Hello,
From the hardware compatibility list given below ,please check if your device is tested. If it is tested then install the latest Veritas drivers.
http://support.veritas.com/docs/278278
Symantec Backup Exec (tm) 10d (10.1) for Windows Servers General Information
Also in the system event log check for event id 7,9 ,11 15.
Let us know the update.
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