Seagate BARRACUDA ST31000524AS User Manual download pdf (Page 19)

Barracuda SATA Product Manual, Rev. A 19

www.seagate.com

Drive Specifications

*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.

†5W IDLE with DIPLM Enabled

2.7.2 Conducted noise

Input noise ripple is measured at the host system power supply across an equivalent 80-ohm resistive load on the

+12 volt line or an equivalent 15-ohm resistive load on the +5 volt line.

• Using 12-volt power, the drive is expected to operate with a maximum of 120 mV peak-to-peak square-

wave injected noise at up to 10MHz.

• Using 5-volt power, the drive is expected to operate with a maximum of 100 mV peak-to-peak square-

wave injected noise at up to 10MHz.

2.7.3 Voltage tolerance

Voltage tolerance (including noise):

• 5V +10% / -7.5%

• 12V +10% / -7.5%

Table 4 DC power requirements (2-disk)

Power dissipation (2-disk values shown) Avg (watts 25° C) Avg 5V typ amps Avg 12V typ amps

Spinup — — 2.0 (peak)

Idle* † 5.0 0.168 0.337

Idle* † (with offline activity) 5.40 0.153 0.387

Operating 6.57 0.496 0.341

Standby 0.79 0.35 0.01

Sleep 0.79 0.35 0.01

Table 5 DC power requirements (1-disk)

Power dissipation (1-disk values shown) Avg (watts 25° C) Avg 5V typ amps Avg 12V typ amps

Spinup — — 2.0 (peak)

Idle* † 4.60 0.378 0.224

Idle* † (with offline activity) 4.50 0.250 0.240

Operating 6.19 0.656 0.243

Standby 0.79 0.35 0.01

Sleep 0.79 0.35 0.01

Note

Equivalent resistance is calculated by dividing the nominal voltage by the typical RMS read/write current.

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 47 48

No comments

Seagate BARRACUDA ST31000524AS User Manual Page 19