As indicated on NetVault Administrative Guide, clients can be added to a NetVault Server running a version which is equal to or later than the Client version.
For NetVault Server 13.0.0.33, NetVault Client versions prior to 13.0.0.33 can be added
For NetVault Server 12.4.0.16, NetVault Client versions prior to 12.4.0.16 can be added
For NetVault Server 9.1.1, NetVault Client versions prior to 9.1.1 can be added
For NetVault Server 9.0.1, NetVault Client versions prior to 9.0.1 can be added
For NetVault Server 8.6.3, NetVault Client versions prior to 8.6.3 can be added
For NetVault Server 8.5.3, NetVault Client versions prior to 8.5.3 can be added
For example, if the NetVault Server is running version 9.1.1, all versions of NetVault Client prior to 9.1.1 can be protected by the server. If the NetVault Server is running version 9.0.1, all versions prior to 9.0.1 of NetVault Client prior to 9.0.1 can be protected by the server, but version 9.1.1 of the NetVault Client cannot be used.
【Important】
The features available in the NetVault Client depend on the version of that client. For example, if NetVault Server is 9.1.1 and Client is 9.0.1, only features up to NetVault Client Version 9.0.1 are supported by the client. Also, depending on the configuration, the NetVault Client might need to run the same version as the NetVault Server, so please check the release notes as well.
【Reference】
About domain management function (network controllable server)
In NetVault 8.5.x or later, if the version of NetVault Server used for domain management is the same up to the second digit, the domain of NetVault Server can be managed even if the third digit is different. For example, even if NetVault Server is 8.5.3, the domain can be managed with NetVault 8.5. Also, even if NetVault Server is 8.5, the domain can managed with NetVault 8.5.3.
