2 ESX 3.5 with 64bits and 1 ESX 3.5 with 32bits

[Elena_V]

Hello,

I have a problem about the CPU of my ESX. I have 1 Virtual Client and three ESX. All ESX have the same model of CPU, but two of these are configurated with 64bits because I ask for it.

Now, I want to configurate the last ESX, but I don't remember to do it. I know that I need to modificate something in the BIOS of my ESX to run Operative System of 64bits.

The main problem is that I only can do the Vmotion with two of my ESX and I want do it with all.

Somebody can help me, please.

Thanks and regards,

Elena.

[kooltechies]

Hi,

If the CPU is Intel then you need to enable VT ( Virtualization Technology) in the BIOS this will enable 64 bit support.

Thanks,

Samir

P.S : If you think that the answer is helpful please consider rewarding points.

[oreeh · Accepted solution]

You need to enable the virtualization extensions (usually named VT or virtualization support).

Make sure to power off the system afterwards.

[Troy_Clavell]

This KB may be helpful

http://kb.vmware.com/kb/1901

Both options are enabled in the BIOS and system must be shutdown after. For Intel, it's under processor options--Virtual Technology. I'm not 100% on where for AMD

[Elena_V]

Thanks for those useful answers!