Hi,
Please perform the following steps:
1) deactivate and delete the device in Backup Exec by right clicking on the device.
2) Restart all the Backup Exec Services.
3) Run the Device configuration wizard. It can be found under Tools> Wizards.
* Check for Event Ids 5s, 7s, 9s, 11s, and 15s that may occur on system startup, or during backup.
* Is the device connected to a RAID controller? If yes, ensure that it is connected to a SCSI controller instead. Refer to the following document:
http://support.veritas.com/docs/191488
Hope it helps.
NOTE : If we do not receive your reply within two business days, this post would be marked "assumed answered" and would be moved to "answered questions" pool.
Additional Information :
For information on the recent VERITAS Backup Exec security vulnerabilities, including links to the downloads for the necessary hotfixes, please refer to the following document:
Patch summary for Security Advisories VX05-001, VX05-002, VX05-003, VX05-005, VX05-006, VX05-007
http://seer.support.veritas.com/docs/277429.htm