Messages in this thread | | | Subject | Re: bkbits.net is down | From | Joshua Penix <> | Date | 27 Jun 2003 21:08:06 -0700 |
| |
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
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |