Steinar H. Gunderson wrote: > Yes, RAID-10 is a much more common configuration for four disks. Same amount > of space, much higher performance (especially write performance in > database-like workloads). The downside is lower reliability -- if you lose > two disks, there's a 50% chance that your RAID goes with it, but that kind of > scenario would typically be in “have backups” land. >
if you lose 1 disk, then when you lose another, there's only a 33% chance that 2nd disk is the mirror of the first :) I would definitely want to have a hot spare regardless. that way when 1 drive dies, it can immediately start re-mirroring it so the window where a 2nd drive failure could cause data loss is narrowed considerably. _______________________________________________ Prime mailing list [email protected] http://hogranch.com/mailman/listinfo/prime
