On most situations you will be using one of the following four levels of RAIDs.
RAID 0RAID 1RAID 5RAID 10 (also known as RAID 1+0) This article explains the main difference between these raid levels along with an easy to understand diagram.
In all the diagrams mentioned below:
A, B, C, D, E and F – represents blocksp1, p2, and p3 – represents parity RAID LEVEL 0
Following are the key points to remember for RAID level 0.
Minimum 2 disks.Excellent performance ( as blocks are striped ).No redundancy ( no mirror, no parity ).Don’t use this for any critical system. RAID LEVEL 1Following are the key points to remember for RAID level 1.
Minimum 2 disks.Good performance ( no striping. no parity ).Excellent redundancy ( as blocks are mirrored ). RAID LEVEL 5
Following are the key points to remember for RAID level 5.
Minimum 3 disks.Good performance ( as blocks are striped ).Good redundancy ( distributed parity ).Best cost effectiv…