Raid Levels explained

Top Raid 0 Raid 1 Raid 3 Raid 5 Raid 10 Raid 0+1


RAID 0+1

Provides redundancy by writing all data to four or more drives. RAID 0+1 combines the benefits of RAID level 0 and RAID level 1. This offers both striping and mirroring with no parity generation. The RAID 0+1 also provides high performance and resilience to RAID 5.


Advantages

  • No parity generation
  • Easy to implement
  • Utilises full disk capacity
  • 4 drives minimum
  • Higher performance than RAID 5

Disadvantages

  • Inefficient use of disk space
  • High disk overhead / Expensive
  • Costly to deploy

Applications

  • General File servers
  • Imaging applications
  • Medium size database applications