Seagate ST9500530NS, ST9160511NS manual Drive specifications summary for 500 and 160 GB models

Table 1:	Drive specifications summary for 500 and 160 GB models
Drive specification		ST9500530NS		ST9160511NS
Formatted Gbytes (512 bytes/sector)*		500		160
Guaranteed sectors		976,773,168		312,581,808
Heads		6		2
Discs		3		1
Bytes per sector		512
Default sectors per track		63
Default read/write heads		16
Default cylinders		16,383
Recording density, KBPI (kbits/in max)		1410
Track density, KTPI (ktracks/in avg.)		200
Areal density, (Gbits/in2 avg)		283
Spindle speed (RPM)		7200
Internal data transfer rate (Mbits/sec max)		1136
Sustained data transfer rate OD (Mbytes/sec max)		95
I/O data-transfer rate (Mbytes/sec max)		300
ATA data-transfer modes supported		PIO modes 0–4
		Multiword DMA modes 0–2
		Ultra DMA modes 0–6
Cache buffer		32 Mbytes
Weight: (maximum)		196 grams (0.43 lbs)		188 grams (0.41 lbs)
Average latency		4.16 msec
Power-on to ready (sec max)		20 sec
Standby to ready (sec max)		6 sec		4 sec
Track-to-track seek time (msec typical)		0.5 read
		0.7 write
Average seek, read (msec typical)		8.0
Average seek, write (msec typical)		8.4
Startup current (typical) 12V (peak)		2.0 amps
Voltage tolerance (including noise)		5V ± 5%
		12V ± 5%
Ambient temperature		5° to 55°C (operating)
		–40° to 70°C (nonoperating)
Temperature gradient (°C per hour max)		20°C (operating)
		20°C (nonoperating)
Relative humidity		5% to 95% (operating)
		5% to 95% (nonoperating)
Relative humidity gradient		20% per hour max
Wet bulb temperature (°C max)		37.7 (operating)
		40.0 (nonoperating)
Altitude, operating		–60.96 m to 3048 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 (max at 2 msec)		70 Gs
Non-Operational Shock (max at 2 msec)		400 Gs
Vibration, operating		5–22 Hz:	0.25 Gs, Limited displacement
		22–350 Hz:	0.50 Gs
		350–500 Hz:	0.25 Gs
Vibration, nonoperating		5–500 Hz: 3.0 Gs

6 Constellation Serial ATA Product Manual, Rev. D