diff --git a/WindowsServerDocs/failover-clustering/cluster-aware-updating.md b/WindowsServerDocs/failover-clustering/cluster-aware-updating.md index fe9887591e..6bed6cbdad 100644 --- a/WindowsServerDocs/failover-clustering/cluster-aware-updating.md +++ b/WindowsServerDocs/failover-clustering/cluster-aware-updating.md @@ -20,12 +20,13 @@ This topic provides an overview of Cluster\-Aware Updating \(CAU\), a feature th ## Feature description Cluster-Aware Updating is an automated feature that enables you to update servers in a [failover cluster](failover-clustering-overview.md) with little or no loss in availability during the update process. During an Updating Run, Cluster-Aware Updating transparently performs the following tasks: -1. Puts each node of the cluster into node maintenance mode. -2. Moves the clustered roles off the node. -3. Installs the updates and any dependent updates. -4. Performs a restart if necessary. -5. Brings the node out of maintenance mode. -6. Restores the clustered roles on the node. +1. Installs the updates and any dependent updates. +2. If updates need a restart. + 1. Puts each node of the cluster into node maintenance mode. + 2. Moves the clustered roles off the node if put into maintenance mode. + 3. Performs a restart. + 4. Brings the node out of maintenance mode. + 5. Restores the clustered roles on the node. 7. Moves to update the next node. For many clustered roles in the cluster, the automatic update process triggers a planned failover. This can cause a transient service interruption for connected clients. However, in the case of continuously available workloads, such as Hyper\-V with live migration or file server with SMB Transparent Failover, Cluster-Aware Updating can coordinate cluster updates with no impact to the service availability.