> A: nsrclone -b pool -S ssid1 ssid2 ssid3
>
> and then, after that's been running for a while, I then launch another
> clone operation B to the same pool as:
>
> B: nsrclone -b pool -S ssid4 ssid5
>
> Now, we're assuming that the device is not maxed out so it won't ask for
> another tape in that same pool, and we're also assuming that the data
> that's being read for job A is on a different tape than the data that's
> being read for job B (guess it would have to be or NetWorker would have
> a little fit). I assume it will then start multi-plexing the streams
> from B into those already running from A?

I would have to test it.  My first thought is that B would go to another
tape, not try to multiplex onto another nsrclone job.

> 2. I think this has been asked before and ties in with questions 1.
> What's the advantage of running:
>
> nsrclone -b pool -S ssid1 ssid2 ssid3
>
> versus launching a separate nsrclone operation for each ssid? Is there
> any advantage of one method versus the other?

If 1,2, and 3 are multiplexed onto the same volume, then this way will
read them and write them in a single pass, so they may still be
multiplexed onto the clone.  This is fast.

If the original jobs are multiplexed together and you run it as 3 jobs,
then you have to do three separate reads of the source tape, each
reading data at a lower rate than possible with the media.  This will
make certaint that the data on the clone is not multiplexed (which is
probably good), but it may take too long to perform.

If the savesets are not multiplexed, or they are multiplexed with other
savesets but not with each other, then the two jobs should be roughly
equivalent.



--
Darren Dunham                                           ddunham AT taos DOT com
Senior Technical Consultant         TAOS            http://www.taos.com/
Got some Dr Pepper?                           San Francisco, CA bay area
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