In nearly all situations, I'll recommend hardware raid controller, with hotswappable hard drives, and at least raid 5 configuration. So you get the performance & size benefit of a bunch of disks, with at least some redundancy to prevent data loss during hardware failure.
> -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On > Behalf Of Scott R. Ehrlich > Sent: Thursday, March 06, 2008 6:58 PM > To: [email protected] > Subject: [BBLISA] Moving from RAID 0 to LVM RAID? > > So I've learned a valuable RAID 0 lesson, and it fortunately was not a > major > catastrophy. I got lucky, and had a workable-enough backup on tape to > make the > user who needed some data happy. > > Now, from the OS side, LVM is an option. Say the RAID controller only > allows > hardware striping or mirroring for logical volumes, but I want to use > more than > two disks, and I don't want the RAID 0 problem again. > > When I get a replacement disk and build the system from the ground up > again, I > could, conceivably, use hardware RAID 1 for the OS on two disks, and > CentOS 5 > 64-bit's LVM for software RAID 5 (or maybe 1+0 if available) on the > remaining > for 4 disks, maybe 3 disks as active and the 4th as a hot spare? > > I've never had much faith in software raid, since it is not hardware- > based, and > there would be a performance hit, but in this case, it could be an > option. > > Insights from the OS-created RAID experience welcome. > > Thanks again. > > Scott > > _______________________________________________ > bblisa mailing list > [email protected] > http://www.bblisa.org/mailman/listinfo/bblisa _______________________________________________ bblisa mailing list [email protected] http://www.bblisa.org/mailman/listinfo/bblisa
