U Series CE Family Product Manual, Rev. A 3 Track-to-track seek
time (msec typical) 1.2 (read) 2.0 (write)
Average seek time
(msec typical) 8.9
Average seek read
(msec typical) 9.9
Average seek write
(msec typical) 10.9
Full-stroke seek time
(msec typical) 22.0 (read) 24.0 (write)
Average latency
(msec) 5.55 msec
Power-on to ready
(sec typical) 6.5 sec
Standby to ready
(sec typical) 6.5 sec
Spindown
(sec typical) 10 sec
Startup current
(typical) 2.5 amps
Seek power (typical) 7.5 watts
Read/Write power 7.5 watts
Idle mode (typical) 5.0 watts
Standby mode
(typical) 1.2 watts
Sleep mode (typical) 0.9 watts
Voltage tolerance
(including noise) 5V ± 5%, 12V ± 10%
Ambient temperature 0° to 60°C (op.), –40° to 70°C (nonop.)
Temperature gradient
(°C per hour max) 20°C
Relative humidity
(op. and nonop.) 5% to 90% (op.)
5% to 95% (nonop.)
Relative humidity
gradient 30% per hour max
Wet bulb temperature
(°C max) 29.4 (op.), 40.0 (nonop.)
Altitude, operating –60.96 m to 3,048 m (–200 ft to 10,000+ ft)
Drive Specification ST380020ACE ST360020ACE ST340810ACE ST320410ACE