Seagate ST3450657SS manual 450 GB DC power requirements, Cheetah 15K.7 SAS Product Manual, Rev. D

Table 15: 450 GB DC power requirements

			3 Gbit mode		6 Gbit mode
		Notes	(Amps)	(Amps)	(Amps)	(Amps)
Voltage			+5V	+12V [2]	+5V	+12V [2]
Regulation		[5]	±5%	±5% [2]	±5%	±5% [2]
Avg idle current		[1] [7]	0.39	0.68	0.41	0.66
Maximum starting current
(peak DC) DC	3σ	[3]	0.65	1.94	0.67	1.94
(peak AC) AC	3σ	[3]	0.94	3.91	0.96	3.89
Delayed motor start (max) DC	3σ	[1] [4]	0.54	0.04	0.56	0.04
Peak operating current (random read):
Typical DC	[1][6]	[1]	0.45	1.01	0.47	1.02
Maximum DC	3σ	[1]	0.48	1.08	0.51	1.06
Maximum DC (peak)	3σ		1.28	2.90	1.30	2.84
Peak operating current (random write):
Typical DC	[1][6]	[1]	0.52	0.90	0.55	0.89
Maximum DC	3σ	[1]	0.56	0.93	0.58	0.91
Maximum DC (peak)	3σ		1.24	2.78	1.26	2.84
Peak operating current (sequential read):
Typical DC	[1][6]	[1]	0.98	0.69	1.03	0.67
Maximum DC	3σ	[1]	1.04	0.70	1.10	0.68
Maximum DC (peak)	3σ		1.36	1.10	1.44	1.10
Peak operating current (sequential write):
Typical DC	[1][6]	[1]	0.95	0.69	0.98	0.67
Maximum DC	3σ	[1]	0.99	0.70	1.02	0.68
Maximum DC (peak)	3σ		1.26	1.10	1.30	1.12

22 Cheetah 15K.7 SAS Product Manual, Rev. D