2008/3/5, Jean Christophe Andr? <jean-christophe.andre at auf.org>:
> Nguyen Vu Hung a ?crit :
>
> > TFS, how good is BackupPC compression?
>
> As good as gzip, bzip2 or anything you want since it's using the
> Compress::Zlib Perl library by default but allows to enter any
> compression program path.
>
> But before trying to compress at the best level you should take in
> account the fact that compression is hard on CPU and may slow down the
> backup process.
>
bzip2's compression ratio is 155% better than zlib, but it does use
more system resouce.
If you don't don't want to stress your server, def. zlib is the best choice.
In case you want to a better comperssion ratio while sacrifice a
little system resouce,
I would recommend lzma.
>
> > how big is your HDD and how much space does it require for a full backup
> and an incremental backup?
> >
>
> This question is very data dependent so I can not give a general answer.
>
I know it well because my thesis was on Information theory :)
> This software (BackupPC) really is a "Must Try" for any networked
> environment (but not really for single PC at home) and I warmly
> recommend it.
Thanks. I'll try it at home.
--
Best Regards,
Nguyen Hung Vu ( Nguy?n V? H?ng )
vuhung16plus{[email protected]
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