thanks for your respond,
i checked the documentation for backup exec 10 and list of supported hardware, our Tape unit is not on the list, I also checked the device manager and the driver being used is from the manufacture and not Veritas which makes sense if its not a supported device for ver 10. I do not see any of the event id's 7,9,11 or 15 that are related to backup procedure. The operation of the device works fine but it looks like every time the auto-loader changes the media these event id's are generated??
do you know if there are Veritas issued device drivers for the Dell Power-Vault 122T Autoloader LTO2 for Backup Exec Ver.10.0 Rev 5520??