Quoting Monte Milanuk <memilanuk at gmail.com>: > M. Hamzah Khan wrote: >> On Sun, 2009-11-08 at 10:44 -0800, Monte Milanuk wrote: >> >> What I think most people do (and what I am doing now), is to setup >> RAID-1 or so behind the volume group. This way you will still be safe if >> one of the drives fail. Keep in mind that RAID is not a backup solution, >> and you should still create regular backups. :) >> > > In practical terms, it may all be a moot point. I'm not too sure how > much more I can jam in that mini-tower case without other problems, and > (hopefully) 500GB should be enough storage for now; intended usage is > just backing up users home directories from a few PCs & laptops in the > house. If I truly intend to implement LVM + RAID it may have to be in a > newer dedicated setup. I think for the time being though, I will look > at removing the 500gb drive from the first volume group and creating a > second one with just it in there. Who knows, I might get brave and > start mucking about w/ software raid and see what I can put together ;) > > I know everyone says RAID is not substitute for a proper backup > solution... but this machine *is* the backup for the rest of the > network. At what point should one draw the line for backing up? What > is there out there that is still reasonably economical for backing up > say, a RAID 1 setup of two 1TB drives, or a RAID 5 setup of three drives > that size? Tape? Looks to be just about out-stripped in size by cheap > hard drives, at least in anything even remotely in my price range. NAS > - which is probably going to have its own version of RAID? well, I'm dealing with this right now, I've taken delivery of a pile of parts that will be a new server Real Soon Now (TM). The four 750 drives will be a sw RAID 0+1 array with striping for performance and mirroring for redundancy. There will be an identical 5th drive in the box and not connected as a spare for 1 drive failure. Then there will be an off-site 1.5T in another box doing rsync as the last line of backup. The reason for sw raid is that I get to use eight opteron cores rather than the dinky cpu on a raid card and that I don't need to be concerned that a replacement raid controller might have a different BIOS than the one I started with. HTH Dave > Thanks, > > Monte > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos > -- When addiction becomes commonplace in a society, people become addicted not only to alcohol and drugs, but to a thousand other destructive pursuits: money, power, dysfunctional relationships, or video games. A social perspective on addiction does not deny individual differences in vulnerability to addiction, but it removes them from the foreground of attention, because social determinants are more powerful.