Introduction; Raid - Redundant Array Of Independent Disks; Raid 0 (Striping); Raid 1 (Mirroring) - MSI MS-7160 User Manual

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RAID - Redundant Array of Independent Disks

RAID technology manages multiple disk drives to enhance I/O performance
and provide redundancy in order to withstand the failure of any individual member,
without loss of data. SATA RAID provides two RAID Set types, Striping (RAID 0)
and Mirroring (RAID 1).

RAID 0 (Striping)

Striping is a performance-oriented, non-redundant data mapping technique.
W hile Striping is discussed as a RAID Set type, it actually does not provide fault
tolerance. Striping arrays use multiple disks to form a larger virtual disk.

RAID 1 (Mirroring)

Disk mirroring creates an identical twin for a selected disk by having the
data simultaneously written to two disks. This redundancy provides instantaneous
protection from a single disk failure. If a read failure occurs on one drive, the
system reads the data from the other drive.

Concatenation

Concatenation provides a method for combining drives of different sizes into one
large disk
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Introduction