[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Bacula-devel] feature request


On Wednesday 30 July 2008 18:27:42 David Boyes wrote:
> > I initially suggested RAIT to the submitter, but he said he was not
> > considering that -- if I remember right RAIT actually requires
>
> something
>
> > like
> > 5 tape drives. Maybe I am wrong on that though, because I looked at
>
> the
>
> > code
> > about 5 years ago.
>
> It's like RAID -- you need one more drive than you want to use to store
> data. The current LLNL RAIT library code supports 2, 3, and 5 drive
> stripes (1+1, 2+1, and 4+1 data+parity). It wouldn't be hard to expand
> that to larger stripe sizes if need be, but probably not all that
> interesting unless done as described below.
>
> >  In any case, once you are talking about an LTO4 drive, it is
>
> currently
>
> > impossible or nearly so to drive it full speed (except possibly by
>
> some
>
> > high
> > end IBM mainframes), so why complicate things when Bacula still lacks
>
> a
>
> > lot
> > of nice features ... :-)
>
> True, although with multiple 10G Ethernets and RTSP you can get pretty
> close to making a LTO4 sweat a little....8-). FICON Express
> multi-pathing is a lovely thing.
>
> Something like this would be more profitably be implemented as a virtual
> volume storage manager independent of a tool like Bacula. Hmm...

Well, we are almost there (to your Virtual Storage Manager) ...   :-)



-------------------------------------------------------------------------
This SF.Net email is sponsored by the Moblin Your Move Developer's challenge
Build the coolest Linux based applications with Moblin SDK & win great prizes
Grand prize is a trip for two to an Open Source event anywhere in the world
http://moblin-contest.org/redirect.php?banner_id=100&url=/
_______________________________________________
Bacula-devel mailing list
Bacula-devel@xxxxxxxxxxxxxxxxxxxxx
https://lists.sourceforge.net/lists/listinfo/bacula-devel


This mailing list archive is a service of Copilotco.