Take a look at the calculator to the right of http://www.microsoft.com/isaserver. This was created to help you make just those decisions... From: isapros-bounce@xxxxxxxxxxxxx [mailto:isapros-bounce@xxxxxxxxxxxxx] On Behalf Of Amy Babinchak Sent: Wednesday, October 18, 2006 6:24 AM To: isapros@xxxxxxxxxxxxx Subject: [isapros] How many ISA servers? Is there a good planning document that can help me decide how many ISA servers to deploy? I've got a large network that I'm working on and I'd like to ditch the vintage NT checkpoint box in favor of ISA. I'm thinking that 2 ISA servers will be the way to go but I'd like to review my thoughts against Microsoft recommendations. Is there such a document? I found one called: Network Concepts in ISA Server 2006 But all it does is list the deployment scenarios doesn't explain how to choose between them. Amy Babinchak All mail to and from this domain is GFI-scanned.