Seagate ST9600204FC, ST9450404FC, ST300MM0026, ST900MM0036, ST900MM0026 manual DC power requirements

6.3DC power requirements

The voltage and current requirements for a single drive are shown below. Values indicated apply at the drive connector. Notes are shown following Table 3.

Table 2: DC power requirements for ST9600204FC model

			2Gb		4Gb
		Notes	(Amps)	(Amps)	(Amps)	(Amps)
Voltage			+5V	+12V [2]	+5V	+12V [2]
Regulation		[6]	±5%	±5% [2]	±5%	±5% [2]
Avg idle current DC		[1] [8]	0.36	0.25	0.38	0.25
Advanced Idle Current
Idle_A	3σ		0.35	0.25	0.38	0.25
Idle_B	3σ		0.25	0.23	0.28	0.22
Idle_C	3σ		0.25	0.10	0.27	0.11
Standby	3σ		0.25	0.06	0.27	0.06
Transition Current
Idle_A - Active	3σ		0.72	1.58	0.76	1.56
Idle_B - Active	3σ		0.66	1.56	0.68	1.56
Idle_C - Active	3σ		0.70	1.56	0.74	1.56
Standby - Active	3σ		0.70	1.66	0.72	1.68
Maximum starting current
(peak DC) DC	3σ	[3]	0.56	0.92	0.58	0.92
(peak AC) AC	3σ	[3]	0.78	1.64	0.78	1.68
Delayed motor start (max) DC	3σ	[1] [5]	0.57	0.06	0.59	0.06
Peak operating current (random read):
Typical DC		[1] [7]	0.43	0.50	0.45	0.50
Maximum DC	3σ	[1]	0.44	0.53	0.46	0.52
Maximum (peak) DC	3σ		1.12	1.56	1.12	1.54
Peak operatig current (random write)
Typical DC			0.47	0.40	0.50	0.39
Maximum DC	3σ		0.50	0.42	0.52	0.41
Maximum (peak) DC	3σ		1.00	1.58	1.04	1.58
Peak operating current (sequential read)
Typical DC			0.85	0.25	0.88	0.24
Maximum DC	3σ		0.87	0.25	0.90	0.25
Maximum (peak) DC	3σ		1.14	0.42	1.18	0.42
Peak operating current (sequential write)
Typical DC			0.81	0.24	0.83	0.24
Maximum DC	3σ		0.82	0.25	0.84	0.25
Maximum (peak) DC	3σ		1.02	0.46	1.06	0.46

22 Savvio 10K.4 FC Product Manual, Rev. A