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RAID 5
(redirected from RAID6)

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RAID 5
(Redundant Array of Independent Disks Mode 5) A popular disk subsystem that increases safety by computing parity data and increasing speed by interleaving data across three or more drives (striping). RAID 5 is similar to RAID 3, except that RAID 5 parity is distributed among all drives, whereas RAID 3 uses separate parity drives.

RAID 6
Similar to RAID 5 but not as widely used, RAID 6 performs either two parity computations instead of one, or it performs the same parity computation on overlapping subsets of the data. Using four drives, RAID 6 can recover from two failed disks. See RAID parity, RAID 3, RAID 0 and RAID.

RAID 5 - Speed and Fault Tolerance
With data and parity striped across three or more drives, RAID 5 has been a popular method for obtaining speed and safety.
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In terms of storage, the system is equipped with five ETERNUS DX80 disk array units with an effective RAID6 capacity of 1 petabyte.
Fujitsu Launches Supercomputer for Anticancer Drug Development ... by JCN Newswires
For instance, RAID5, RAID1, and RAID6 can all provide disk redundancy, and the RAID can still process the I/O even when a disk fails.
Storage Expo 2008 by Software World
NumaRAID, which attaches directly to any standard InfiniBand switch, is a RAID6 capable storage system providing sustained data rates of over 1.
StreamScale Unveils NumaRAID - Industry's First Cost-Effective ... by PR Newswire
 
 
 
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