Rev. C  
19  
                   
3.2  
Configuring the drive  
Each drive on the Serial ATA interface connects point-to-point with the Serial ATA host adapter. There is no  
master/slave relationship because each drive is considered a master in a point-to-point relationship. 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. 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 3 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 3 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.  
3.0 Gbits per second operation  
Limit data transfer rate to  
1.5 Gbits per second  
Jumper block  
SATA interface connector  
Figure 3. Serial ATA connectors  
SATA power connector  
3.3  
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 4.  
Signal connector  
Power connector  
Signal cable  
Power cable  
Figure 4. Attaching SATA cabling  
Each cable is keyed to ensure correct orientation. Barracuda 7200.11 Serial ATA drives support latching SATA  
connectors.  
20  
Barracuda 7200.11 Serial ATA Product Manual, Rev. C  
             
3.4  
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 5 for drive mounting dimensions. Follow these important mounting precau-  
tions 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  
(101.60)  
[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 5. Mounting dimensions  
Barracuda 7200.11 Serial ATA Product Manual, Rev. C  
21  
       
22  
Barracuda 7200.11 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  
Barracuda 7200.11 Serial ATA drives incorporate connectors which enable you to hot plug these drives in  
accordance with the Serial ATA Revision 2.5 specification. This specification can be downloaded from  
Barracuda 7200.11 Serial ATA Product Manual, Rev. C  
23  
         
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.  
24  
Barracuda 7200.11 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 International Organization: Serial ATA Revision 2.6 (http://  
www.sata-io.org). See “S.M.A.R.T. commands” on page 32.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  
F6  
H
Barracuda 7200.11 Serial ATA Product Manual, Rev. C  
25  
                                                                     
Command name  
Security Erase Prepare  
Security Erase Unit  
Security Freeze  
Security Set Password  
Security Unlock  
Seek  
Command code (in hex)  
F3  
F4  
F5  
F1  
F2  
H
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  
H
Write Sectors Without Retries  
31  
H
26  
Barracuda 7200.11 Serial ATA Product Manual, Rev. C  
                                                                   
Command name  
Command code (in hex)  
34  
Write Sectors Extended  
H
Barracuda 7200.11 Serial ATA Product Manual, Rev. C  
27  
 
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 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 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  
Configuration information:  
• Bit 15: 0 = ATA; 1 = ATAPI  
• Bit 7: removable media  
• Bit 6: removable controller  
• Bit 0: reserved  
0
0C5A  
H
1
Number of logical cylinders  
16,383  
2
ATA-reserved  
0000  
16  
H
3
Number of logical heads  
4
Retired  
0000  
0000  
H
H
5
Retired  
6
Number of logical sectors per logical track: 63  
Retired  
003F  
H
H
7–9  
10–19  
20  
21  
22  
0000  
Serial number: (20 ASCII characters, 0000 = none)  
ASCII  
H
Retired  
Retired  
Obsolete  
0000  
0400  
0000  
H
H
H
Firmware revision (8 ASCII character string, padded with blanks to end  
of string)  
23–26  
27–46  
47  
x.xx  
Drive model number: (40 ASCII characters, padded with blanks to end  
of string)  
(Bits 7–0) Maximum sectors per interrupt on Read multiple and Write  
multiple (16)  
8010  
0000  
H
48  
Reserved  
H
49  
Standard Standby timer, IORDY supported and may be disabled  
ATA-reserved  
2F00  
H
H
H
H
H
50  
0000  
0200  
0200  
0007  
51  
PIO data-transfer cycle timing mode  
Retired  
52  
53  
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  
Current capacity in sectors  
54  
xxxx  
xxxx  
xxxx  
xxxx  
H
55  
H
H
H
56  
57–58  
Number of sectors transferred during a Read Multiple or Write Multiple  
command  
59  
xxxx  
H
28  
Barracuda 7200.11 Serial ATA Product Manual, Rev. C  
   
