Quoting Monte Milanuk memilanuk@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@centos.org http://lists.centos.org/mailman/listinfo/centos