Scenario: I have two ISA 2006 servers (Windows Server 2003 R2 Std) setup in an array. The ISA servers are acting as a perimeter firewall to our Internet connection.
We are migrating to a new Internet connection but need to keep the existing Internet service running during the process. My thought is that if it is possible I would like to split the Array so we could remove one of the ISA servers and leave the other in-place running the current service (I appreciate we will lose resilience during this process). Once split I would take the other ISA server and configure it for the new connection and then transfer the services we run through the old connection over to the new in a controlled manner. Once all services had been moved I would want to take the old ISA server and connect it back as an Array on the new link.
1) Is this possible?
2) Anyone done this and can advise the process and thinks to watch out for?
3) Is there a better way? (I'm trying not to have to buy new servers but just use existing ones)