AMCC 9690SA manual Installing a Battery Backup Unit, Items in Remote Battery Installation Package

Chapter 3. Installing a Battery Backup Unit

The Battery Backup Unit (BBU) is an optional add-on consisting of a control module and a battery pack.

When used with the 3ware 9690SA RAID controller, the BBU control module is mounted on the RAID controller and the battery pack is installed on a remote battery board.

The BBU’s purpose is to supply power to the controller’s memory module in the event of a system power loss. This allows the controller to safely use write-caching for optimal performance without exposing data to potential loss in the event of a system power failure. When fully charged, the battery preserves the contents of the controller cache memory for a limited period of time (up to 72 hours). When power is restored, cached data is written to disks.

Items in Remote Battery Installation Package

„Battery Backup Unit (BBU) control module

„Battery

„Battery extension cable

„Remote battery board with full height bracket

„Low-profile bracket for low-profile enclosures.

„Remote Battery Installation Guide (This chapter covers same material)

163ware 9690SA SAS/SATA RAID Controller Installation Guide