Table 13 Input Voltage; Table 14 Power Supply Current - Hitachi HDS723020BLA642 Specifications

DC power requirements
6.3
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
+5 Volts Supply
+12 Volts Supply

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
(values in milliamps. RMS)
Idle average
Idle ripple (peak-to-peak)
Low RPM idle
Low RPM idle ripple
Unload idle average
Unload idle ripple
1
Random R/W average
Random R/W peak
Random R/W average(Quiet Seek)
Random R/W peak(Quiet Seek)
Start up (max)
Standby average
Sleep average

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
During run and spin up
5V ± 5%
12V 10%
±
+5 Volts [mA]
Pop Mean
230
330
190
90
190
100
360
690
370
700
1200
170
170
Hitachi hard disk drive specifications
31
Absolute max
Supply rise time
spike voltage
–0.3 to 5.5V
–0.3 to 15.0V
+12 Volts [mA]
Pop Mean
340
290
120
220
290
250
470
1300
400
840
2000
8
8
0 to 5sec
0 to 5sec
Total
[W]
5.2
2.4
4.4
7.4
6.7
0.9
0.9