IBM 86601RU Hardware Maintenance Manual - Page 47
Changing RAID levels, Manage Disk Arrays, Advanced, Logical Drive Migration.
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logical drive that is in the okay (OKY) state. During the LDM procedure, the ServeRAID controller changes the state of the FRE logical drive to SYS; then, temporarily uses the SYS drive to perform the migration. When the migration procedure completes, the ServeRAID controller changes the state of the SYS drive back to FRE. Changing RAID levels: You can change (migrate) the RAID levels of currently defined logical drives. Depending upon the current RAID level, you might need to add or remove a hard disk drive before you can change the RAID level. To use the Change RAID Level feature, all of the logical drives within the array must be the same RAID level. The ServeRAID controller supports changing RAID levels as follows: Change two RAID level 0 logical drives to RAID level 5 by adding one hard disk drive Change two RAID level 1 logical drives to RAID level 5 by adding one hard disk drive Change from RAID level 5 to RAID level 0 by removing one hard disk drive To change the RAID level: 1. Click on the icon on the tool bar or select Manage Disk Arrays from the Advanced pull-down menu; then, select Logical Drive Migration. A screen similar to the following appears. Logical Drive Migration Logical Drive Migration Options Change RAID Level Add Physical Drive(s) OK Cancel 2. Select Change RAID Level; then, click on OK. Netfinity 5500 - Type 8660 39
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