Recommended RAID Level

Select the appropriate RAID level according to the usage.

• Recommended RAID levels are RAID1, RAID1+0, RAID5, RAID5+0, RAID6, and RAID6-FR.

• When importance is placed upon read and write performance, a RAID1+0 configuration is recommended.

• For read only file servers and backup servers, RAID5, RAID5+0, RAID6, or RAID6-FR can also be used for higher efficiency. However, if the drive fails, note that data restoration from parities and rebuilding process results in a loss in performance.

• For SSDs, a RAID5 configuration or a fault tolerant enhanced RAID6 configuration is recommended because SSDs operate much faster than other types of drive. For large capacity SSDs, using a RAID6-FR configuration, which provides excellent performance for the rebuild process, is recommended.

• Using a RAID6 or RAID6-FR configuration is recommended when Nearline SAS disks that have 8TB or more are used. For details on the RAID levels that can be configured with Nearline SAS disks that have 8TB or more, refer to Supported RAID.