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Hewlett-Packard Battery Backup Unit (BBU)
Installation Guide (10 and 30-slot Disk Arrays)
Hewlett-Packard BBUs are customer installable and replaceable. A replacement BBU must be the same type as the BBU
being replaced.
The locations of the BBUs in the 10-slot and 30-slot disk arrays are shown in Figure 1.
.
Battery
backup unit
(BBU)
Front view of 10-slot
deskside disk array
(front bezel removed for clarity)
Install or replace a BBU by performing the following steps. Place a check in the appropriate
Step 1:
Observe antistatic precautions
A BBU is shipped with an ESD kit containing:
ESD wrist strap
ESD conductive sheet
Ground the ESD wrist strap to any unplated metal on
the disk array chassis and fasten the strap to your wrist.
On 30-slot disk arrays, ground the ESD wrist strap to
the metal edge above the rear retaining screws.
On 10-slot disk arrays, ground the ESD wrist strap to
the metal edge around the disk modules.
disk-drive
modules
Battery
backup unit
(BBU)
Front view of 10-slot
rackmount disk array
(front bezel removed for clarity)
SP-A
Rear view, top of a 30-slot disk array, rackmount only
Figure 1.
Step 2:
Prepare to install the BBU
Remove the new BBU from its shipping carton and
place it on a suitable antistatic surface or the ESD con-
ductive sheet.
If installing a BBU in a 10-slot disk array, remove the
front bezel by pulling it off on one side and then the
other.
If installing a BBU in a 30-slot disk array, open the fan
pack by pressing the release button and carefully swing-
ing the fan pack open.
The BBU can be installed or replaced with array power on.
For the 30-slot array, the installation or replacement
be completed and the fan pack closed within two minutes to
avoid a thermal shutdown.
(fan pack not shown for clarity)
as the step is completed.
SP-B
BBU

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   Summary of Contents for HP A3550A - High Availability Disk Arrays Model 20 Storage Enclosure

  • Page 1

    Hewlett-Packard Battery Backup Unit (BBU) Installation Guide (10 and 30-slot Disk Arrays) Hewlett-Packard BBUs are customer installable and replaceable. A replacement BBU must be the same type as the BBU being replaced. The locations of the BBUs in the 10-slot and 30-slot disk arrays are shown in Figure 1.

  • Page 2

    When the latches are locked, the BBU cannot be pulled out again without using the latches. 30-slot disk array, rackmount only rackmount 10-slot disk array deskside 10-slot disk array (fan pack not shown for clarity) Figure 2. Manual Part Number Copyright © 1997 A3661-90003 E0897 Hewlett-Packard Company *PA3661-96003* A3661-96003...

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A3550a 20

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