Hitachi HDS721050CLA362 - Table 20 Power Supply Current of 2 Disk SATA Models; Table 21 Power Supply Current of 1 Disk SATA Models

HITACHI Deskstar & CinemaStar 7K1000.B & Deskstar E7K1000 Hard Disk Drive specification
27
Power supply current of
2 Disk SATA models
+5 Volts [mA]
+12 Volts [mA]
Total
[W]
(values in milliamps. RMS)
Pop Mean
Std Dev
Pop Mean
Std Dev
Idle average
210
5
280
10
4.4
Idle ripple (peak-to-peak)
200
10
300
10
Low RPM Idle
150
5
120
10
2.2
Low RPM Idle Ripple
100
10
250
10
Unload Idle average
150
5
260
10
3.9
Unload Idle Ripple
100
10
300
10
Random R/W average
1
280
10
560
20
8.2
Random R/W peak
800
30
1700
30
Random R/W average
1
(Quiet Seek)
290
10
350
10
5.7
Random R/W peak(Quiet Seek)
800
30
1500
30
Start up (max)
890
20
1860
40
Standby average
130
5
8
3
0.7
Sleep average
130
5
8
3
0.7
Table 19 Power supply current of 2 Disk SATA models
Except for a peak of less than 100 s duration
1
Random R/W : 40 IOPS / 16 Blocks Random Write and Random Read
Power supply current of
1 Disk SATA models
+5 Volts [mA]
+12 Volts [mA]
Total
[W]
(values in milliamps. RMS)
Pop Mean
Std Dev
Pop Mean
Std Dev
Idle average
230
5
200
10
3.6
Idle ripple (peak-to-peak)
200
10
300
10
Low RPM Idle
170
5
90
10
1.9
Low RPM Idle Ripple
100
10
250
10
Unload Idle average
160
5
190
10
3.1
Unload Idle Ripple
100
10
300
10
Random R/W average
1
(Quiet Seek)
310
10
390
10
6.2
Random R/W peak(Quiet Seek)
800
30
1200
30
Start up (max)
830
20
1910
40
Standby average
150
5
8
3
0.8
Sleep average
140
5
8
3
0.8
Table 20 Power supply current of 1 Disk SATA models
Except for a peak of less than 100 s duration
1
Random R/W : 40 IOPS / 16 Blocks Random Write and Random Read