Currently, in Notes 6.x and 7.x a Notes user is being prompted if he want's to try to switch to another server in case the current server does not respond. This prompts says:

• The server with this database is no longer responding. Should Notes switch to a replica on another server?

Notes 8 introduces a new notes.ini parameter HidePromptFailoverInc =1 that eliminates the prompt by defaulting to yes.

For more information read technote 129494.