> Hello there... thanks for all your thoughts and feedbacks...
> 
> > > Indeed, the splitting would be OK, but still: I'm in need 
> > of backing 
> > > up a *big file* which may change in some bytes...
> > 
> > Also you have to make sure that that file doesn't change 
> > while you are backing/splitting it up otherwise you may be 
> > unable to restore it (been there, not pretty trying to 
> > recover a corrupted NTFS filesystem).
> 
> As far as I know by now is that I'd have to backup with backuppc just
> "copies" of VM images. This should mean that on the other side there is
> already a tool which creates copies of those VM images, thus I shouldn't
> need to care about any corruption at all (it's not my duty).

The storage cost may be acceptable if you don't keep many copies of each
backup - e.g. just 7 daily backups.  But you'll still need a lot of
transfer bandwidth, with each VM disk image being copied in its entirety
every day.


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