We have Backup exec 2014 along with IBM TS3100 Tape Library. I have made partitions defined (one for each day of the week) and all of my jobs run fine. From few weeks we are getting 'Inset overwriteable media into the robotic library' errors very frequently. In JOB settings, I am using "Overwrite media" when this job begins.
We thought it might be dueto tapes, we inserted new un-used tapes but still getting error.