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Glossary
Q
quick init
An array initialized using the Quick Init option is available
immediately, with no on-going background controller activity. All
data written to an array that has been quick initialized is protected.
An array created using this option will remain in a Quick Init state,
and for RAID 5 and 50 write performance will be degraded, until a
verify with fix is run on the array.
R
RAID
Redundant Array of Independent Disks (alternative definition
Redundant Array of Inexpensive Disks). Redundancy, however, is
not a feature of RAID 0.
RAID 0
Single-level array consisting of two or more equal-sized segments
residing on different disks. RAID 0 distributes, or stripes, data
evenly across its respective drives in equal-sized sections. See also
single-level array.
Also known as a stripe set.
RAID 0/1
See RAID 10.
RAID 1
Single-level array consisting of two equal segments residing on
two different disks. Provides redundancy by storing the same data
on two components.
Also known as a mirror set.
RAID 5
Single-level array consisting of at least three equal-sized segments
with the capacity of one segment used for parity data. In a RAID 5,
parity is distributed in stripes across all segments.
UG.book Page 10 Saturday, October 26, 2002 12:08 PM