SLUG Mailing List Archives
Re: [SLUG] Backup rotation schemes
- To: Jon Biddell <jon@xxxxxxxxx>
- Subject: Re: [SLUG] Backup rotation schemes
- From: Minh Van Le <mvanle@xxxxxxxxxxxxxxxx>
- Date: Sun Sep 16 19:01:02 2001
- Cc: slug@xxxxxxxxxxx
Jon Biddell wrote:
> Monthly backups are archived permenantly, weekly tapes re-cycle every 4 weeks.
> The advantage doing a differential, rather than incremental, is that a file
> modified on Monday is also backed up on Tuesday, Wednesday and Thursday.
> With an INCREMENTAL, the Monday file will only be on the Monday tape, as
> the archive bit is reset after backup.
Thus requiring only 2 tapes for a full restore at any time.
All this requires the backup program to change and track the file attributes
right ? which tar & dump don't do.