3Ware 9550SXU16MLB10 User Guide - Page 74

3ware Disk Manager (3DM 2) Battery Backup Page Figure 27. Battery Backup Page The Battery Backup page appears when you choose Monitor > Battery Backup on the menu bar. Use this page to determine whether a backup battery is present, see details about it, and perform a battery test. Battery Backup Unit. Indicates whether the BBU is present. Firmware. Indicates the BBU firmware version. Serial Number. Indicates the BBU serial number. BBU Ready. Indicates if the BBU is able to backup the 3ware RAID controller or not. If the BBU is "Ready", write cache can be enabled on the 3ware RAID controller. When the status is not "Ready," write caching is automatically disabled on all units attached to the controller. BBU Status. Indicates the status of the BBU. Possibly BBU statuses include the following: „ OK. The BBU is functioning normally. „ Not Present. The BBU was not detected. „ No Battery. No battery pack is installed in the BBU. „ Testing. A battery capacity test is in process. „ Charging.The battery is being charged. Charging of the battery occurs automatically if the battery voltage falls too low. This normally occurs about once a week to top off the charge level; the process does not change the BBU readiness state. If the battery is ever discharged through a backup cycle or if the system power is off for more than two weeks, the battery status changes to 68 3ware 9000 Series Serial ATA RAID Controller User Guide