Pivot3 Acuity inline deduplication works globally, which means that deduplication happens across all nodes in a vPG (=storage cluster).
A vPG should not be confused with a vSphere cluster. For example: an 8-node vPG can be split into two 4-node vSphere clusters; two 8-node vPGs can be combined to form a 16-node vSphere cluster.