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Source RAID
Level
Target RAID Level Number of
Physical Disks
(Beginning)
Number of
Physical Disks
(End)
Capacity
Expansion
Possible
Description
disk into a
mirrored virtual
disk by adding
one disk.
RAID 0 RAID 5 1 or more 3 or more Yes At least one disk
needs to be
added for
distributed parity
data.
RAID 0 RAID 6 1 or more 4 or more Yes At least two 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
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