Dell PowerEdge RAID Controller H800 - Manual (Page 32)

32 Storage Controller Features
Table 3-2. RAID Level Migration
Source
RAID
Level Target
RAID
Level Required
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
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 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 4 or more Yes Increases capacity by
adding disks
PERC7.2_UG.book Page 32 Thursday, March 3, 2011 2:14 PM