Hyper-V: Windows Server 2008 should be configured with the recommended amount of memory

Applies To: Windows Server 2008 R2, Windows Server 2012

This topic is intended to address a specific issue identified by a Best Practices Analyzer scan. You should apply the information in this topic only to computers that have had the Hyper-V Best Practices Analyzer run against them and are experiencing the issue addressed by this topic. For more information about best practices and scans, see Best Practices Analyzer.

Operating System

Windows Server 2012 or Windows Server 2008 R2








A virtual machine running Windows Server 2008 is configured with less than the recommended amount of RAM, which is 2 GB.


The guest operating system and applications might not perform well. There might not be enough memory to run multiple applications at once. This impacts the following virtual machines: <list of virtual machine names>


Use Hyper-V Manager to increase the memory allocated to this virtual machine to at least 2 GB.

By default, membership in the local Administrators group, or equivalent, is the minimum required to complete this procedure. However, an administrator can use Authorization Manager to modify the authorization policy so that a user or group of users can complete this procedure. For more information, see Using Authorization Manager for Hyper-V Security (http://go.microsoft.com/fwlink/?LinkId=142886).

To increase the memory allocated to a virtual machine

  1. Open Hyper-V Manager. Click Start, point to Administrative Tools, and then click Hyper-V Manager.

  2. In the results pane, under Virtual Machines, select the virtual machine that you want to configure. The state of the virtual machine should be listed as Off. If it is not, right-click the virtual machine and then click Shut Down.

  3. In the Action pane, under the virtual machine name, click Settings.

  4. In the navigation pane, click Memory.

  5. On the Memory page, set the Startup RAM to at least 2 GB and then click OK.

Additional references

For more information about memory and other requirements for Windows Server 2008, see Windows Server 2008 System Requirements (http://go.microsoft.com/fwlink/?LinkId=181496).