HP A3550A - High Availability Disk Arrays Model 20 Storage... User manual

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Hewlett-Packard Battery Backup Unit (BBU)

Installation Guide (20-slot Disk Arrays)

Hewlett-Packard BBUs are customer installable and replaceable. Areplacement BBU must be the same type as the BBU

being replaced.

The locations of the BBUs in the 20-slot disk arrays are shown in Figure 1.

.

Figure 1.

Install or replace a BBU by performing the following steps. Place a check in the appropriate oas the step is completed.

Step 1: Observe antistatic precautions

ABBU is shipped with an ESD kit containing:

–ESDwriststrap

– ESDconductive sheet

oGround the ESDwrist strap to any unplated metal on

the disk arraychassis and fasten the strap to your wrist.

Step 2: Prepare to install the BBU

oRemove the new BBU from its shipping carton and

place it on a suitable antistatic surface or the ESD

conductive sheet.

oOpen the fan pack by sliding the LOCK/UNLOCKswitch

to the UNLOCKposition and carefully swinging the fan

pack open.

The BBU can be installed or replaced with array power on.

The installation or replacement MUST be completed and the

fan pack closed within two minutes to avoid a thermal shut-

down.

Step 3: Install the BBU

oLocate the slot where the BBU is to be installed (Figure

1) and remove the failed BBU or the BBUfiller panel if

present (Figure 2). To remove the BBU, slide the black

latches toward the center ofthe unit and extract the

BBU.

oInstall the BBU as shown in Figure 2.

oPush the BBU into the disk array chassis until the

latches on the BBU lock and audible clicks are heard.

When the latches are locked,the BBU cannot be pulled

out again without using the latches.

BBU

20-slot deskside and rackmount disk arrays (rear view)

(shown with fan packs removed for clarity)

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Figure 2.

oClose the fan pack by carefully swinging the fan pack

closed and firmly pressing it onto the latch and sliding

the LOCK/UNLOCK switch to the LOCK position.

For more information on BBU installation procedures and

recharge times, see the (EWLETT0ACKARD(IGH!VAILABILITY

3#3)$ISK!RRAY5SER'UIDE.

Squeeze the latches toward the

center of the BBU Remove or install

Manual Part Number

A3232-90008 E0897 Copyright © 1997

Hewlett-Packard Company

*PA3232-96026*

A3232-96026

All manuals and user guides at all-guides.com