Hitachi P7K500 Specifications - Page 51

DC power requirements

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5.5 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. 5.5.1 Input voltage Input voltage +5 Volts Supply +12 Volts Supply During run and spin up 5V ± 5% 12V ±10% Absolute max spike voltage -0.3 to 5.5V -0.3 to 15.0V Supply rise time 0 to 5sec 0 to 5sec Table 28 Input voltage Caution : To avoid damage to the drive electronics, power supply voltage spikes must not exceed specifications. 5.5.2 Power supply current (typical) Power supply current of 2 Disk PATA models (values in milliamps. RMS) Idle average T T Idle ripple (peak-to-peak) T T Low RPM Idle Low RPM Idle Ripple Unload Idle average Unload Idle Ripple Random R/W averageP1P Random R/W peak Start up (max) T T Standby average T T Sleep average T T +5 Volts [mA] T T Pop Mean T T 130 200 80 100 Std Dev 10 10 10 10 80 10 100 10 240 10 700 20 400 20 75 10 65 10 +12 Volts [mA] T T Pop Mean T T 320 300 130 250 Std Dev 15 20 15 20 280 15 300 20 560 15 1500 40 2000 50 5 5 5 5 Table 29 Power supply current of 2 Disk PATA models Except for a peak of less than 100 μs duration. P 1 Random R/W : 40 IOPS / 16 Blocks Random Write and Random Read Total T T [W] T T 4.5 2.0 3.8 7.9 0.5 0.5 HITACHI Deskstar & CinemaStar P7K500 Hard Disk Drive specification (Rev 1.1) 43

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HITACHI Deskstar & CinemaStar P7K500 Hard Disk Drive specification (Rev 1.1)
43
5.5
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.
5.5.1
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 28
Input voltage
Caution
:
To avoid damage to the drive electronics,
power supply voltage spikes must not exceed
specifications.
5.5.2
Power supply current (typical)
Power supply current of
2 Disk PATA models
+5 Volts
[mA]
+12 Volts
[mA]
(values in milliamps. RMS)
Pop Mean
Std Dev
Pop Mean
Std Dev
Total
[W]
Idle average
130
10
320
15
Idle ripple (peak-to-peak)
200
10
300
20
4.5
Low RPM Idle
80
10
130
15
Low RPM Idle Ripple
100
10
250
20
2.0
Unload Idle average
80
10
280
15
Unload Idle Ripple
100
10
300
20
3.8
Random R/W average
1
240
10
560
15
Random R/W peak
700
20
1500
40
7.9
Start up (max)
400
20
2000
50
Standby average
75
10
5
5
0.5
Sleep average
65
10
5
5
0.5
Table 29
Power supply current of 2 Disk PATA models
Except for a peak of less than 100
μ
s duration.
1
Random R/W : 40 IOPS / 16 Blocks Random Write and Random Read