Learn About RAID Levels and Performance

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Use the Array >> Change >> RAID Level pull-down menu option when application read or write percentages on a logical drive indicate that its current RAID level may not be appropriate for desired performance. The Performance Monitor should be used to obtain logical drive application read and write percentages.

Applications with a high read percentage will do very well using RAID level 5 logical drives because of the outstanding read performance of the RAID 5 configuration.

However, applications with a low read percentage (write-intensive) do not perform as well on RAID 5 logical drives because of the way a controller writes data and redundancy data to the drives in a RAID 5 array. If there is a low percentage of read activity relative to write activity, consider changing the RAID level of an array for faster performance.

RAID Level Performance Summary

Related Topics

Learn About RAID Levels and Data Protection

Changing the RAID Level of an Array

Learn About Tuning Storage Subsystem Performance

Monitoring Performance