Category Archives: Windows Server 2012

Windows 2012 Failover Cluster: VM Priorities in Hyper-V Failover Cluster

VM Priorities in Hyper-V Failover Cluster With Windows 2012 Failover cluster we have now option to “Drain Roles”, in which all VMs on the host gets migrated to other nodes and the drained host gets paused. This is the same logic as with “Start Maintenance mode” in SCVMM.

When the node gets drained, one important attribute/property in the cluster “Priority” plays an important role on how VMs get migrated. Lets go over the Priority in Failover Cluster Resources…

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Windows 2012: Multiple RDP session for a user

Restrict Remote Desktop Services users to single remote desktop sessionAs you might know, we are able to use Remote Desktop Session Host Config mmc on Windows 2008 R2 to remove user restriction to a single session. In Windows 2012, there is no RDS MMC to configure this setting. The setting, however, can be changed by using local group policy editor: gpedit.msc

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Windows Server 2012 Hyper-V Best Practices Checklist

2012 Hyper-V Best Practices Ask Premier Field Engineering (PFE) Platforms blog has a new post listing best practices for Windows Server 2012 Hyper-V deployments. It has great information and strongly suggest you to read this article. It is however just a guideline and do not take all recommendations in the article as a “must”.

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Windows Failover Cluster Hotfixes

imageTechNet Wiki has now Windows 2012 failover cluster hotfix list in addition to 2008. I have been keeping my own list but it is always good to have a working copy maintained by MS.  You can bookmark or subscribe to RSS feeds to get updated with the changes.

Here are the links to resources:

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Windows 2012 Support for HP Proliant G6 Series

imageIf you are still dealing with G6 series HP servers, HP released a new firmware and services pack for Proliant servers which adds Windows 2012 OS support on G6 servers.

This new version adds support to the following servers and options per HP Proliant Release Notes (ProLiant 2013.02.0rev1):

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Debug Logging in SCVMM 2012 SP1

Debug Logging in SCVMM 2012 SP1To troubleshoot VMM issues, a debug tracing can be enabled and captured in SCVMM 2012 SP1 with the help of logman and SCVMM providers. The ETL file can easily be converted to txt file with netsh and can provide useful information on the issue being experienced. Lets go over the steps to enable debug tracing.

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How To Fix Or Reset The WMI

Eğer WMI düzgün çalışmıyorsa veya  Group Policy düzgün uygulanamıyor uzun süreler bilgisayarınızın açılmasını bekliyorsanız, gpupdate/force komutunda hatalar alıyorsanız, event loglarda WMI hataları da görüyorsanız;

Hemen hemen tek çözüm WMI repository repair etmektir. Komutun nasıl kullanıldığını

winmgmt /? ile görülebilir.

 

winmgmt /backup
Backup alınabilir, /restore ile restore edilebilir.

winmgmt /verifyrepository
WMI check için kullanacağınız ilk komuttur.

winmgmt /salvagerepository
Gerçekten repair için kullanılacak ilk komuttur. Eğer hata alınırsa diğer komuta geçilebilir.

winmgmt /resetrepository
Sunucu WMI resetler ilk kurulduğu günkü gibidir.

Extensible Switch Unified Tracing in Hyper-V 3.0: netsh

imageWhile I was building demo/lab for network virtualization, I wanted to see what is going on behind scenes in the virtual switch. One of the features of Hyper-V is unified tracing. Windows 2012 has a new netsh parameters to be able to capture Physical, Virtual machine traffic, and traffic that traverses the Hyper-V virtual switch.

Netsh is a command line utility built in Windows OS.

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