tape drive shows active , but the ready column shows NO

This particular tape drive is not showing any drives loaded and the Ready column shows NO

/vmdareq -display

HP.ULTRIUM4-SCSI.003 - AVAILABLE
     bellows SCAN_HOST UP
     scooter UP
     fozzie UP
HP.ULTRIUM4-SCSI.004 - AVAILABLE
     bellows SCAN_HOST UP
     scooter UP
     fozzie UP
HP.ULTRIUM4-SCSI.005 - RESERVED on Mon Feb 29 06:07:54 2016
     bellows UP
     scooter UP
     fozzie UP

I dont know a thing about tape drives and all of the link in symantec/ veritas site point to old web pages that no longer work.