Greg Freemyer <greg.freemyer@gmail.com> writes: >> >> P.S. I'd be really tempted to talk to the person asking you to do >> this, and ask them what they hope to achieve... >> > I can almost envision times it would be useful. i.e. disk speed is > unimportand, disk data rarely changes, but when it does it is very > important, and traditional backups are not feasible for some unknown > reason? > > By having the data written to 2 different places on the disk, the > likelyhood of a failure making it truly unrecoverable is extremely > small. Shall I tell you about the 80GB disk I had that suddenly dropped dead, refusing all form of communication? > ie. If you have disk media problems, likely only one location of the > other will be affected. > > If you have a drive electronics failure, you can ship the drive off to > have recovery performed. (Over $1000 I know, but if the data is > important.) I'd rather pay the $100 for a mirror disk, which is also what I do in my systems, after the lesson learned from the aforementioned failure. I got four new disks, and configured them as RAID5. Within a month, one of them failed. -- Måns Rullgård mru@inprovide.com _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
