Fail-over of escalation and archive operations

If an escalation or archive operation results in a fail-over from one server to another, escalations or archives running at a fixed time might be skipped or might run twice. An escalation or archive activity might be skipped if it is scheduled to run while the operation is making the transition from one server to another. An escalation or archive activity might be skipped or run twice if the system clocks on the relevant systems are skewed--that is, if the clock settings differ enough to cause a fixed time to be missed or encountered twice.