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Installing a new processor on an ESXI machine

Posted on 2011-10-26
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Last Modified: 2012-08-13
Hi,
We have two esxi 4.1 machines that we're trying to get the same hardware on so we can eventually run vmotion.

To do this, the one host needs to have a second processor installed (and the first processor swapped out)... so going from one processor X5560 to two Xeon X5660 processors.

It's a Dell R710.

Just wondering if there's anything special I need to do?  Would it be as easy as powering down ESXi, swapping the processors, and powering it back up again?

What issues would I run into, if any?

At the same time I would also be installing more memory - the same # and type of modules of memory that are running in the first ESXi host.
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Question by:Mystical_Ice
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LVL 124
ID: 37035060
There's not really any need to get the same processors, VMware vSphere have a function called EVC

Enhanced VMotion Compatibility (EVC) processor support
http://kb.vmware.com/kb/1003212 

But as for your question, there is nothong for you to do on the ESXi host, it will auto-configure.
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LVL 124
ID: 37035071
VMware KB: EVC and CPU Compatibility FAQ
http://kb.vmware.com/kb/1005764

VMware VMotion and CPU Compatibility
http://www.vmware.com/files/pdf/vmotion_info_guide.pdf

It was designed, so you could mix and match old and new servers, with new processors in a Cluster for vMotion and DRS.
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Author Comment

by:Mystical_Ice
ID: 37035403
OK i should never have mentioned vmotion... i need to get the same specs on both machines though, just because one is drastically underpowered (1 processor 4 cores, 12GB ram, vs 2 processor 12 cores and 96GB ram)

So I just pop the new processors in, and bump the RAM, and everything is gravy?
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LVL 124
ID: 37035405
Ensure the memory is balanced between processors as per Dell documents.
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LVL 124

Accepted Solution

by:
Andrew Hancock (VMware vExpert / EE MVE^2) earned 2000 total points
ID: 37035409
Okay, just drop in the processors, usual anti static precautions.

nothing todo with ESXi configuration, it will self configure.
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Author Comment

by:Mystical_Ice
ID: 37037610
That is excellent to know; thanks very much.
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Author Closing Comment

by:Mystical_Ice
ID: 37241747
This did it.  ESXi automatically reconfigured, detected the processor, and all was gravy
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