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    SubjectRe: bkbits.net is down
    One thing to consider is that people already whine about bkbits performance,
    it's a heavily used (in the disk arm sense) machine. It's a lot easier to
    just back the data up with BK itself.

    That said, I'm shopping for SCSI RAIDs :) No tapes.

    On Fri, Jun 27, 2003 at 09:08:06PM -0700, Joshua Penix wrote:
    > On Fri, 2003-06-27 at 20:19, Larry McVoy wrote:
    > > On Fri, Jun 27, 2003 at 08:51:40PM -0400, Scott McDermott wrote:
    > > > Larry McVoy on Fri 27/06 17:16 -0700:
    > > > > I don't know if you all realize this but at one point we
    > > > > had corrupted data in several repositories and the backups
    > > > > were also shot.
    > > >
    > > > ever hear of tapes?
    > >
    > > bkbits is 45GB of data and growing. Tapes are completely impractical,
    > > that's why we have hot spares.
    >
    > Boy you do need a good admin :) Done correctly, tapes are quite
    > practical for that amount of data. A LTO or SDLT drive would back the
    > entire 45GB thing up on a single tape, with room for at least one to two
    > more full backups. Granted, you're not going to have tape act as your
    > hot backup, but it is a good third line of defense. Plus data backed up
    > to tape is immune from human or software error that may otherwise affect
    > the hard-drive based data.
    >
    > 45GB of code is very compressible and I'm sure good chunks of that don't
    > change on a weekly basis. I'd imagine you could get a weekly or
    > bi-weekly full backup to tape in the span of about two hours, and then
    > do nightly differentials which would probably be only 15 minutes in
    > length. A filesystem capable of doing snapshots would ensure
    > consistency of the repositories on tape and would prevent you from
    > having to shutdown bkbits while backing up.
    >
    > --Josh
    >
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    --
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    Larry McVoy lm at bitmover.com http://www.bitmover.com/lm
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