Seagate ST3640623AS, ST31000333AS, ST31500341AS, ST3160813AS, ST3320813AS manual DC power requirements

Table 4:	DC power requirements
Power dissipation (4-disc values shown)		Avg (watts 25° C)	Avg 5V typ amps	Avg 12V typ amps
Spinup		—	—	2.8 (peak)
Idle*		8.30	0.330	0.530
Idle* (with offline activity)		8.30	0.330	0.530
Operating (40% r/w, 40% seek, 20% inop.)		10.80	0.700	0.610
Seeking (random, 20% idle)		10.10	0.430	0.663
Standby		0.90	0.130	0.021
Sleep		0.90	0.130	0.021

*During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and power to operational levels.

Table 5:	DC power requirements
Power dissipation (1-disc values shown)		Avg (watts 25° C)	Avg 5V typ amps	Avg 12V typ amps
Spinup		—	—	2.0 (peak)
Idle*		5.00	0.250	0.240
Idle* (with offline activity)		5.00	0.250	0.240
Operating (40% r/w, 40% seek, 20% inop.)		9.00	0.648	0.480
Seeking (random, 20% idle)		8.00	0.293	0.470
Standby		1.0	0.15	0.015
Sleep		1.0	0.15	0.015

*During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and power to operational levels

Barracuda 7200.11 Serial ATA Product Manual, Rev. C 13