Maxtor ST31000424CS, ST3250312CS, ST3500312CS Drive specifications summary for 1000 Gbyte models

Table 1:	Drive specifications summary for 1000 Gbyte models
Drive specification		ST31000424CS	ST31000322CS
Formatted capacity		1000 Gbytes
(512 bytes/sector)*
Guaranteed sectors		1,953,525,168
Heads		4
Discs		2
Bytes per sector		512
Default sectors per track		63
Default read/write heads		16
Default cylinders		16,383
Recording density		1417 kbits/in max
Track density		236 ktracks/in avg
Areal density		341.5 Gbits/in2 avg
Spindle speed		5,900 RPM
Internal data transfer rate		1285 Mbits/sec max
Sustained data transfer rate		120 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		16 Mbytes	8 Mbytes
Height (max)		26.1 mm (1.028 inches)
Width (max)		101.85 mm (4.010 inches)
Length (max)		146.99 mm (5.787 inches)
Weight (typical)		600 grams (1.323 lb.)
Average latency		5.1 msec
Power-on to ready		<12 sec typical
Standby to ready		<12 sec typical
Track-to-track seek time		<1.0 msec typical read;
		<1.2 msec typical write
Average seek, read		<14.0 msec typical
Average seek, write		<15.0 msec typical
Startup current (typical) 12V (peak)		2.0 amps
Voltage tolerance (including noise)		5V ± 5%
		12V ± 10%
Operating temperature		0° to 75°C
(Drive Case temperature)
Nonoperating temperature (Ambient)		–40° to 70°C
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.)

4 Pipeline HD.2 Series SATA Product Manual, Rev. A