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What is advantage of having disk shadowing/Mirroring ?

April 26, 2017advantage disk mirroring Shadowing

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What is advantage of having disk shadowing/Mirroring ?

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Shadow set of disks save as a backup in the event of disk failure. In most Operating System if any disk failure occurs it automatically switchover to place of failed disk. Improved performance because of most OS support volume shadowing can direct file I/O request to use the shadow set of files instead of the main set of files. This reduces I/O load on the main set of disks.