Seagate BARRACUDA ST31000524AS User Manual
Page 14
14
Barracuda SATA Product Manual, Rev. A
Drive Specifications
*One GB 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.
Warranty
To determine the warranty for a specific drive, use a web browser to access the following web
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 dis-
play the warranty information for your drive.
Contact start-stop cycles
50,000 at 25°C, 50% rel. humidity
50,000 at 25°C, 50% rel. humidity
Supports Hotplug operation per the
Serial ATA Revision 2.5 specification
Yes
Yes
Table 3 Drive specifications summary for 250GB and 160GB models
Drive specification
ST3250312AS
ST3160316AS
Formatted capacity (512 bytes/sector)*
250GB
160GB
Guaranteed sectors
488,397,168
312,581,808
Heads
1
1
Disks
1
1
Bytes per sector
512
512
Default sectors per track
63
63
Default read/write heads
16
16
Default cylinders
16,383
16,383
Recording density (max.)
1413kb/in
1413kb/in
Track density (avg.)
236 ktracks/in
236 ktracks/in
Areal density (avg.)
329Gb/in
2
329Gb/in
2
Spindle speed
7200 RPM
7200 RPM
Internal data transfer rate (max.)
1695Mb/s
1695Mb/s
Sustained data transfer rate OD (max.)
125MB/s
125MB/s
I/O data-transfer rate
600MB/s
600MB/s
ATA data-transfer modes supported
PIO modes: 0 to 4
Multiword DMA modes: 0 to 2
Ultra DMA modes: 0 to 6
PIO modes: 0 to 4
Multiword DMA modes: 0 to 2
Ultra DMA modes: 0 to 6
Cache buffer
8MB
8MB
Height (max.)
19.98mm / 0.787 in
19.98mm / 0.787 in
Width (max.)
101.6mm / 4.0 in ( + 0.010 in)
101.6mm / 4.0 in ( + 0.010 in)
Length (max.)
146.99mm / 5.787 in
146.99mm / 5.787 in
Weight (typical)
415g / 0.915 lb
415g / 0.915 lb
Average latency
4.16ms
4.16ms
Power-on to ready (max.)
<8.5s
<8.5s
Standby to ready (max.)
<8.5s
<8.5s
Track-to-track seek time (typical)
<1.0ms (read)
<1.2ms (write)
<1.0ms (read)
<1.2ms (write)
Average seek, read (typical)
Average seek, write (typical)
<8.5ms (read)
<9.5ms (write)
<8.5ms (read)
<9.5ms (write)
Startup current (typical) 12V (peak)
2.0A
2.0A
Voltage tolerance (including noise)
5V +10% / -7.5%
12V +10% / -7.5%
5V +10% / -7.5%
12V +10% / -7.5%
Ambient temperature
0° to 60°C (operating)
–40° to 70°C (non-operating)
0° to 60°C (operating)
–40° to 70°C (non-operating)
Table 2 Drive specifications summary for 500GB and 320 models (continued)
Drive specification
ST3500413AS ST3320413AS