Re: [CentOS] RAIDs and JBOD?

Robert Heller wrote:

No. You can use as many disks as you like for RAID 5. The 'parity' is not actually 1 bit. The capacity of a N disk RAID 5 (where N >= 3), is (N-1)*sizeof(one disk).

within reason. Its usually not a good idea to make a single raid5 set much over 7-8 disks as the repair time becomes brutal, and the performance degradation after a single drive failure is extreme. For very large numbers of drives, build multiple raid5 sets and stripe them (raid 0+5 sometimes called raid 50).

I will say again, I really prefer mirroring and raid 10/0+1 ... disks are cheap, data loss and/or downtime is expensive.