RAID stands for Redundant Array of Inexpensive (Independent) Disks. On most situations you will be using one of the following four levels of RAIDs. RAID 0 RAID 1 RAID 5 RAID 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 blocks p1, 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 1 Following 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 ...
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