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Hyper-V 2012 Support Considerations - Connect IT Community | Kaseya
<main> <article class="userContent"> <h2 data-id="summary"><strong>SUMMARY</strong></h2> <p>Hyper-V 2012 Support Considerations</p> <h2 data-id="issue"><strong>ISSUE</strong></h2> <p></p> <h3 data-id="purpose">Purpose</h3> <p>This article is intended to discuss known software defects in Microsoft Hyper-V 2012 related to Cluster Shared Volumes (CSV), and Microsoft’s supported/recommended configurations and patches required to allow successful 3<sup>rd</sup> party backups of Hyper-V 2012 systems that utilize CSV. Additionally, this article includes information necessary to ensure the default “system” writer is used when backing up Hyper-V guests using the Unitrends Agent.</p> <p>The attached article below includes information detailing required hotfixes for Windows Server 2012 Core from Microsoft, and installation steps. Also included are numerous links to Microsoft resources covering Hyper-V 2012 deployment best practices and networking requirements for CSV as well as numerous diagnostic tools, checklists, and configuration management information as it related to Hyper-V backups.</p> <p>In addition to the attached article, the following information is supported as of release 7.3:</p> <ul><li>For stand-alone Hyper-V servers, backups are executed simultaneously. The number of jobs that run simultaneously is determined by the Maximum Concurrent Backups setting (<b>Settings > Storage and Retention > Backup Devices</b>) and the resource load of the system. It is also important to monitor the resource utilization on the Hyper-V server to determine whether its backups should be staggered.</li> <li>If multiple virtual machines in a clustered environment (CSV) are running on Windows 2012 R2, backups are executed simultaneously.</li> <li>If multiple virtual machines in a clustered environment (CSV) are running on a version of Windows that is older than 2012 R2, the system serializes the backups. Jobs are queued but run one at a time. This is a Windows limitation.</li> </ul> </article> </main>