Monthly archives "March 2013"

Network Virtualization with SCVMM 2012 Sp1 – Some key points before start

I was running around this topic for the last few months. Once we had Windows 2012 HyperV Clusters, the next target was to try out network virtualization. Unfortunately, SCVMM 2012 Sp1 was not ready at that time. Recently, we got that. We did attempted and few points which I understood now is

  • For enabling communication between a Network Virtualized subnet and a non network virtualized subnet, A Virtualization Gateway needs to be in the middle
  • Virtualization Gateway devices are still under development and major network vendors are getting ready for release
  • Microsoft is coming up with Software-based NV Gateway which will be fully integrated with SCVMM
  • F5 is also coming with Network Virtualization gateway – but time lines are not confirmed

To my knowledge, the whole stuff is amazing but its complicated. Lack of documentation and information makes it complicated and I expect to see more official documentation coming up for NV in the coming days.

If you have any further information to add on, Please comment. I am open for a discussion.



MPIO and Windows 2012 Server

I was trying to configure Multi-path software for a new cluster which is using Dell Compellent storage. Installed MPIO feature and was trying different options to get it configured. However, after each reboot, I still see two disk for each volume.

While trying to discover the Multipath from MPIO graphical interface, I noticed an error.

The program can’t start because MSVCR100.dll is missing from your computer


MPIO Error

If I click on OK, Configuration will continue and end up in a reboot prompt. After reboot, I will still see two disk for each volume.

At last, I got a write-up which gave me a clue that this is a generic error where VC++ redistributable is missing. So on the next node, I tried it and it was successful.

The first step before starting MPIO configuration was installaing Microsoft Visual C++ 2010 Redistributable Package (x64)

And then proceed with MPIO configuration. From MPIO control Panel, Select Discover Multi-Path and then select Compellent from the list of devices listed. After that, Click on Add. System will configure MPIO and may take few minutes to complete.


Configuring MPIO on Windows 2012 Server

Configuring MPIO on Windows 2012 Server

At the end of configurations, a reboot prompt will be displayed. To complete MPIO configuration, Proceed with a reboot.