Datasheet

24 Constellation.2 SAS Product Manual, Rev. G
Table 2: 1000GB drive (Standard & SED model) DC power requirements
Parameter
Voltage Notes +5 V +12 V [4] Power +5 V +12 V [4] Power
Regulation [5] (watts) (watts)
Average Idle Current [1] [7] 0.39 0.15 3.80 0.39 0.16 3.84
Advanced Idle Current
Idle1 0.39 0.16 3.80 0.39 0.16 3.85
Idle2 0.28 0.13 2.92 0.29 0.13 2.97
Idle3 0.28 0.09 2.47 0.29 0.09 2.53
Standby 0.28 0.04 1.87 0.29 0.04 1.93
Maximum Start Current:
DC (Peak DC) 3σ [5] 0.69 0.85 13.59 0.69 0.88 14.02
AC (Peak AC) 3σ [5] 0.94 1.38 21.32 0.90 1.39 21.16
Delayed Motor Start (DC max) 3σ [1] [6] 0.47 0.05 2.94 0.47 0.05 2.99
Peak Operating Current (random read):
Typical DC [1] [6] 0.52 0.31 6.32 0.53 0.31 6.35
Maximum DC 3σ [1] 0.54 0.31 6.45 0.55 0.31 6.50
Maximum DC (peak) 3σ 1.24 0.90 17.00 1.22 0.90 16.90
Peak Operating Current (random write):
Typical DC 0.61 0.28 6.38 0.63 0.27 6.44
Maximum DC 3σ 0.64 0.28 6.52 0.66 0.28 6.65
Maximum DC (peak) 3
σ
1.10 0.90 16.30 1.12 0.92 16.64
Peak operating current (sequential read):
Typical DC 0.86 0.18 6.38 0.86 0.17 6.39
Maximum DC 3σ 0.89 0.18 6.60 0.90 0.18 6.63
Maximum DC (peak) 3σ 1.04 0.34 9.28 1.10 0.36 9.82
Peak operating current (sequential write):
Typical DC 1.00 0.18 7.11 1.00 0.17 7.09
Maximum DC 3σ 1.02 0.18 7.27 1.03 0.18 7.32
Maximum DC (peak) 3σ 1.18 0.36 10.22 1.24 0.36 10.52
(3.0GB) (6.0GB)
+/-5% [2] +/-5% [2]
ST91000640SS ST91000640SS