On 08/21/2017 09:56 AM, muha...@assistanz.com wrote:
> 
> It is 500 virtual devices ( disk backup) and not tape, with
autochanger. Even if i create a pool for every backup job, why i still
need a device for each backup job. is there a way to run a multiple
backup jobs with different pool parallel on a 2 virtual device.

Your bus has a finite bandwidth. You can write 500 files one at a time
at full bandwidth each, or you can write 500 in parallel at 1/500th of
the bandwidth each. I fail to see the practical advantage in the latter,
but it's your setup of course.

-- 
Dimitri Maziuk
Programmer/sysadmin
BioMagResBank, UW-Madison -- http://www.bmrb.wisc.edu

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