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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 drive, without loss of data.
Disk Striping (RAID 0)
Striping is a performance-oriented, non-redundant data mapping technique. While Striping is discussed
as a RAID Set type, it actually does not provide fault tolerance. With modern SATA bus technology,
multiple I/O operations can be done in parallel, enhancing performance. Striping arrays use multiple disks
to form a larger virtual disk.
Disk Mirroring (RAID 1)
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 simply reads the data from the other drive.
What Is RAID?