Word  
Description  
Value  
Total number of user-addressable LBA sectors available  
(see Section 2.1 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.  
60–61  
0FFFFFFFh*  
62  
63  
Retired  
0000  
H
Multiword DMA active and modes supported (see note following this  
table)  
xx07  
H
64  
65  
Advanced PIO modes supported (modes 3 and 4 supported)  
Minimum multiword DMA transfer cycle time per word (120 nsec)  
0003  
0078  
H
H
Recommended multiword DMA transfer cycle time per word (120  
nsec)  
66  
0078  
H
67  
Minimum PIO cycle time without IORDY flow control (240 nsec)  
Minimum PIO cycle time with IORDY flow control (120 nsec)  
ATA-reserved  
00F0  
H
H
H
H
68  
0078  
0000  
0000  
69–74  
75  
Queue depth  
76  
Serial ATA capabilities  
xxxx  
xxxx  
xxxx  
xxxx  
H
77  
Reserved for future Serial ATA definition  
Serial ATA features supported  
Serial ATA features enabled  
H
H
H
78  
79  
80  
Major version number  
003E  
H
H
81  
Minor version number  
0000  
82  
Command sets supported  
364B  
H
83  
Command sets supported  
7C03  
H
84  
Command sets support extension  
Command sets enabled  
4003  
H
85  
30xx  
H
86  
Command sets enabled  
0001  
4000  
H
H
H
87  
Command sets enable extension  
Ultra DMA support and current mode (see note following this table)  
Security erase time  
88  
xx3F  
89  
0000  
H
H
90  
Enhanced security erase time  
Master password revision code  
Hardware reset value (see description following this table)  
ATA-reserved  
0000  
92  
FFFE  
H
93  
xxxx  
H
95–99  
0000  
H
ST31000340AS =1,953,525,168  
ST31000640AS =1,953,525,168  
ST3750330AS = 1,465,149,168  
ST3750630AS = 1,465,149,168  
ST3500320AS = 976,773,168  
ST3500620AS = 976,773,168  
ST3500820AS = 976,773,168  
Total number of user-addressable LBA sectors available (see Section  
2.1 for related information). These words are required for drives that  
support the 48-bit addressing feature. Maximum value:  
0000FFFFFFFFFFFFh.  
100–103  
104–127  
ATA-reserved  
0000  
H
Barracuda 7200.11 Serial ATA Product Manual, Rev. C  
29  
Word  
128  
Description  
Value  
Security status  
Seagate-reserved  
ATA-reserved  
Integrity word  
0001  
H
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  
30  
Barracuda 7200.11 Serial ATA Product Manual, Rev. C  
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.  
Barracuda 7200.11 Serial ATA Product Manual, Rev. C  
31  
 
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.  
32  
Barracuda 7200.11 Serial ATA Product Manual, Rev. C  
 
5.0  
Seagate Technology support services  
Online 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.  
Barracuda 7200.11 Serial ATA Product Manual, Rev. C  
33  
   
