On Sat, 2006-04-01 at 10:18 -0600, Ian Pilcher wrote: > Gilboa Davara wrote: > > On Fri, 2006-03-31 at 20:38 -0600, Ian Pilcher wrote: > >> > >> Using LVM to create a single virtual device out of the md devices may > >> make sense, *if* you trust pvmove, which the LVM HOWTO claims doesn't > >> work. > > > > I *don't*. When I add drives to a RAID5 array, I back-up -everything-, > > delete -everything- and rebuild the array from scratch. > > Doing work on RAID live array (with no backup), -even- if you are > > working on another partition is a big no-no in my book. Single > > mistake... single twisted IDE/SCSI/SATA cable tends to be a career > > altering mistake ;) > > > > As I've learned to my sorrow, no amount of RAID will protect you against > a misplaced 'rm -rf'. > > I would love to have a *real* backup of my music collection. > Unfortunately, by "real" I mean some sort of relatively stable media > that can be put in a safe deposit box or something -- i.e. a USB disk > drive is out. To the extent that I've looked, tape solutions are just > too damn expensive. ---- RAID is disaster protection - as in hard drive failure (excepting RAID 0 which has no redundancy and no fault tolerance) Backup to another filesystem whether on tape/external drive/network filesystem/locally stored copies provides a different level of protection. Both fault tolerance (RAID) and file backup are essential for important stuff as they solve different problems. And who among us hasn't done rm -rf /some/path/that/they/regretted/at/some/point And as a child, I'm quite certain I stuck my hand in the flame even though my parents warned me about that. ;-) Craig
