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The Setup is as follows:

  • 1x Principal
  • 1x Secondary
  • 1x Witness

If the Witness and Principal are gone (Hardware- or networkfailure), the secondary DB stays offline. I know this is by design. But if the Witness comes back up and the principal stays down, there is no switchover. Why?

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DO you have high safety with automatic fail over enabled in your mirroring settings? With out the automatic fail over enabled the witness wont enable the databases on the secondary server.

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Yes, it's set up to switch automatically and works - IF the witness stays up all the time. – CyberOptic Jan 9 '12 at 12:11

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