Re: Linux backup script

From: Jean-David Beyer (jdbeyer_at_exit109.com)
Date: 09/13/03

  • Next message: Ehud Reshef: "RH9 Install problems" 
    Date: Sat, 13 Sep 2003 08:01:36 -0400

    John Thompson wrote:
    > On 2003-09-10, Ideasman <cpbarton@pacific.net.au> wrote:
    >
    >
    >>I want a backup system that produces many 640 meg files from a huge dir.
    >>Then each file could be burnt to a CD.
    >
    >
    > Ugh. Why not get a tape drive and just write the whole thing to a
    > tape? Tape is far more capacious than CDs and the reusable media makes it
    > cheaper in the long run.
    >
    Right. The VXA-2 tape drive will hold 160GBytes, IIRC.
    >
    >>Manually splitting files is a pain.
    >
    >
    > Yeah. Reminds me of the days of backing up 20MB hard drives onto 360k
    > floppies. Yuck. I hate babysitting backups to change media so I got a tape
    > drive and haven't looked back. Fire it up at night and it's done by
    > morning.
    >
    *I* do not even fire it up at night: cron does.
    >
    >>The Ideal solution is to have a script that compresses a dir tree into
    >>foobar_001.tar.gz files each less then 640 meg and can be extracted
    >>without depending on the other files, are there any scripts/progs that
    >>doo this?
    >
    The VXA-1 and VXA-2 tape drives do hardware compression of the data so
    the software is not slowed down by doing it. I imagine Ecrix (makers of
    VXA series tape drives) are not unique in offering hardware compression.
    >
    > afio will compress files individually before it writes the archive; that
    > way if there is a problem with a particular file or files the unaffected
    > files can still be extracted from the archive. With tar a single problem
    > in a compressed archive can render everything past that point useless.
    > 

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