APPENDIX
134
Appendix B
Battery Backup Module (ARC-6120-BAT-
xxx)
The SAS RAID controller operates using cache memory. The Bat-
tery Backup Module is an add-on module that provides power to
the SAS RAID controller cache memory in the event of a power
failure. The BBM monitors the write back cache on the 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.
BBM Components
Status of BBM
• D13 (Green) : light when BBM activated
• D14 (Red) : light when BBM charging
• D15 (Green) : light when BBM normal
Installation
1. Make sure all power to the system is disconnected.
2. Connector J2 is available for the optional battery backup
module. Connect the BBM cable to the 12-pin battery connector
on the controller.
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