Wednesday, June 13, 2012

Differences between RAID100 and RAID 0 arrays?



RAID 100 as stated in Wikipedia is a nested RAID level. It is said that RAID100 is a RAID0 built on RAID10 arrays. From this it follows that on-disk contents of RAID 100 will be exactly the same as in RAID 10 array.

Thus, it is possible to get RAID0 from RAID100 by removing one of the disks of each mirror pair. As fa as recovery aspects is concerned, RAID100 recovery is the same as RAID10 recovery which in turn just boils down to RAID0 recovery.