On Wed, 1 Feb 2006, David Liontooth wrote: > We're wondering if it's possible to run the following -- > > * define 4 pairs of RAID 1 with an 8-port 3ware 9500S card > * the OS will see these are four normal drives > * use md to configure them into a RAID 6 array > > Would this work? Would it be better than RAID 15? We're looking for a > very high redundancy system. So you have 8 disks and would end up with 2 disks worth of data... (3 if you used RAID-5) It'll work, but I'm not convinced that you'll gain anything in real terms. Maybe if this machine was going to be locked in a bunker with absolutely zero access for its lifetime? Or live on a space shuttle? I'd be tempted to turn off RAID on the 3ware and run RAID-6 over all 8 drives myself, but I like to keep things simple - to the extent that I'd not even bother with EVMS. Keep as few software layers as possible between the application & the platters... But your application may demand it, so... :) Gordon - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
