IBM 86607SU Hardware Maintenance Manual - Page 51

Device Management Drive State EMP SBY RDY DHS SHS HSP DDD ONL RBL Drive Information Channel Bay SCSI ID Vendor Serial Number Size State Soft Event Hard Event Misc Event Parity Event PFA 1 2 1 IBM 003056669 1003 MB ONL 0 0 0 0 No Set Device State Rebuild Drive OK 2. Click on the radio button that indicates the desired state. Note If you set a DDD drive to ONL without performing a Rebuild (RBL) operation and that drive is part of a critical (CRT) logical drive, the server might lose data. 3. Click on Set Device State. Rebuilding drives: When a hard disk drives goes defunct (DDD), a Rebuild operation is required to reconstruct the data for the device in its respective disk array. You can rebuild only RAID level 1 and RAID level 5 logical drives. The data stored in stored in RAID level 0 logical drives cannot be reconstructed; therefore, RAID level 0 logical drives are blocked. After the rebuild process completes, you can unblock the RAID level 0 logical drives, which redefines their state as OKY and allows access to them once again. But remember, the RAID level 0 logical drive might contain damaged data. You must re-create, install, or restore the data for the RAID level 0 logical drive from the most recent backup disk or tape. (See "Unblocking logical drives" on page 38 for more information.) To rebuild a drive: 1. Click on the DDD device on the Main Screen of the Administration and Monitoring utility program. 2. Click on Rebuild Device. A screen similar to the following appears. Netfinity 5500 - Type 8660 43