Hitachi 7K250 - Deskstar - Hard Drive Specifications page 44

1
Random seeks at 40% duty cycle
2
Seek duty = 30%, W/R duty = 45%, Idle duty = 25%
Power supply current of 120
GB and 160 GB models
values in milliamps, RMS
Idle average
Idle ripple (peak-to-peak)
Low RPM idle
Low RPM idle ripple
Unload idle average
Unload idle ripple
Random R/W average
Random R/W peak
2
Silent R/W average
Silent R/W peak
Start up (max)
Standby average
Sleep average
Power supply current of
40GB and 80GB models
values in milliamps, RMS
Idle average
Idle ripple (peak-to-peak)
Low RPM idle
Low RPM idle ripple
Unload idle average
Unload idle ripple
Random R/W average
Random R/W peak
2
Silent R/W average
Silent R/W peak
+5 Volts (mA)
Pop mean Std
dev
280 12
230 40
140 7
220 25
140 7
220 25
430 9
1252 30
470 9
1252 50
870 50
140 9
100 8
+5 Volts (mA)
Pop mean Std
dev
280 12
230 40
140 7
220 25
140 7
220 25
430 9
1252 50
470 9
1252 50
Deskstar 7K250 Hard Disk Drive Specification
+12 Volts (mA)
Pop mean Std dev
375
250
140
170
300
220
590
1600
390
890
1750
20
20
+12 Volts (mA)
Pop mean Std dev
300 12
220 20
130 10
160 20
270 12
200 20
590 12
1720 65
370 12
830 40
30
Total (W)
12 5.9
20
10 2.4
20
13 4.3
20
12 9.2
50
12 7.0
40
50
3 0.9
3 0.7
Total (W)
5.0
2.3
3.9
9.2
6.8