Netbackup Restore priority problem over duplications
before canceling the duplication job, reduce the number of concurent Drives in the tape storage unit to 9 or less, so that once you cancle, they will not get assigned to another SLP job, and avaliable for restore.
see the netbackup admin guide 2 to understand how EMM allocates the Resources to the jobs.
There is always a little confusion when high priority jobs queue when lower priority jobs that are queued appear to get precedence over resource allocation - an issue we've covered a few times on these pages.
If resources are already in use (e.g. specific media & therefore tape drives) and there are jobs queued that can utilise those resources, then they will take precedence irrespective of the priority of any other queued job that requires some of those same resources (e.g. tape drive).
NetBackup works this way so that it does not unnecessarily keep loading & unloading media - if queued jobs of a lower priority can utilise the loaded media then they will take precedence over a higher priority queued job that would require different media.
Understanding the Job Priority setting on Windows
http://www.symantec.com/business/support/index?page=content&id=HOWTO34237The only time I've personally seen a higher priority (restore) job 'jump in', as it were, is when the lower priority jobs required a media change at which point the higher priority job took control of the drive & the lower priority jobs waited until the drive (or another) became free.
Do you try & mitigate this by wastefully always having one drive free just in case you get a restore request when all drives are being utilised, or do you deal with it as and when it occurs?
