3Ware 7000-2 User Guide - Page 60

3ware Escalade ATA RAID Controller User Guide that is distributed on all drives. If one of the drives is removed, unplugged or fails on read or write requests, the array is marked as DEGRADED and the drive is marked as Not In Use or is not displayed if no longer available (see Figure 19). When running in Degraded mode, the missing data is reconstructed from all nondegraded drives. 3ware Disk Array Configuration Available Drives: Port 0 - QUANTUM FIREBALLP KX27.3 Disk Arrays: Array Unit 1 - 3 drive 64K RAID 5 Port 1 - IBM-DTLA-387815 Port 2 - IBM-DTLA-387815 Port 3 - IBM-DTLA-387815 512 M 1.0GB 512 M 512 M 512 M DEGRADED Not in Use Create Array Delete Array Maintain Array Rebuild Array Alt-F1 Help Previous/Next $ Toggle Hot Spare Enter Select/Deselect F8 Done Esc Cancel F6 Restore Initial Values Figure 19. Degraded RAID 5 Array Drive When Not in Use As in the case of RAID 1 and 10 arrays RAID 5 arrays allow you to read and write data from a degraded disk array, but the array will not be fault tolerant until it is rebuilt using the Rebuild feature. (Refer to the 3ware Disk Array Configuration Utility or 3DM Disk Management Utility chapters for more information.) Rebuilding a mirrored or RAID 5 array with no hot spare 1 Reboot the system and enter the Disk Array Configuration Utility. 60 www.3ware.com