HP (Hewlett-Packard) Ultrium Drive Manuale Utente

3 Electrical requirements

PSU requirements

Internal and rack-mounted drives

The drives are specified to operate at 5V±5% and 12V±10%. Any PSU used to power the

drive must be capable of providing 5V nominal (when the drive pulls 5A on the 5V rail) and

12V nominal (when the drive pulls 2A on the 12V rail). HP recommends a 10% buffer when

selecting a power supply source capable of delivering the amperage and power required.

* The current values are calculated based on constant power and minimum power supply voltage.

Power consumption

SCSI Drives

FC Drives

Specification

12V

Maximum voltage

5.25V

13.2V

5.25V

13.2V

Minimum voltage

4.75V

10.8V

4.75V

10.8V

Maximum steady-state current

4.75*A

1.0A

4.75*A

1.0A

Maximum transient current

4.75*A

2.0A

4.75*A

2.0A

Maximum steady-state power

22.5W

12W

17.5W

Maximum transient power

22.5W

24W

22.5W

24W

Maximum noise/ripple

150 mVpp 150 mVpp 150 mVpp 150 mVpp

Internal Drives

External Drives

Power Requirements

<40W

100–240 VAC 50/60 Hz 0.8A max.

5V DC

3.0A typical (4.5A max.)

12V DC

0.8A typical (2.0A max.)

SCSI Drives

FC Drives

Activity

Average

Peak

Average

Idle

15.8W

TBD

Load

18.1W

32.3W

TBD

Write

30.2W

35.3W

TBD