Are there any documents/references describing the effect of network latency/bandwidth
on backup performance when the Mater and Media servers are communicating
over a WAN? This is not for client data backup, but just catalogue related

The typical examples I've been told to watch out for are cases where a lot
of small files are being backed up and the network delay when updating the
catalogue can slow down the backup.

Typical ping roundtrip is 1ms.

Any pointers to reference for Master/Media server protocols (beyond appendix
A of troubleshooting guide) will be appreciated.

This is for Enterprise Server 5.1.

Many thanks