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.  
Publication feedback survey  
We are interested in your comments and suggestions regarding this publication. Please take a few minutes to  
participate in our survey at the following URL:  
Thank you for your time and comments.  
34  
Barracuda 7200.11 Serial ATA Product Manual, Rev. C  
Device Configuration Freeze Lock 25  
Device Configuration Identify 25  
Device Configuration Restore 25  
Device Configuration Set 25  
Device Reset 25  
dimensions 21  
disc surface 10  
dissipation 10  
Download Microcode 25  
duty cycle 16  
Index  
A
ACA 17  
acceleration 14  
acoustics 15  
Active 12  
Active mode 12  
actuator arm 10  
AFR 16  
E
Agency certification 16  
altitude 13  
Electrical fast transient 15  
Electromagnetic compatibility 16  
Electromagnetic Compatibility (EMC) 17  
Electromagnetic Compatibility control Regulation 17  
Electromagnetic Compatibility Directive (89/336/EEC)  
Electromagnetic immunity 15  
Electrostatic discharge 15  
electrostatic discharge (ESD) 19  
EN 55022, Class B 16  
EN 55024 16  
Ambient temperature 13  
ambient temperature 9, 10  
Annualized Failure Rate 16  
Annualized Failure Rate (AFR) 16  
areal density 1, 8  
ATA commands 25  
Australia/New Zealand Standard AS/NZS3548 1995  
Australian Communication Authority (ACA) 17  
Australian C-Tick 17  
Average latency 9  
EN 60950 16  
enclosures 17  
Average seek time 9  
Environmental specifications 13  
EPRML 1  
error-correction algorithms 1  
errors 16  
B
buffer 9  
ESD 19  
C
cables and connectors 20  
cache 9  
capacity 8  
case temperature 13  
CE mark 16  
certification 16  
Check Power Mode 25  
China RoHS directive 18  
compatibility 16  
Conducted noise 12  
Conducted RF immunity 15  
Configuring the drive 19  
connectors 20  
Corrosive environment 18  
CSA C22.2 (950) 16  
cycles 16  
EU RoHS directive 18  
European Union (EU) requirements 16  
Execute Device Diagnostics 25  
F
FCC verification 17  
features 1  
Flush Cache 25  
Flush Cache Extended 25  
Format Track 25  
Formatted capacity 8  
G
geometry 8  
guaranteed sectors 8  
Cylinders 8  
D
H
data-transfer rates 1  
DC power 10  
Default logical geometry 8  
density 8  
Handling precautions 19  
heads 8  
height 9  
humidity 13  
Barracuda 7200.11 Serial ATA Product Manual, Rev. C  
35  
Operating power 10  
Operating shock 13  
Operating vibration 14  
I
I/O data-transfer rate 8  
I/O duty cycle 16  
Identify Device 25  
Identify Device command 28  
Idle 12, 25  
Idle Immediate 25  
Idle mode 10, 12  
IEC950 16  
Information Technology Equipment (ITE) 16  
Initialize Device Parameters 25  
Input noise ripple 12  
input voltage 10  
P
Physical characteristics 9  
point-to-point 2, 20  
Power consumption 10  
power consumption 10  
power dissipation 10  
Power modes 12  
Power specifications 10  
Power-management modes 12  
Power-on to Ready 9  
power-on-hours 16  
interface 8, 23  
interference 17  
precautions 19  
internal data-transfer rate OD 8  
is 9  
ISO document 7779 15  
ITE 16  
printed circuit board 19  
programmable power management 12  
prominent discrete tone 15  
Q
K
quick reference 3  
Korea Ministry of Information and Communication  
(MIC) 17  
Korean RRL 17  
R
Radiated RF immunity 15  
radio and television interference 17  
radio frequency (RF) 15  
random seeks 10  
Read Buffer 25  
Read DMA 25  
L
latency 9  
latency time 10  
LBA mode 8  
length 9  
Read DMA Extended 25  
Read DMA without Retries 25  
read errors 16  
Read Log Ext 25  
Read Multiple 25  
Read Multiple Extended 25  
Read Native Max Address 25  
Read Native Max Address Extended 25  
Read Sectors 25  
Read Sectors Extended 25  
Read Sectors Without Retries 25  
Read Verify Sectors 25  
Read Verify Sectors Extended 25  
Read Verify Sectors Without Retries 25  
read/write actuator arm 10  
Read/write heads 8  
logical geometry 8  
M
maintenance 16  
master/slave 2  
maximum temperature 13  
Mean Time Between Failures 16  
MIC 17  
mounting 21  
mounting screws 13  
mounting the drive 19  
MTBF 16  
N
noise 12  
Read/write power 10  
Recalibrate 25  
recording density 8  
nominal power 9  
Nonoperating shock 13  
Nonoperating vibration 14  
Nonrecoverable read errors 16  
recording method 8  
Recording technology 8  
relative humidity 13  
Reliability 16  
O
operating 10  
36  
Barracuda 7200.11 Serial ATA Product Manual, Rev. C  
RMS read/write current 12  
RoHS 18  
RRL 17  
start-stop cycles 16  
static-discharge 19  
subassembly 17  
support services 33  
Surge immunity 15  
S
S.M.A.R.T. Disable Operations 26  
S.M.A.R.T. Enable Operations 26  
S.M.A.R.T. Enable/Disable Autosave 26  
S.M.A.R.T. Execute Offline 26  
S.M.A.R.T. implementation 25  
S.M.A.R.T. Read Attribute Thresholds 26  
S.M.A.R.T. Read Data 26  
S.M.A.R.T. Read Log Sector 26  
S.M.A.R.T. Return Status 26  
S.M.A.R.T. Save Attribute Values 26  
S.M.A.R.T. Write Log sector 26  
Safety certification 16  
SATA 23  
T
technical support services 33  
temperature 9, 13  
temperature gradient 13  
timer 12  
timers 12  
track density 8  
Track-to-track 9  
Track-to-track seek time 9  
tunneling magnetoresistive (TMR) recording heads 1  
U
screws 13  
sectors 8  
UL 1950 16  
Sectors per track 8  
V
Security Disable Password 25  
Security Erase Prepare 26  
Security Erase Unit 26  
Security Freeze 26  
Security Set Password 26  
Security Unlock 26  
Vibration 14  
voltage 10  
Voltage dips, interrupts 15  
Voltage tolerance 12  
Seek 26  
seek mode 10  
Seek mode power 10  
Seek time 9  
Seeking 10  
Serial ATA (SATA) interface 23  
serial ATA ports 2  
Servo electronics 10  
servo electronics 10  
Set Features 26  
Set Max Address 26  
Set Max Address Extended 26  
Set Multiple Mode 26  
Shock 13  
W
Warranty 16  
weight 9  
wet bulb temperature 13  
width 9  
Write Buffer 26  
Write DMA 26  
Write DMA Extended 26  
Write DMA FUA Extended 26  
Write DMA Without Retries 26  
Write Log Extended 26  
Write Multiple 26  
Write Multiple Extended 26  
Write Multiple FUA Extended 26  
Write Sectors 26  
single-track seeks 9  
Sleep 10, 12, 26  
Sleep mode 12  
Write Sectors Extended 27  
Write Sectors Without Retries 26  
sound 15  
Specification summary table 3  
spindle speed 8  
Spinup 10  
Spinup power 10  
Standby 10, 12, 26  
Standby Immediate 26  
Standby mode 10, 12  
standby timer 12  
Standby to Ready 9  
Start/stop times 9  
Barracuda 7200.11 Serial ATA Product Manual, Rev. C  
37  
38  
Barracuda 7200.11 Serial ATA Product Manual, Rev. C  
Seagate Technology LLC  
920 Disc Drive, Scotts Valley, California 95066-4544, USA  
Publication Number: 100452348, Rev. C, Printed in U.S.A.  

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