Seagate ST3250310SV manual Drive specification ST31000340SV ST3750330SV ST3500320SV

Table 1:	Drive specifications summary for 1000, 750 and 500 Gbyte models
Drive specification		ST31000340SV	ST3750330SV	ST3500320SV
Formatted capacity (512 bytes/sector)*		1000 Gbytes	750 Gbytes	500 Gbytes
Guaranteed sectors		1,953,525,168	1,465,149,168	976,773,168
Heads		8	6	4
Discs		4	3	2
Bytes per sector		512
Default sectors per track		63
Default read/write heads		16
Default cylinders		16,383
Recording density		1,090 kbits/in max
Track density		150 ktracks/in avg
Areal density		164 Gbits/in2 avg
Internal data transfer rate		1,287 Mbits/sec max
Sustained data transfer rate OD		105 Mbytes/sec max
I/O data-transfer rate		300 Mbytes/sec max
ATA data-transfer modes supported		PIO modes 0–4
		Multiword DMA modes 0–2
		Ultra DMA modes 0–6
Cache buffer		32 Mbytes
Height (max)		26.11 mm (1.028 inches)
Width (max)		101.6 mm (4.000 inches) +/- 0.010 inches
Length (max)		146.99 mm (5.787 inches)
Weight (typical)		677 grams	633 grams	544 grams
Power-on and Standby to ready		17 sec max	15 sec max	13 sec max
Track-to-track seek time		<0.5 msec typical read;
		<1.5 msec typical write
Average seek, read		<16.0 msec typical
Average seek, write		<16.5 msec typical
Startup current (typical) 12V (peak)		2.0 amps
Voltage tolerance (including noise)		5V +10% / -7.5%
		12V +10% / -7.5%
Operating temperature (Drive Case)		0° to 70°C
Non-operating temperature (Drive Case)		–40° to 70°C
Temperature gradient		20°C per hour max (operating)
		30°C per hour max (nonoperating)
Relative humidity		5% to 90% (operating)
		5% to 95% (nonoperating)
Relative humidity gradient		30% per hour max
Wet bulb temperature		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		–60.96 m to 12,192 m
(below mean sea level, max)		(–200 ft. to 40,000+ ft.)
Operational Shock		63 Gs at 2 msec max
Non-Operational Shock		300 Gs at 2 msec max
Vibration, operating		5–22 Hz: 0.25 Gs, Limited displacement
		22–350 Hz: 0.50 Gs
		350–500 Hz: 0.25 Gs

4 SV35.3 Series Serial ATA Product Manual, Rev. B