Seagate ST33000652SS ユーザーズマニュアル
Constellation ES.2 SAS Product Manual, Rev. D
23
[1]
Measured with average reading DC ammeter.
[2]
Instantaneous +12V current peaks will exceed these values.
[3]
Power supply at nominal voltage. N (number of drives tested) = 6, 35 Degrees C ambient.
[4]
For +12 V, a –10% tolerance is allowed during initial spindle start but must return to ± 5% before reaching
7200 RPM. The ± 5% must be maintained after the drive signifies that its power-up sequence has been
completed and that the drive is able to accept selection by the host initiator.
7200 RPM. The ± 5% must be maintained after the drive signifies that its power-up sequence has been
completed and that the drive is able to accept selection by the host initiator.
Table 2:
3000GB drive (Standard & SED model)
DC power requirements
Notes
3.0Gb mode
6.0Gb mode
(Amps)
(Amps)
(Amps)
(Amps)
Voltage
+5V
+12V [4]
+5V
+12V [4]
Regulation
[5]
± 5% [2]
± 5% [2]
Avg idle current DCX
[1] [7]
0.28
0.50
0.28
0.50
Advanced idle current
Idle_A
0.28
0.50
0.28
0.50
Idle_B
0.26
0.41
0.26
0.41
Idle_C/ Standby_Y
0.26
0.24
0.26
0.24
Standby_Z
0.25
0.01
0.25
0.01
Maximum starting current
(peak DC) DC
3
σ
[5]
0.60
1.71
0.60
1.70
(peak AC) AC
3
σ
[5]
0.82
2.29
0.88
2.23
Delayed motor start (max) DC
3
σ
0.39
0.01
0.39
0.01
Peak operating current (random read):
Typical DCX
[1] [6]
0.48
0.74
0.49
0.74
Maximum DC
3
σ
[1]
0.49
0.75
0.50
0.76
Maximum (peak) DC
3
σ
1.14
1.88
1.16
1.86
Peak operating current (random write)
Typical DCX
0.58
0.60
0.59
0.61
Maximum DC
3
σ
0.60
0.62
0.60
0.62
Maximum (peak) DC
3
σ
1.20
1.86
1.18
1.88
Peak operating current (sequential read)
Typical DCX
0.79
0.48
0.79
0.49
Maximum DC
3
σ
0.83
0.49
0.84
0.50
Maximum (peak) DC
3
σ
1.16
0.88
1.12
0.90
Peak operating current (sequential write)
Typical DCX
0.94
0.48
0.94
0.48
Maximum DC
3
σ
0.98
0.49
0.98
0.50
Maximum (peak) DC
3
σ
1.20
0.88
1.20
0.88