about avamar hyper-v cluster config

HI

There are a total of 3 hyper-v csv clusters, and the rest of the hypervisors were being backed up using node 2 as the main node.

In the meantime, a failover occurred due to an overload of node 2, so I changed node 3 to the primary node and took a backup. After that, node 2 was restored again, and I changed the backup back to node 2 and performed it.

During this process, the backup file performed on node 3 was performed as a full backup, and the backup performed on node 2 restored after that was performed as a full backup again.
If there is the same data already stored, but if there is a change in the member performing the backup, is the hash value of the stored data changed? I want to know the exact algorithm