possibleMoves MirrorInternal False True tdx =
  [ ReplaceSecondary tdx
  , ReplaceAndFailover tdx
  ]
possibleMoves MirrorInternal False True tdx =
  [ ReplaceSecondary tdx
  , ReplaceAndFailover tdx
  ]
possibleMoves MirrorInternal False True tdx =
  [ ReplaceSecondary tdx
  , ReplaceAndFailover tdx
  ]