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disk mirroring

   Also found in: Wikipedia 0.60 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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Disk mirroring is implemented as a block-for-block replica of a file, a logical unit, or a physical disk volume normally using local or remote disk drives for all copies.
Building practical data protection strategies by Moore, Fred / Computer Technology Review
If you are running Windows NT Server, Windows 2000 Server or Novell NetWare, your computer is capable of handling disk mirroring and striping.
Back up your data to survive a disaster; what you should know about ... by Hunton, James E. / Journal of Accountancy
This new ExpressCluster provides the ability to easily choose or change between synchronous and asynchronous disk mirroring modes to meet a wide range of data protection needs.
NEC Corporation of America Provides Superior Integrated Disaster ... by Business Wire
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