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Re[4]: Backup (hardware) for Linux
Ira Abramov <ira@scso.com> wrote:
>
> On Wed, 15 Jul 1998, Evgeny Stambulchik wrote:
>
> > udif@usa.net (Udi Finkelstein) wrote:
> >
> > > DDS2
> > > Includes hardware compression (I've never heard about a DDS2 drive
> > > with no compression engine built in)
> >
> > For example, SONY SDT-5200. Very good drive. BTW, I think hardware
> > compression isn't important. The compression is usually not very good
> > (like w/ compress(1)),
>
> that's why Amanda (the software I recommended you) gzips up dumps before
> backing up. if I ever get the time, I'll engineer it to switch to bzip2
> maybe. gzip is better comression than the DDS-2's hardware comression.
Does Amanda gzip's on a per-file basis or the whole archive like tar xz? The
latter makes backups extremely unreliable. BRU compresses separate files. Among
free software, cpio and/or afio can do this, too.
Regards,
Evgeny
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