3Ware 9550SXU-12 User Guide - Page 215

Testing Battery Capacity 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 3DM 2 • 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" on page 241. To view information about a BBU in 3BM • At the main 3BM screen, tab to the Information button and press Enter. On the pop-up menu, select Battery Backup and press Enter. The Battery Backup Unit screen appears. The fields on this screen are the same as those available through 3DM. For details about the fields, see "Battery Backup page" on page 241. Testing Battery Capacity Batteries in the BBU need to be replaced periodically. A battery test should be run every four weeks in order to get a reliable estimate of battery capacity, and to determine when it needs to be replaced. The battery test is used to measure the battery's capacity to back up write data. In order to make a reliable estimate of battery capacity, the BBU pre-charges the battery before it proceeds with a full discharge cycle. The battery is automatically charged again after the test completes. The whole process usually takes between 8 and 12 hours. While running the battery test and until charging is completed, write cache is temporarily disabled. • For how to replace the battery, see the installation guide that came with your controller. Documentation is available online at: http://www.3ware.com/support/userdocs.asp www.3ware.com 203