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161

APPENDIX

Appendix B

Battery Backup Module (ARC-6120BA-

T121)

B-1 Overview

The 6Gb/s SAS RAID controller operates using cache memory. The

Battery Backup Module is an add-on module that provides power

to the 6Gb/s SAS RAID controller cache memory in the event of a

power failure. The Battery Backup Module monitors the write back

cache on the 6Gb/s SAS RAID controller, and provides power to the

cache memory if it contains data not yet written to the hard drives

when power failure occurs.

B-2 BBM Components

This section provides the board layout and connector/jumper for

the BBM.

B-3 Status of BBM

• D7 (Green) : light when BBM activated

• D8 (Green) : light when BBM normal

• D9 (Red) : light when BBM charging

Note:

The BBM status will be shown on the web browser of "Hard-

ware Monitor Information" screen.

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