On Fri, 2006-03-24 at 15:17 +0100, Per Jessen wrote:
All,
probably a little OT here, but I _am_ using SUSE Linux :-)
I'm trying to work out the optimal (or near-optimal at least) RAID configuration of a 24-disk array. The array comes with two redundant RAID controllers each with six SCSI channels. These controllers allow all kinds of RAID0/1/5 configurations, but no RAID6.
I want the array to be able to survive a two disk failure, so RAID6 would be the obvious choice, but ...
So I'm sort of looking at choosing between -
- using plain software RAID6 and ignoring the hardware RAID facilities of the array. - using the hardware controllers to build a combination of RAID0/1/5 that'll give me the two drive failure survivability.
I've had a look around the web, but googling for "two drive failure RAID" almost always leads to someone talking about RAID6 ...
So, opinions/suggestions?
Search around some more for an array controller that provides raid 6, it is the only way you will get "two drive failure" and make sure -all- of the drives are hot swappable. Employ alert notification using SNMP for when a drive fails and have spares on hand at all times. Also look at: http://www.acnc.com/04_01_06.html for more info. -- Ken Schneider UNIX since 1989, linux since 1994, SuSE since 1998