Server Failure

If both your primary and backup servers are stopped at the same time, your DRBD resource will be brought into service/activated only when all servers are functional again. This is to avoid data corruption that could result from initiating the resynchronization in the wrong direction. If you are certain that the only operable server was the last server on which the resource was In Service Protected (ISP), then you can force it online by right-clicking the DRBD resource and then selecting Force Mirror Online.