Primary Inventory Server
A primary server is an Inventory Server instance that uploads snapshots received from all automated audit tasks in Network Inventory. When running multiple Inventory Server instances on distributed networks, it is strongly advised to set one server as primary.
When one instance is set as primary, others become secondary. Secondary servers do not upload audit snapshots. They only run their automated audit and discovery tasks, receive snapshots, and queue their snapshots to wait for the primary server to process them.
NOTE: The primary and secondary server roles apply only to automated (scheduled) audit tasks, which produce massive snapshots whose upload could burden servers. Audit snapshots from on-demand audit tasks are uploaded locally by corresponding Inventory Servers.