Seagate BarraCuda Product Manual, Rev. A

13

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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

2.8.2 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.

Table 2

DC power requirements (3-disk: 3TB and 2TB models)

Power dissipation (3-disk values shown)

Avg (watts 25° C)

Avg 5V typ amps

Avg 12V amps

Spinup

—

—

2.0A or 2.5A

Idle2* †

5.40

0.190

0.377

Operating

8.00

0.510

0.462

Standby

0.75

0.136

0.005

Sleep

0.75

0.136

0.005

Table 3

DC power requirements (1-disk: 1TB and 500GB models)

Power dissipation (1-disk values shown)

Avg (watts 25° C)

Avg 5V typ amps

Avg 12V typ amps

Spinup

—

—

2.0

Perf Idle* †

4.6

0.378

0.224

Operating

5.3

0.656

0.243

Standby

0.94

0.350

0.010

Sleep

0.94

0.350

0.010

Note

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