Overview RAID Levels

Each RAID level has features that are suitable in certain situations, so it is important to carefully consider which RAID level is best suited for a particular purpose.

 

The table below gives an overview of the features for each RAID level.

Features
RAID 0
RAID 1
RAID 1E
RAID 5
RAID 10
RAID 50

Read performance

Best

Poor

Good

Good

Good

Good

Write performance

Best

Poor

Good

Good

Good

Good

Fault-tolerance

Poor

Best

Good

Good

Good

Good

Efficient use of disk capacity

Best

Poor

Poor

Good

Poor

Good

Automatic rebuild

No

Yes

Yes

Yes

Yes

Yes

Minimum number of drives

2

2

3

3

4

6