Raid Levels; Overview; Selecting A Raid Level; Table 3-1. Raid Levels - Dell PowerEdge Expandable RAID Controller 3 User Manual

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RAI D L e ve ls

Overview

There are six official RAID levels (RAID 0 through RAID 5.) PERC 3
supports RAID levels 0, 1, 5, 10, and 50. The RAID levels that PERC 3
supports are shown in Table 3-1.
Ta b l e 3 - 1 . R A I D L e v e l s
RAID
Level
0
1
5
1+0
5+0
PERC 3 also supports independent drives (configured as RAID 0.)

Selecting a RAID Level

To ensure the best performance, you should select the optimal RAID level
when you create a system drive. The optimal RAID level for your disk array
depends on a number of factors:
• The number of physical drives in the disk array
• The capacity of the physical drives in the array
• The need for data redundancy
• The disk performance requirements
Type
Standard
Standard
Standard
Combination of RAID 0 and RAID 1
Combination of RAID 0 and RAID 5