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disk mirroring
(redirected from Mirror RAID)

    Also found in: Wikipedia 0.09 sec.

The recording of redundant data for fault tolerant operation. Data are written on two partitions of the same disk or on two separate disks within the same system. Disk mirroring uses the same controller. RAID 1 provides mirroring, which was first accomplished only with SCSI drives, but later with ATA (IDE) drives. See disk duplexing and RAID.



Mirroring on a Budget
Arco was one of the first companies to offer RAID 1 mirroring using two inexpensive ATA (IDE) drives. The motherboard cable plugs into a PCI card or the drive bay version (above), and two cables go out to primary and secondary drives. If one fails, the other takes over. (Image courtesy of Arco Computer Products, Inc., www.arcoide.com)

(hardware, storage)disk mirroring - Use of one or more mirrors of a hard disk.


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eSATA can be designed to constantly provide data redundancy through a mirror RAID or through parity protection of two or three drives.
The fast, reliable, economical external SATA by Clark, Joni / Computer Technology Review
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