Seagate ST3250311SV, ST3500410SV Drive specifications summary for 1 Tbyte models, ST31000525SV

Table 1:	Drive specifications summary for 1 Tbyte models
Drive specification		ST31000525SV
Formatted capacity (512 bytes/sector)*		1 Tbyte
Guaranteed sectors		1,953,525,168
Heads		4
Disks		2
Bytes per sector		512
Default sectors per track		63
Default read/write heads		16
Default cylinders		16,383
Recording density		1,474 kbits/in max
Track density		236 ktracks/in avg
Areal density		345 Gbits/in2 avg
Internal data transfer rate		1,628 Mbits/sec max
Sustained data transfer rate		140 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)		101.85 mm (4.010 inches)
Length (max)		146.99 mm (5.787 inches)
Weight (typical)		677 grams (1.493 lb.)
Power-on to ready		<10 sec max
Track-to-track seek time		<0.5 msec typical read;
		<1.5 msec typical write
Average seek, read		<8.5 msec typical
Average seek, write		<9.5 msec typical
Startup current (typical) 12V (peak)		2.0 amps
Voltage tolerance (including noise)		5V ± 5%
		12V ± 10%
Operating temperature (Drive Case)		0° to 70°C
Nonoperating temperature		–40° to 70°C
(Drive Case)
Temperature gradient (max)		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 (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		–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 SV35.5 Series SATA Product Manual, Rev. C