Hello,
From the below link ,first check if your device is compatible.
If it is compatible then install the latest Veritas drivers
Symantec Backup Exec for Windows Servers (tm) 9.x (9.0, 9.1) Hardware Compatibility List. Includes HCL information for supported drives, libraries, virtual tape devices, fibre-channel HBAs, switches, routers/bridges, and iSCSI components. For printing purposes, the latest version of Acrobat is recommended
http://support.veritas.com/docs/282347
Thanks