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06-Feb-2021 23:54

Once you have decided to try the CAU feature in Windows Server 2012 to update your failover cluster, you will very quickly apreciate its simplicity and power.CAU allows you to update clustered servers with little or no loss in availability during the update process.And then I am sanity checking that the module was properly installed by listing all the CAU cmdlets.The same cmdlets are included below in text for convenience: To make sure that CAU GUI application was properly installed along with CAU PS cmdlets, you can sanity check that Server Manager is ready to launch CAU, as in the next screen shot.You can then have CAU “connect” to any failover cluster using appropriate administration credentials, and update the cluster on demand For an overview of the scenario, check out the CAU Scenario Overview.

Once you click on this action, it pops up the “Getting Started” wizard page as shown in the next screen shot: As the Getting Started text says, this wizard is smart enough to figure out that you do not have self-updating currently configured on the connected cluster, and automatically offer you the option to add it.Just in case you are wondering, the reason we call it the “CAU clustered role” on this screen is to make sure that you notice that it is a clustered role (aka “resource group”) that can failover and fail back to other cluster nodes.The nice aspect of this design is that CAU self-updating is a clustered service in its own right, that is highly available.This list is auto-populated for you everytime GUI starts up.Then look at the Cluster Action circled in green in the previous screen shot – “Configure cluster self-updating options”.

Once you click on this action, it pops up the “Getting Started” wizard page as shown in the next screen shot: As the Getting Started text says, this wizard is smart enough to figure out that you do not have self-updating currently configured on the connected cluster, and automatically offer you the option to add it.Just in case you are wondering, the reason we call it the “CAU clustered role” on this screen is to make sure that you notice that it is a clustered role (aka “resource group”) that can failover and fail back to other cluster nodes.The nice aspect of this design is that CAU self-updating is a clustered service in its own right, that is highly available.This list is auto-populated for you everytime GUI starts up.Then look at the Cluster Action circled in green in the previous screen shot – “Configure cluster self-updating options”.You would simply configure the updating schedule and let CAU update the cluster 2.