On Fri, 2006-03-31 at 20:38 -0600, Ian Pilcher wrote: > Gilboa Davara wrote: > > Forgive my stupid question... but why on earth would you want to setup > > 10 different RAID 5 array? > > I'm not the OP, but one possible reason is to preserve the ability to > add additional drives later. My music collection originally lived on a > set of RAID-1 devices on two drives, then RAID-5 on three drives, and > now RAID-5 on four drives. Only enough free space to copy *one* of the > md devices is required. > > 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 ;) Gilboa
