system recovery locking RDX drive

I'm using system recovery 2013 R2 on a windows 2012 server. this backups to a NAS drive.

We've been having issues since installing in June, where system recovery seems to lock the nas drive. the only way I can eject it, is to right click on the drive in computer and hit eject on the cartridge.

the eject button on the rdx won't even allow a manual eject.

 

The reason i think system recovery is the issue, is that when i eject the cartridge. system recovery notification by the clock pops up saying that the drive is now unavailable. meaning it must be looking at the drive.

I was wondering if i can get it to ignore the drive some how.

I have double checked my settings in system recovery and it does not include the rdx drive for the backup.

any ideas