About MSDP load balancing servers
You can configure other NetBackup media servers to help deduplicate data. They perform file fingerprint calculations for deduplication, and they send the unique data segments to the storage server. These helper media servers are called load balancing servers.
A NetBackup media server becomes a load balancing server when two things occur:
You enable the media server for deduplication load balancing duties.
You do so when you configure the storage server or later by modifying the storage server properties.
You select it in the storage unit for the deduplication pool.
See Introduce MSDP load balancing servers gradually.
Load balancing servers also perform restore and duplication jobs.
Load balancing servers can be any supported server type for deduplication. They do not have to be the same type as the storage server.