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16-Mar-2015 15:18

To support WMI remoting, if Windows Firewall is in use on the cluster nodes, the inbound firewall rule for Windows Remote Management (HTTP-In) must be enabled on each node. To enable self-updating mode and certain CAU features in remote-updating mode, Windows Power Shell 3.0 or 4.0 must be installed and enabled to run remote commands on all cluster nodes.

This section describes the requirements and dependencies that are needed to use Cluster-Aware Updating (CAU) to apply updates to a Windows Server 2012 R2 or Windows Server 2012 failover cluster.

For additional information about best practices and tests for cluster updating readiness, see the following sections later in this topic: You may need to independently validate that your cluster environment is ready to apply updates if you use a plug-in other than Microsoft. If you are using a non-Microsoft plug-in, contact the publisher for more information.

The following table and the remaining sections in this topic summarize additional configuration or software that must be installed on all cluster nodes to remotely support the two CAU updating modes.

These requirements are in addition to the installation requirements for the Install the Failover Clustering feature and the Failover Clustering Tools and the general clustering requirements that are described in previous sections in this topic.

For more information about plug-ins, see How CAU Plug-ins Work.

CAU requires an installation of the Failover Clustering feature and the Failover Clustering Tools.

The exact installation requirements for the Failover Clustering Tools depend on whether CAU coordinates updates as a clustered role on the failover cluster (by using self-updating mode) or from a remote computer running Windows Server 2012 R2, Windows Server 2012, Windows 8.1 or Windows 8 (by using remote-updating mode).

The following are general requirements for a failover cluster to support updates by using CAU.Additional configuration requirements for remote management on the nodes are listed in Configure the nodes for remote management later in this topic.You must use the Failover Clustering Tools from the Windows Server 2012 R2 RSAT to remotely manage updates for a Windows Server 2012 R2 failover cluster.You can also use the Windows Server 2012 R2 RSAT to remotely manage updates on a Windows Server 2012 failover cluster.The Failover Clustering Tools include the CAU tools (clusterawareupdating.dll), the Failover Clustering Windows Power Shell cmdlets, and other components needed for CAU operations.

The following are general requirements for a failover cluster to support updates by using CAU.Additional configuration requirements for remote management on the nodes are listed in Configure the nodes for remote management later in this topic.You must use the Failover Clustering Tools from the Windows Server 2012 R2 RSAT to remotely manage updates for a Windows Server 2012 R2 failover cluster.You can also use the Windows Server 2012 R2 RSAT to remotely manage updates on a Windows Server 2012 failover cluster.The Failover Clustering Tools include the CAU tools (clusterawareupdating.dll), the Failover Clustering Windows Power Shell cmdlets, and other components needed for CAU operations.For steps to install the Failover Clustering feature, see Installing the Failover Clustering Feature and Tools.