Users Guide

See the following table for a list of RLM or OCE options: The source RAID level column indicates the virtual disk RAID level
before the RLM or OCE operation and the target RAID level column indicates the RAID level after the RLM or OCE operation.
Table 6. RAID level migration
Source RAID
Level
Target RAID
Level
Number of Physical
Disks (Beginning)
Number of
Physical Disks
(End)
Capacity
Expansio
n
Possible
Description
RAID 0 RAID 0 1 or more 2 or more Yes Increases capacity by adding
disks.
RAID 0 RAID 1 1 2 Yes Converts a non-redundant virtual
disk into a mirrored virtual disk
by adding one disk.
RAID 0 RAID 5 1 or more 3 or more Yes Adds distributed parity
redundancy; at least one disk
needs to be added.
RAID 0 RAID 6 1 or more 4 or more Yes Adds dual distributed parity
redundancy; at least two disks
need to be added.
RAID 1 RAID 0 2 2 or more Yes Removes redundancy while
increasing capacity.
RAID 1 RAID 5 2 3 or more Yes Maintains redundancy while
adding capacity.
RAID 1 RAID 6 2 4 or more Yes Adds dual distributed parity
redundancy and adds capacity.
RAID 5 RAID 0 3 or more 2 or more Yes Converts to a non-redundant
virtual disk and reclaims disk
space that is used for distributed
parity data; one disk can be
removed.
RAID 5 RAID 5 3 or more 4 or more Yes Increases capacity by adding
disks.
RAID 5 RAID 6 3 or more 4 or more Yes Adds dual distributed parity
redundancy; at least one disk
needs to be added.
RAID 6 RAID 0 4 or more 2 or more Yes Converts to a non-redundant
virtual disk and reclaims disk
space that is used for distributed
parity data; two disks can be
removed.
RAID 6 RAID 5 4 or more 3 or more Yes Removes one set of parity data
and reclaims disk space used for
it; one disk can be removed.
RAID 6 RAID 6 4 or more 5 or more Yes Increases capacity by adding
disks.
RAID 10 RAID 10 4 or more 6 or more Yes Increases capacity by adding
disks; an even number of disks
need to be added.
NOTE: The total number of physical disks in a disk group cannot exceed 32. You cannot perform a RAID level migration and
expansion on RAID levels 50 and 60.
26 Features