Users Guide

RAID Level Data Availability Read
Performance
Write
Performance
Rebuild
Performance
Minimum Disks
Required
Suggested
Uses
RAID 6 Excellent Sequential reads:
good.
Transactional
reads: Very good
Fair, unless using
writeback cache
Poor N + 2 (N = at
least two disks)
Critical
information.
Databases and
other read
intensive
transactional
uses.
RAID 60 Excellent Very Good Fair Poor X x (N + 2) (N =
at least 2)
Critical
information.
Medium sized
transactional or
data intensive
uses.
N = Number of physical disks
X = Number of RAID sets
No-RAID
In Storage Management, a virtual disk of unknown metadata is considered a No-RAID volume. Storage Management does not support this
type of virtual disks. These must either be deleted or the physical disk must be removed. Storage Management allows Delete and
Rename operation on No-RAID volumes.
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Understanding RAID concepts