IBM 866011U Hardware Maintenance Manual - Page 49
RAID level 5 logical drives one 500 MB and one, Click on
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RAID level 5 logical drives (one 500 MB and one 1000 MB) and 2800 MB of free space. If you use the logical-drive migration procedure and add a 2150 MB hard disk drive to increase the amount of free space, the end result will be two RAID level 5 logical drives (one 500 MB and one 1000 MB) and 4950 MB of free space. You can increase the size of all the logical drives proportionally in a disk array. This is useful when you want to increase the size of the currently defined logical drives. Refer to the following illustration. Logical Drive 0 Logical Drive 1 500 MB 1000 MB Free Space 2800 MB Disk 1 Disk 2 Disk 3 Before LDM Logical Drive 0 Logical Drive 1 750 MB 1500 MB Disk 1 Free Space Disk 2 Disk 3 After LDM 4200 MB Disk 4 For example, an existing array uses three 2150 MB hard disk drives that are configured as two RAID level 5 logical drives (one 500 MB and one 1000 MB) and 2800 MB of free space. If you use the logical-drive migration procedure and add a 2150 MB hard disk drive to proportionally increase the size of the disk array, the end result will be two RAID level 5 logical drives (one 750 MB and one 1500 MB) and 4200 MB of free space. To add a physical drive: 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 Add Physical Drive(s); then, click on OK. A prompt appears requesting that you select from 1 to 3 Ready (RDY) drives to add to the existing array. 3. Click on the appropriate RDY drives. An X appears beside the selected drive. 4. Click on OK. Netfinity 5500 - Type 8660 41
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