The purpose of this Article is to summarize and illustrate the different ways an Administrator can use to take a XenApp Server Offline for Maintenance purposes.

A XenApp could need to be Isolated from production, either for Maintenance purposes (System or XenApp Updates, for example) or because the Server is unstable and should be removed from available servers.

To Isolate a Server, XenApp Admins can use different methods ...

This Article is based on another nice article written initially in French by Laurent Falguiere.

Windows 2008 Terminal Services introduce a new functionnality called "Drain Mode".

This new functionnality allows Admins to connect to a Terminal Server while Users can not (Only disconnected sessions will be able to reconnect, while new sessions won't be allowed).

Actually, when a server is configured in this mode ...