You are an Enterprise administrator for contoso.com. The corporate network of the company consists of a single Active Directory domain. All the servers in the domain run Windows Server 2008 and use internal storage only and all client computers run Windows Vista.
The network contains a file server. You have been assigned the task to deploy a client/server application in minimum cost in such as way that it is available even if a single server fails.
Which of the following features would you deploy to accomplish the desired task?