Item:   Allow writing to multiple volumes concurrently on file-type devices
Origin: Silver Salonen (silver AT ultrasoft DOT ee)
Date:   15.Mar.2010
Status: 

What:   Currently Bacula allows only one volume to be written per device. For
file-type devices (eg. HDD) it would make sense to allow writing multiple
files/volumes concurrently.

Why:    For file-type devices it makes the most sense (at least to me) to use
one job per volume (file) to get the best overview of the existing jobs, to
rotate them and manage them in any other way. When using this type of
configuration, currently one needs as many Bacula devices as many jobs one
wishes to run concurrently. Or virtual changer has to be used. Allowing
writing multiple volumes concurrently would let the configuration be simpler
and more optimized.

Notes:  For backwards-compatibility it would make sense to add a new option
for the limit (eg. "Maximum concurrent volumes"?) and set it to 1 by default.
The limit would also need "Random Access = yes".

-- 
Silver

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