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Updating windows operating system

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In this section, you will prioritize your application compatibility data, based on the importance of the application to your organization. The available priority levels are: In this section, you will select your organization's assessment rating for an application, based on the 32-bit and 64-bit version of the operating system.

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After organizing your data, you will be able to filter your compatibility data, determine which applications might have compatibility issues, and view the information in customized reports.For more information, see Creating and Editing Issues and Solutions.Cluster OS Rolling Upgrade enables an administrator to upgrade the operating system of the cluster nodes without stopping the Hyper-V or the Scale-Out File Server workloads.A new conceptual cluster mode, called "mixed-OS mode", allows nodes of different versions to exist in the same cluster (see Figure 1).Figure 1: Cluster operating system state transitions A Windows Server 2012 R2 cluster enters mixed-OS mode when a Windows Server 2016 node is added to the cluster.To understand what the rating color means, you must first understand how the underlying community rating works.

There are three available scores, based on the rating for an application.

Using this feature, the downtime penalties against Service Level Agreements (SLA) can be avoided.

Cluster OS Rolling Upgrade provides the following benefits: This guide describes the various stages of the Cluster OS Rolling Upgrade process, installation steps, feature limitations, and frequently asked questions (FAQs), and is applicable to the following Cluster OS Rolling Upgrade scenarios in Windows Server 2016: Cluster OS Rolling Upgrade is fully supported by System Center Virtual Machine Manager (SCVMM) 2016.

The process is fully reversible - Windows Server 2016 nodes can be removed from the cluster and Windows Server 2012 R2 nodes can be added to the cluster in this mode.

The "point of no return" occurs when the Update-Cluster Functional Level Power Shell cmdlet is run on the cluster.

This walkthrough topic describes a scenario of an organization that is planning to deploy a new operating system into its environment, but first requires a more detailed assessment of the potential compatibility issues.