In V1 we have published an update called the Team Foundation Server Quiescence GDR which is basicly a tool we use to shutdown our services during servicing to make sure no outside connections can be made to the server and interrupt the servicing process. Some of our customers faced issues with the original version of the tool that causes their databases to be unavailable or causes the servicing process to fail. I am glad to announce that we have released a new version of the Team Foundation Server Quiescence GDR that addresses this issue and it is available on Microsoft download.