Dell PowerVault MD3620i Owner's Manual - Page 141

Changing the RAID Level of a Disk Group Use the Change RAID Level option to change the RAID level on a selected disk group. Using this option changes the RAID levels of every virtual disk that comprises the disk group. Performance might be slightly affected during the operation. Keep these guidelines in mind when you change the RAID level of a disk group: • You cannot cancel this operation after it begins. • The disk group must be in Optimal status before you can perform this operation. Your data remains available during this operation. • If you do not have enough capacity in the disk group to convert to the new RAID level, an error message appears, and the operation does not continue. If you have unassigned physical disks, use the Disk Group Add Free Capacity (Physical Disks) option to add additional capacity to the disk group. Then retry the operation. To change the RAID level of a disk group: 1 Select the Logical tab. 2 Select the disk group. 3 Select Disk Group Change RAID Level. 4 Select the RAID level (RAID Level 0, RAID Level 1, RAID Level 5, or RAID Level 6). The currently selected option is designated with a dot. 5 Click Yes. The RAID level operation begins. Storage Partitioning A storage partition is a logical entity consisting of one or more virtual disks that can be accessed by a single host or shared among hosts that are part of a host group. The first time you map a virtual disk to a specific host or host group, a storage partition is created. Subsequent virtual disk mappings to that host or host group do not create another storage partition. One storage partition is sufficient if: • Only one attached host accesses all of the virtual disks in the storage array. • All attached hosts share access to all of the virtual disks in the storage array. Configuration: Disk Groups and Virtual Disks 141