In a pinned, prepopulated LUN scenario, all the data is present at the Edge. You should prioritize only port 7951 so that the Rdisk protocol can transfer newly written data blocks from the Edge blockstore to the data center LUN through Core.

There may be deployments where users and applications accessing data via the Edge in the branch office are not producing new data but instead are mainly reading data from the data center and the LUNs are unpinned, you should prioritize traffic on ports 7950 and 7952 so that the iSCSI read requests for data blocks not present on the Edge blockstore cache can arrive from the data center LUN in a timely manner.

In the case of branch office users who are booting virtual machines from the data center and the LUNs are unpinned, ensure that port 7950 is the top priority for an unpinned LUN and that you prioritize traffic on port 7953 so that boot data is prefetched on this port in a timely manner.