[SunHELP] native backup tools

[Alan Rubin]

any particular trick to restoring from tape using gzip or does it just
treat it like a normal file?

alan

On Wed, 25 Apr 2001, Doug McLaren wrote:

> On Wed, Apr 25, 2001 at 07:34:51PM -0400, Alan Rubin wrote:
> 
> | is there a solaris native backup tool that can backup and compress a
> | filesystem on the fly to 8mm tape?  can it be done on the fly by adding a
> | simple gnu tool like gzip?  our aim is to backup our legato /index
> | partition/directory to a local tape to help our disaster recovery
> | situation out, but its too big to fit on the native size of a tape (4gb i
> | think).
> 
> Native to Solaris you'd have dump and tar.  You might be able to do
> something like this -
> 
>    dump ... - | gzip -9 > /dev/tape_device
> 
> or
> 
>    tar -cvvf - /nsr-indexes | gzip -9 > /dev/tape_device
> 
> or if you get GNU tar from ftp://prep.ai.mit.edu/pub/gnu/tar, you can
> do this -
> 
>    GZIP=-9
>    export GZIP 
>    tar --totals -zcvvvf /dev/tape_device /nsr_indexes
> 
> Of course, you'll need to have gzip for these -- compress would work
> too, but it doesn't compress nearly as well.  bzip2 compresses a tad
> bit better but it's a lot slower.
> 
> You may find that merely mirroring these files on another computer
> (with rcp, scp or rsync) may be all that you need.
> 
> Note that these files may already be somewhat compressed, which will
> mean that gzip won't be able to compress them much more.  I guess
> you'll have to try it and see first.
> 
> -- 
> Doug McLaren, dougmc at frenzy.com
> Join the collective.                            Meet distinctive individuals.
> Travel to distant eco-spheres.                  And assimilate them.
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> 

_________________
*Alan Rubin*
Sun/Unix/Networking/Web Writing
Email:rubin at ezy.net