Hitachi HDS723020BLA642 - DC Power Requirements

Hitachi hard disk drive specifications
31
6.3 DC power requirements
Damage to the drive electronics may result if the power supply cable is connected or disconnected to the legacy
Power connector while power is being applied to the drive (no hot plug/unplug is allowed). If SATA power supply
cable is connected or disconnected to the SATA power connector, hot plug/unplug is allowed.
6.3.1 Input voltage
Input voltage
During run and spin up
Absolute max
spike voltage
Supply rise time
+5 Volts Supply
5V ± 5%
–0.3 to 5.5V
0 to 5sec
+12 Volts Supply
12V ±10%
–0.3 to 15.0V
0 to 5sec
Table 13 Input voltage
Caution : To avoid damage to the drive electronics, power supply voltage spikes must not exceed
specifications.
6.3.2 Power supply current (typical)
Power supply current
+5 Volts [mA]
+12 Volts [mA]
Total
[W]
(values in milliamps. RMS)
Pop Mean
Pop Mean
Idle average
230
340
5.2
Idle ripple (peak-to-peak)
330
290
Low RPM idle
190
120
2.4
Low RPM idle ripple
90
220
Unload idle average
190
290
4.4
Unload idle ripple
100
250
Random R/W average
1
360
470
7.4
Random R/W peak
690
1300
Random R/W average(Quiet Seek)
370
400
6.7
Random R/W peak(Quiet Seek)
700
840
Start up (max)
1200
2000
Standby average
170
8
0.9
Sleep average
170
8
0.9
Table 14 Power supply current
Except for a peak of less than 100 s duration
1
Random R/W : 40 IOPS / 16 Blocks Random Write and Random Read