Users Guide

Table 5. RAID level migration
Source RAID Level Target RAID Level Number of Physical
Disks (Beginning)
Number of Physical
Disks (End)
Capacity Expansion
Possible
Description
RAID 0 RAID 0 1 2 or more Yes Increases capacity by
adding disks.
RAID 0 RAID 1 1 2 No 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 At least two disk
needs to be added
for distributed parity
data.
RAID 0 RAID 6 1 or more 4 or more Yes At least three disks
need to be added for
dual distributed
parity data.
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
doubling capacity.
RAID 1 RAID 6 2 4 or more Yes Two disks required to
be added for
distributed parity
data.
RAID 5 RAID 0 3 or more 3 or more Yes Converts to a non-
redundant virtual disk
and reclaims disk
space used for
distributed parity
data.
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 At least one disk
needs to be added
for dual distributed
parity data.
RAID 6 RAID 0 4 or more 4 or more Yes Converts to a non-
redundant virtual disk
and reclaims disk
space used for
distributed parity
data.
RAID 6 RAID 5 4 or more 4 or more Yes Removes one set of
parity data and
Features 33