Seagate Enterprise Capacity 3.5 HDD/Constellation ES Constellation ES (.1) SAS - Page 25
Notes, 0Gb mode, 0Gb mode
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6.2 AC POWER REQUIREMENTS None. 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 hardware, 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 2TB drive (Standard & SED model) DC power requirements Voltage Regulation Avg idle current DCX Advanced idle current Idle_A Idle_B Idle_C/ Standby_Y Standby_Z Transition current Idle_A - Active Idle_B - Active Idle_C - Active Standby - Active Maximum starting current (peak DC) DC (peak AC) AC Delayed motor start (max) DC Peak operating current (random read): Typical DCX Maximum DC Maximum (peak) DC Peak operating current (random write) Typical DCX Maximum DC Maximum (peak) DC Peak operating current (sequential read) Typical DCX Maximum DC Maximum (peak) DC Peak operating current (sequential write) Typical DCX Maximum DC Maximum (peak) DC Notes [5] [1] [7] 3.0Gb mode (Amps) +5V +12V [4] ±5% ±5% [2] 0.24 0.43 0.36 0.42 0.24 0.37 0.24 0.20 0.25 0.02 0.62 1.62 0.76 1.57 0.62 2.41 0.86 2.71 3s [5] 0.62 2.11 3s [5] 0.86 2.70 3s [1] [6] 0.41 0.02 [1] [6] 0.44 0.59 3s [1] 0.47 0.61 3s 1.16 1.62 0.53 0.53 3s 0.56 0.55 3s 1.26 1.62 0.77 0.43 3s 0.81 0.45 3s 1.10 0.73 0.93 0.43 3s 0.97 0.45 3s 1.30 0.66 6.0Gb mode (Amps) +5V +12V [4] ±5% ±5% [2] 0.25 0.37 0.36 0.42 0.25 0.37 0.25 0.20 0.26 0.02 0.62 1.64 0.60 1.57 0.60 2.39 0.98 2.73 0.62 2.11 1.02 2.72 0.41 0.02 0.45 0.61 0.48 0.64 1.16 1.63 0.53 0.52 0.57 0.54 1.26 1.66 0.78 0.42 0.82 0.44 1.10 0.62 0.94 0.42 0.97 0.44 1.34 0.58 CONSTELLATION ES.1 SAS PRODUCT MANUAL, REV. G 19