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SEAGATE ENTERPRISE PERFORMANCE 15K HDD AND ENTERPRISE TURBO SSHD SAS PRODUCT MANUAL, REV. B 19
6.3 DC power requirements
The voltage and current requirements for a single drive are shown below. Values indicated apply at the drive connector.
The standard drive models and the SED drive models have identical har dware, however the security and encryption portion of the drive
controller ASIC is enabled and functional in the SED models. This represents a small additional drain on the 5V supply of about 30mA and
a commensurate increase of about 150mW in power consumption. There is no additional drain on the 12V supply.
Table 2 300GB models DC power requirements
Notes
300GB Base - Hybrid
3.0 Gb mode 6.0 Gb mode
Parameter (Amps) (Amps) (Amps) (Amps)
Voltage +5V +12V [2] +5V +12V [2]
Regulation [5] ±5% ±5% [2] ±5% ±5% [2]
Avg idle current DC [1] [7] 0.34 0.26 0.34 0.26
Advanced Idle Current
Idle1 3σ 0.39 0.29 0.40 0.28
Idle2 3σ 0.29 0.25 0.29 0.24
Idle3 3σ 0.34 0.19 0.29 0.12
Standby 3σ 0.27 0.01 0.27 0.01
Maximum Start current
DC (peak DC) 3σ [3] 0.72 0.99 0.74 0.98
AC (peak AC) 3σ [3] 0.91 1.64 0.92 1.62
Delayed motor start (max) DC 3σ [1] [4] 0.27 0.01 0.27 0.01
Peak operating current: (random read)
Typical DC [1] [6] 0.42 0.46 0.42 0.46
Maximum DC 3σ [1] 0.51 0.49 0.50 0.49
Maximum (peak) DC 3σ 1.96 1.42 1.89 1.43
Peak operating current: (random write)
Typical DC [1] 0.41 0.43 0.41 0.43
Maximum DC 3σ [1] 0.49 0.47 0.48 0.47
Maximum (peak) DC 3σ 1.15 1.41 1.28 1.47
Peak operating current: (sequential read)
Typical DC [1] 0.78 0.26 0.79 0.26
Maximum DC 3σ [1] 0.85 0.29 0.87 0.28
Maximum (peak) DC 3σ 1.25 0.65 1.09 0.64
Peak operating current: (sequential write)
Typical DC [1] 0.63 0.30 0.63 0.30
Maximum DC 3σ [1] 0.76 0.34 0.75 0.34
Maximum (peak) DC 3σ 0.96 0.66 0.91 0.66