Test run job fails on media capacity check

[WaltSakir]

I am using Backup Exec 2010 R2 with a Dell powevault TL2000 Tape library.  We use L4 tapes.  My problem is I am trying to backup a server that takes more than one tape to complete.  I associate two tapes to a new media set and change the properties of the job to use the new media set for the destination.  When I run a test run of the job it fails on a media capacity check.  Attached is the message I receive

   

[AmolB]

Don't go as per the test run, it will not give you accurate results.

I would suggest you to run the job itself. 

[Colin_Weaver]

Test runs for media capacity look at what is available at the time of the test job not for the time the backup wil start so can return misleading results for capacity

Also You should not assign media to your media set manually as that will result in the media not being usable as the overwrite protection wil be based on when you last did an action to the tape (in this case the move into the set)

You should (nearly) always let Backup Exec move the media to the set during the job so leave the media in Scratch.