RAID LEVEL 3: Parallel Transfer with Parity
0 1 2 3 4 5 6 10 50 0+1
RAID LEVEL 3: Parallel Transfer with Parity
0 1 2 3 4 5 6 10 50 0+1

The data block is subdivided ("striped") and written on the data disks. Stripe parity is generated on Writes, recorded on the parity disk and checked on Reads.

RAID Level 3 requires a minimum of 3 drives to implement

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Characteristics & Advantages

  • Very high Read data transfer rate
  • Very high Write data transfer rate
  • Disk failure has an insignificant impact on throughput
  • Low ratio of ECC (Parity) disks to data disks means high efficiency

Disadvantages

  • Transaction rate equal to that of a single disk drive at best (if spindles are synchronized)
  • Controller design is fairly complex
  • Very difficult and resource intensive to do as a "software" RAID

Recommended Applications

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