We are looking forward : SteemTurbine
'quotation'
It will be able to securely connect to several servers at once, and detect if they are either down or out-of-sync before the server will actually start missing blocks.
There will be several methods of failing over to back-up servers and/or temporarily disabling the witness server if there is no reliable back-up available.
As an added bonus to server administrators, the tool will be able to send notifications and warnings via Telegram!