There is no separate software licensing for On-premises DVX, except for Datrium ControlShift.
Each Datrium DVX Data Nodes come equiped with an all-inclusive feature set. This means that without exception all Datrium DVX software capabilities are available for use.
Each Compute Node (both Datrium and 3rd party) requires a host license. Compute Nodes in a DVX (made up of 1-128 Compute Nodes plus 1-10 Data Nodes) have access to all software features, including deduplication, compression, erasure coding, native snapshots, and replication.
Datrium also offers Cloud DVX, an SaaS-like integrated service that provides cloud backup capabilities for native DVX snapshots. Cloud DVX has subscription-based pricing.
Datrium ControlShift (SaaS) is optional and can be used for workload mobility and DR orchestration purposes. ControlShift had has subscription-based pricing (per VM per year).