On Nov 7, 2007 1:32 AM, Arno Lehmann <[EMAIL PROTECTED]> wrote:
> Hi,
>
> 07.11.2007 12:11,, Hydro Meteor wrote::
> > Hello all --
> >
> > Reading the current Bacula User's Guide regarding Migration, I found
> > this sentence:
> >
> > Bacula permits pools to contain Volumes with different Media Types.
> > However, when doing migration, this is *a very undesirable
> > condition*. For migration to work properly, you should use pools
> > containing only Volumes of the same Media Type for all migration
> jobs.
> >
> >
> > For example, I have migration resources set up to test migrating Volumes
> > across Devices (defined as Device Resources in the Storage Daemon
> > Configuration) across different Media Types such as from File (e.g.,
> > hard drive) to DVD media type. I only have done one simple test but it
> > seemed to work fine.
> >
> > Why is this "a very undesirable condition"?
>
> What you do is not undesirable. What IS undesirable is if your
> migration source pool contains volumes of different media types.
>
> Like you run incremental backups to a pool using file storage device
> and tape device, and later migrate jobs from both these storages to DVD.
>
> That's probably undesirable because Bacula has to reserve many devices
> to migrate, I suspect.
Arno,
Thank you for clarifying this as it was somewhat ambiguous in the User's
Guide.
Cheers!
>
>
> Arno
>
> > Best,
> >
> > -H
> >
> >
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> --
> Arno Lehmann
> IT-Service Lehmann
> www.its-lehmann.de
>
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