On Thursday April 17 2003 01:57 pm, Jon LaBadie wrote:
> On Thu, Apr 17, 2003 at 08:00:32PM +0200, Moritz Both wrote:
> > Hi,
> >
> > who can recommend a configuration which allows us to regulary backup
> >
> > >600 GByte with amanda on Linux?
> >
> > The 600 GByte is the total; we can split it into portions (or
> > partitions) of about 200 GByte. Still, a single level 0 backup may not
> > really fit on a 120 GByte DAT autoloader (6*20, where we already left
> > out the cleaning tape) load. Splitting further will be complicated.
> >
> > The question is - which autoloader or configuration will do this best?
> >
> > Price *is* a criteria. Is DLT autoloader the way to go? Do folks still
> > backup data of this size with DAT?
> >
> > Any hints are appreciated.
>
> Moritz, I'm guessing you did not read or fail to appreciate that amanda
> never does a level 0 of everything at the same time.  If you do daily
> backup runs, and want a weekly level 0 of all your data, amanda will
> nominally backup 1/7 of your 600 GB each day.  Plus incrementals
> of everything else.  Even if your data is not compressible, you should
> have no trouble fitting the data onto a single magazine of 120GB.

The first backup amanda does of a file system will be a level 0.  If he adds 
all the partitions or directories at once he will get a 600 GB backup.  On 
drives or libraries that cannot hold the entire level 0, I've had to start 
things out slowly and add a new file system or two each day.

> OTOH, if you mean to do a level 0 of everything, everytime you backup,
> then "never mind".  Forget my comments.

-- 
Stephen Carville http://www.heronforge.net/~stephen/gnupgkey.txt
===========================================
You have the right to remain helpless. Should you give up this right, 
anything you do will be used against you in a court of law. You have 
the right to an assailant. If you cannot find one yourself, the court 
will release one for you.