3Ware 9550SXU-12 User Guide - Page 184
Cancelling a Rebuild and Restarting It with a Different Drive, Setting Background Task Rate
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Maintaining Units Cancelling a Rebuild and Restarting It with a Different Drive When you start a rebuild from 3BM, you cannot cancel it in 3BM interface. However, if you have drives in hot swap bays, you can remove and replace the drive, rescan the controller (Alt-R), and then select a new drive to be used in the rebuild. You can also boot the operating system, launch 3DM, and cancel a rebuild by using the Remove Drive link on the Maintenance page. If your drives are not in hot swap bays and you do not want to boot the operating system and launch 3DM, you can also cancel a rebuild by powering down the system, physically removing a drive, and installing another one that you want to use. Then when you start 3BM, the unit will appear as degraded and you can rebuild it, using the steps described under "Rebuilding Units through 3BM" on page 169. Note: If you want to pause the rebuild process through 3DM, you can do so by setting or changing the rebuild schedule on the Scheduling page. If you set a schedule for rebuilds that does not include the current time, the rebuild process will pause. Setting Background Task Rate In 3DM, you can set the relative performance of background tasks (initializing, rebuilding/migrating, and verifying) in relation to normal I/O activity (reading and writing to disk). Controllers can have separate settings for Rebuild/Migrate Rate and Verify Rate. (Initialization occurs at the Rebuild rate.) To change the background task rate 1 Choose Management > Controller Settings from the menu bar. 2 In the Background Task Rate section of the Controller Settings page, select one of the five radio buttons to indicate the relative task rate for Rebuild and Verify Tasks. The furthest left buttons set the firmware to the fastest rebuild and verify settings. This means that maximum processing time will be given to rebuilds or verifies rather than I/O. The furthest right buttons set the firmware to the slowest rebuild and verify settings, giving maximum processing time to I/O. After you select one of the radio buttons, the page refreshes, and a message at the top confirms the change you have made. 172 3ware SAS/SATA RAID Software User Guide, Version 9.5.1