RAID Operations

I perform RAID sync operations during which I 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, I rebuild and sync RAID 1, RAID 5, and RAID 6 arrays, while in smaller two-bay NAS servers, I am confined to a RAID 1 array. The Bitmap option is disabled in NAS servers that support it to produce comparable results because it speeds up RAID rebuild times.


Rebuild and synchronization times are much longer than with the DS420j, which uses the same SoC. This looked strange, so I conducted these tests two times just to be sure.

RAID Sync Graphs

RAID Rebuild Graphs