RAID 4

From Computing Knowledgebase

RAID 4 is a Level that uses a Dedicated Parity Drive, and is a commonly used implementation of RAID. Level 4 provides block-level striping (like RAID 0) with a dedicated parity disk. If a data disk fails, the parity data is used to create a replacement disk. A disadvantage to Level 4, is that the parity disk can create disk write bottlenecks, severely cutting performance.

RAID Number List

RAID Number List: 0 | 1 | 2 | 3 | 4 | 5 | 6 | 0+1 | 1+0 | 7 | S | JBOD