I have 2 ISA 2006 servers that are Windows NLB. I am going to decomm each server and replace them with 2 new virtual servers with TMG 2010.
I need to do the migration with as little downtime as possible, therfore :
1. Would it be posible to decomm one ISA and replace it with a TMG server while the other ISA box is still in production ?
2. Can a TMG and ISA box work side by side ? Or would I have to decomm both ISA boxes and then power-up the two TMG boxes ?
If anyone has any experience on ISA to TMG migrations into a production environment with little downtime, I'll br glad to hear from oyui.