Saturday, October 03, 2009

Lost your ethernet cards on your VM?

This tip may help you.

We use virtualization A LOT on our environments, as a symbol of trust to this concept we only have half of our web production servers as real machines, the other half is virtualized.

A common issue we found is that after installing SP2 on a Windows 2003 Ent/Standard installation or simply after installing certain security updates on Windows 2003 Ent/Standard R2 installations we lost sometimes the ethernet cards of the Virtual Machines (VM).

Well, the solution is quite simple, this problem usually only happens when you have not installed the client VMware tools, after installing them and restarting the Virtual machine you will be back in business.

Strange? yup. Drove me nuts a couple of times.


Anonymous said...

Frankly, that shows how VM paradigm is forced where it does not make sense. Most web servers can vitualize host themselves, using better server memory, I/O and CPU. And without requiring several licenses when using Windows. The onnly advantages may be maintenance and somewhat security (but if you have a compromised server wihtinh you VMs it wouldn't be safe at all...). For fault tolerance and availability, a cluster is a better choice.

Anonymous said...

It MAY make sense. If your webserver is not a heavy load one, you're able to put some more vms on the same machine - running DIFFERENT operating systems (specialized) for different tasks.

Saa said...

this helpede me with a problem on my older machine thanks for the post.

Anonymous said...

Esteban, give me a call please.

Roger said...


Sorry for posting here - couldn't find your e-mail address.

I'm the leading editor of Software Developer's Journal which is a new e-magazine. I'm looking for developers who would like to share their knowledge with other developers. If you are interested in cooperation (articles writing, proofreading, ads) just please let me know -
I can send you a full offer.

Roger Zacharczyk
Leading editor of Software Developer's Journal
Phone: +48 781 854 535

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