What is the benchmark performance that can be expected from Exchange Migrator while migrating mailboxes?
Exchange Migrator 1.x
Exchange Migrator 2.x
The transfer rate\performance you experience is largely impacted by your network configuration and the hardware used.
NetIQ has reports of customers that have used Exchange Migrator and had transfer rates of approximately 1.3 Gigabytes per hour over an optimally configured LAN, and approximately 230 Megabytes per hour over a WAN.
These numbers are based on a network that is optimally configured using high-end hardware. These performance numbers are not in anyway guaranteed.