RAID - Overview

RecoverMyFiles

Recover My Files Data Recovery Software | English V4
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RAID Overview

Recover My Files v4 can recover the following types of RAID:

JBOD

JBOD (Just a Bunch Of Disks) is a term to describe the grouping of odd-sized drives into one larger useful drive. Fore example, a JBOD could combine 3 GB, 15 GB, 5.5 GB, and 12 GB drives into a logical drive at 35.5 GB, which is often more useful than the individual drives separately.

RAID 0

A RAID 0 (also known as a stripe set or striped volume) splits data evenly across two or more disks (striped) with no parity information for redundancy. It is important to note that RAID 0 was not one of the original RAID levels and provides no data redundancy. RAID 0 is normally used to increase performance, although it can also be used as a way to create a small number of large virtual disks out of a large number of small physical ones.

A RAID 0 can be created with disks of differing sizes, but the storage space added to the array by each disk is limited to the size of the smallest disk. For example, if a 120 GB disk is striped together with a 100 GB disk, the size of the array will be 200 GB.

RAID 1

RAID 1 is a mirrored set with parity. Typically, it consists of two physical drives, one being an exact copy of the other. The RAID Array continues to operate so long as at least one drive is functioning. Using RAID 1 with a separate controller for each disk is sometimes called duplexing.

RAID 5

A RAID 5 uses block - level striping with parity data distributed across all member disks. Distributed parity means that if a single drive fails the array is not destroyed. Upon a drive failure, any subsequent drive reads can be calculated from the distributed parity of the functioning drives. A single drive failure in the set will result in reduced performance of the entire set until the failed drive has been replaced and rebuilt.