On Saturday, 18 January 2020 6:44:51 PM AEDT Craig Sanders via luv-main wrote: > I personally would never use anything less than RAID-1 (or equivalent, such > as a mirrored pair on zfs) for any storage. Which means, of course, that I'm > used to paying double for my storage capacity - i can't just buy one, I > have to buy a pair. Not as a substitute for regular backups, but for > convenience when only one drive of a pair has died. > > Drives die, and the time & inconvenience of dealing with that (and the lost > data) cost far more than the price of a second drive for raid-1/mirror.
I generally agree that RAID-1 is the way to go. But if you can't do that then BTRFS "dup" and ZFS "copies=2" are good options, especially with SSD. So far I have not seen a SSD entirely die, the worst I've seen is a SSD stop accepting writes (which causes an immediate kernel panic with a filesystem like BTRFS). I've also seen SSDs return corrupt data while claiming it to be good, but not in huge quantities. For hard drives also I haven't seen a total failure (like stiction) for many years. The worst hard drive problem I've seen was about 12,000 read errors, that sounds like a lot but is a very small portion of a 3TB disk and "dup" or "copies=2" should get most of your data back in that situation. -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/ _______________________________________________ luv-main mailing list luv-main@luv.asn.au https://lists.luv.asn.au/cgi-bin/mailman/listinfo/luv-main
