Overview:
Enterprise 2003 Server cluster can be a less costly way to have load balancing on Terminal Servers. However, if not network correctly it can cause all sorts of issues. These issues range from server load to the NLB heartbeat. Citrix has a solution, but the cost is a heavy factor. The “bottom line” comes to cost. The question an ASP has to ask: “What will the users pay?”

To Know:
The cluster must have public IP addresses in order for session directory to work correctly. If a user gets disconnected the TS servers must have a public IP in order for the user to get back to their session that is already open. Microsoft has confirmed this in their white papers. Session Directory PDF