HP 6641 (LA), 6671 (LA), 6642D (US) Drive Specification, ST313021A, ST38410A, ST34313A, ST317221A

U8 Family Product Manual, Rev. B		3
Drive Specification	ST317221A		ST313021A	ST38410A	ST34313A
Full-stroke seek time
(msec typical)			23.0 (read) 25.0 (write)
Average latency (msec)			5.56 msec
Power-on to ready
(sec typical)			10 sec
Standby to ready
(sec typical)			10 sec
Spin down (sec typical)			10 sec
Startup current
(typical) 12V (peak)			1.5 amps
Seek power (typical)			7.0 watts
Read/Write power			6.5 watts
Idle mode (typical)			3.5 watts
Standby/Sleep mode (typical)			0.8 watts
Voltage tolerance			5V ± 5%, 12V ± 10%
(including noise)
Ambient temperature	0° to 60°C (op.), –40° to 70°C (nonop.)
Temperature gradient
(°C per hour max)			20°C
Relative humidity			5% to 90% (op.)
(op. and nonop.)			5% to 95% (nonop.)
Relative humidity, gradient			30% per hour max
Wet bulb temperature (°C max)			29.4 (op.), 40.0 (nonop.)
Altitude, operating	–61 m to 3,048 m (–200 ft to 10,000+ ft)
Altitude (meters below mean sea	–122 m to 12,192 m (–400 ft to 40,000+ ft)
level, max)
Shock, operating
(Gs max at 2 msec)		63
Shock, nonoperating
(Gs max at 2 msec)			350 Gs
Vibration, operating		0.5 Gs (0 to peak, 5–350 Hz)
Vibration, nonoperating			5 Gs (0 to peak, 5–350 Hz)
Drive acoustics
Sound power in bels (10.5 msec)
Idle mode			3.2 (typical), 3.6 (max)
Seek mode			3.5 (typical), 3.9 (max)