RAID Operations

We perform RAID sync operations during which we measure the time the NAS needs to complete these tasks; average power consumption for these rebuild and synchronization periods is also measured. In NAS servers with four bays or more, we rebuild and sync RAID 1, RAID 5, and RAID 6 arrays, while in smaller two-bay NAS servers, we are confined to a RAID 1 array. The Bitmap option is disabled in NAS servers that support it to produce comparable results since it speeds up RAID rebuild times.

Synchronization and rebuilding speeds were normal. You cannot skip disk checking with RAID 5 or RAID 6 arrays, regardless of which filesystem is picked. However, you can do so with all other RAID configurations (RAID 0, 1, 10) and in JBOD (Just a Bunch Of Disks).

RAID Sync Graphs

RAID Rebuild Graphs