Re: tapes best for backup?
Douglas A. Tutty wrote:
On Fri, Jan 04, 2008 at 04:18:11PM -0600, David Dyer-Bennet wrote:
hat I think of as "minimum acceptable" backup is two offline volumes to
accept backups, used alternately. Anything less leaves you with all
copies of your data online and vulnerable at once -- to a power surge,
lightning strike, malware, or idiot sysadmin ("rm -rf /").
Right, but this is on-line (or near-line) backup. The data on the media
doesn't have to last long, only between backup cycles. What about
archives? Or, do you just keep everything on-line (buy more disks for
the computer and bigger USB drives for backups) and do backups and never
I've been relying primarily on offline archives until very recently, but
I'm *now* primarily relying on the mirrored disks in the server plus two
external backup drives. I keep everything online, disk is so cheap it's
silly not to, and keeping track of all the little bits and pieces is
much easier in the computer than as physical CDs I have to find to look
at an old photo.
I currently expect I'll keep making at least one copy of the optical
media archives (I used to make two, and I haven't formally stopped
making two*yet*) for the off-site copy.
Every few years some of it needs to be rethought, since prices and
available sizes keep fluctuating.
David Dyer-Bennet, email@example.com; http://dd-b.net/