Friday 10 June 2016

Windows Server 2012 inplace upgrade to Windows 2012 R2

Getting ready for the Windows 2012 R2 release. I was searching for the inplace upgrade procedures but couldn’t see any blog or technet writeup if its supported or how should we get this done.
As expected, Windows  Server 2012 can be upgraded to Windows Server 2012 R2. ie inplace upgrade is supported. I just tested with a standalone HyperV node with the in place upgrade and successfully completed Windows 2012 R2 installation.
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The compatibility check will detect the applications and report in case of any issues.  I had few VMs which was running at the time of upgrade. And thus the compatibility report clearly says that Virtual machines are ON and needs to turned off before starting the upgrade.
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After turning off the VMs, and restarting server, I was able to proceed with the next step.

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And thats all. In approximately 30 minutes, the server got upgraded. HyperV service was all fine and VMs are perfectly running

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