RAID Levels and Performance

To maximize the performance of an array, select the appropriate RAID level. You can determine the appropriate RAID level by knowing the read and write percentages for the applications that are accessing the array. Use the Performance Monitor to obtain these percentages.

Applications with a high read percentage perform well using RAID Level 5 logical drives or RAID Level 6 logical drives because of the outstanding read performance of the RAID Level 5 and RAID Level 6 configurations. However, applications with a low read percentage (write-intensive) do not perform as well on RAID Level 5 logical drives or RAID Level 6 logical drives. The degraded performance is the result of the way that a writes data and data to the disk drives in a RAID Level 5 or a RAID Level 6 array.

To change the RAID level, select Array >> Change >> RAID Level . Select a RAID level based on this information:

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