Viewing Battery Information

The Battery Backup Unit (BBU) is an add-on card that can be attached to 3ware 9750 RAID controllers to supply power from a battery pack in the event of a system power loss. This allows the controller to use write-caching for optimal performance and to preserve data in the event of a system power failure. When fully charged, the battery preserves the contents of the cache memory for up to 72 hours. When power is restored, the cached write data is written to the disks.

You can see information about a battery backup unit attached to your controller in both 3DM2 and 3BM.


	Mac User Note: Disregard the sentence directly above, and use “You can see information about a battery backup unit attached to your controller in 3DM2.”


	Note: When the BBU status is not “Ready,” write caching is automatically disabled on all units attached to the controller

To view information about a BBU in 3DM2

On the menu bar, choose Monitor >> Battery Backup.

The Battery Backup page appears, on which you can see details and status about the unit. This page is refreshed every 30 seconds.

For details about the fields on this page, see Battery Backup page.

Related Topics: Testing Battery Capacity