Please verify
NetVault - Supported VTLs, Libraries, Tape and Optical Drives to ensure the appliance is supported. NetVault v13.3 supports DDOS 7.5 to 7.13 with DD boost 7.x.
If the Data Domain is running an unsupported DDOS version (6.2, 7.0, 7.1, 7.2, 7.3, or 7.4) and cannot be upgraded at this time, please follow this workaround:
Look for the following stanza on the %NVHOME%/config/boostlayer.cfg file:
[Library]
Version= 7.7
Appliances= 6.2, 7.0, 7.1, 7.2, 7.3, 7.4, 7.5, 7.6, 7.7, 7.8, 7.9, 7.10, 7.11, 7.12
Add the version of the OS used by the Data Domain to the list.