VMware DRS/EVC tip: Never forget to enable VT in the BIOS

I’ve said it before and I’ll say it again: I’m not perfect. I even make mistakes every so often! Today, I made a relatively simple one, but one that’s easy to overlook. We recently added a new Dell M610 server to our VMware environment. This system has dual 6 core Intel Xeon X5650 processors. Upon attempting to add the system to our existing DRS (Distributed Resource Scheduler)-enabled cluster, I received notice that the system had processors that were not compatible with the existing EVC (Enhanced vMotion Compatibility) mode for the cluster. At first, I panicked a bit thinking that the newer processors were somehow different enough than the other processors in the cluster (Xeon 5400 series and Xeon 55 series) that I’d have a problem.

And then, I had my “Duh” moment.

I rebooted the new server, checked the BIOS and, lo and behold, I’d failed to enable VT in the BIOS. Upon correcting that error, our new server hums along as a friendly part of our cluster and we have a bunch more processing and memory resources to use for our environment.

Don’t berate me too much in the comment section! J I share to help others save a bit of time and avoid even silly mistakes.

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