Seagate ST38421A Product Manual - Page 11

U4 Family Product Manual, Rev. D 3 Drive Specification ST32112A ST34311A ST36421A ST38421A Track-to-track seek time (msec typical) 2.0 (read), 2.75 (write) Average seek time (msec typical) 10.5 (read), 11.5 (write) Full-stroke seek time (msec typical) 24.0 (read), 26.0 (write) Average latency (msec) 5.56 msec Power-on to ready (sec typical) 8 sec Standby to ready (sec typical) 7 sec Startup current (typical): 12V (peak) 1.5 amps Seek power (typical) 7.0 watts Idle mode (typical) 3.1 watts Standby mode (typical) 0.8 watts Sleep mode (typical) 0.8 watts Voltage tolerance (including noise) 5V ± 5%, 12V ± 10% Ambient temperature 0° to 55°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 -61 m to 3,048 m (-200 ft to 10,000+ ft) Altitude, nonoperating -122 m to 12,192 m (-400 ft to 40,000+ ft) Shock (Gs at 2 msec) operating nonoperating 63 Gs 300 Gs Vibration, operating 0.5 Gs (0 to peak, 5-350 Hz)