I've loaded this file from the Veritas support site
The following new devices have been tested and are now supported with
Backup Exec for Windows NT and are included in this driver release (990906).
Sony SDT-11000 DDS4 drive
Sony TSL-11000 DDS4 drive
DELL PowerVault-120T (SONY TSL-11000) drive
(For complete text read the *.txt files after un-packing)