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12 Barracuda SATA Product Manual, Rev. B
Drive Specifications www.seagate.com
*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.
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)
Temperature gradient 20°C per hour max (operating)
30°C per hour max (non-operating)
20°C per hour max (operating)
30°C per hour max (non-operating)
Relative humidity 5% to 95% (operating)
5% to 95% (non-operating)
5% to 95% (operating)
5% to 95% (non-operating)
Relative humidity gradient (max.) 30% per hour 30% per hour
Wet bulb temperature (max.) 37.7°C max (operating)
40.0°C max (non-operating)
37.7°C max (operating)
40.0°C max (non-operating)
Altitude, operating –304.8m to 3,048m
(–1000 ft to 10,000+ ft)
–304.8m to 3,048m
(–1000 ft to 10,000+ ft)
Altitude, non-operating
(below mean sea level, max)
–304.8m to 12,192m
(–1000 ft to 40,000+ ft)
–304.8m to 12,192m
(–1000 ft to 40,000+ ft)
Operational Shock (max) 70 Gs at 2ms 70 Gs at 2ms
Non-Operational Shock (max) 300 Gs at 2ms 300 Gs at 2ms
Vibration, operating 2Hz to 22Hz: 0.25 Gs, Limited displace-
ment
22Hz to 350Hz: 0.50 Gs
350Hz to 500Hz: 0.25 Gs
2Hz to 22Hz: 0.25 Gs, Limited displacement
22Hz to 350Hz: 0.50 Gs
350Hz to 500Hz: 0.25 Gs
Vibration, non-operating 5Hz to 22Hz: 3.0 Gs
22Hz to 350Hz: 3.0 Gs
350Hz to 500Hz: 3.0 Gs
5Hz to 22Hz: 3.0 Gs
22Hz to 350Hz: 3.0 Gs
350Hz to 500Hz: 3.0 Gs
Drive acoustics, sound power
Idle** 2.6 bels (typical)
2.7 bels (max)
2.6 bels (typical)
2.7 bels (max)
Seek 2.8 bels (typical)
3.0 bels (max)
2.8 bels (typical)
3.0 bels (max)
Non-recoverable read errors 1 per 10
14
bits read 1 per 10
14
bits read
Annulized Failure Rate (AFR) 0.34% 0.34%
Warranty To determine the warranty for a specific drive, use a web browser to access the following web
page: support.seagate.com/customer/warranty_validation.jsp
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 2 Drive specifications summary for 500GB and 320 models
Drive Specification
ST3500413AS ST3320413AS
Formatted capacity (512 bytes/sector)* 500GB 320GB
Guaranteed sectors 976,773,168 625,142,448
Heads 2 2
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
Table 1 Drive specifications summary for 1000 and 750 models (continued)
Drive Specification ST31000524AS ST3750525AS