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RAID 0 - Explanation and Solutions

RAID 0: Also Known as Striping

On this level, data is striped (dispersed) and stored in multiple HDDs. Improved performance is sought by reading and writing to the HDDs in the array in parallel. In a single HDD, which does not form an array, n blocks of data is stored in Block 0 (D0) through Block n (Dn) on the HDD. When retrieving the data, each block is readout in order. (Fig. 1) Comparatively in a RAID 0 array, data is readout simultaneously from blocks on each HDD. (Fig. 2) Improved performance can be anticipated from RAID 0 with application sthat read/write comparatively large amount of data. Moreover, there is no redundant information overhead, which makes it possible to use the full capacity of the installed HDDs. On the other hand, it is not possible to restore data in case of an HDD failure, therefore one can not expect improvement in data reliability and protection.

SCSI-3 4 Bay