Article Review “RAID – Storage Made Smart”
Written by Harry Fairhead, 23 Nov 2011
This article provides some very good rationale for utilizing Redundant Arrays of Inexpensive Disks (RAID). It describes RAID as connecting multiple drive units together to make them function as a single “virtual” storage device. This allows you to treat the RAID system as if it was a single disk drive, although in most cases, it consists of multiple physical drives.
The article provides three key reasons to use RAID:
· Reliability - As an electromechanical device with moving parts, a hard drive will eventually wear out. By creating redundancy through the multiple drives, you reduce dependence on a single device, which improves reliability of the overall storage.
· Efficiency - A RAID system can be made to appear faster than any of the single drives it consists of by adding the total transfer of the two or more disks the total rate should be higher.
· Scalability - Although you can increase the storage available simply by adding additional drives without the need to tie them together into a single virtual drive, users prefer to see a single storage volume that contains all their data.
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