126 Configuration: Disk Groups and Virtual Disks
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.
When you choose this type of configuration, all of the hosts must have the
same operating system and special software (such as clustering software) to
manage virtual disk sharing and accessibility.
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