RAID LEVEL 4: Block Level Striping with Dedicated Parity Disk

RAID LEVEL 4: Block Level Striping with Dedicated Parity Disk

0
1
2
3
4
5
6
10
50

RAID 4 consists of block-level striping with a dedicated parity disk. Parity for same rank blocks is generated on Writes, recorded on the parity disk and checked on Reads.
RAID 4 requires at least 3 drives to implement.

Characteristics & Advantages

Very high Read data transfer rate
High random read rate
The ratio of Parity disks to data disks is low, which means higher efficiency

Disadvantages

Controller design is fairly complex
Worst write transaction rate
Data rebuild is difficult and inefficient during disk failure

Recommended Products

Recommended Applications

Video Production and live streaming
Image Editing
Video Editing
Prepress Applications
Any application requiring high throughput