EVC level.

[Akopylov]

Good day.

I got the HA cluster with EVC level "Nehalem". This level was configured cause there was need to move some vms from the host with Xeon E7530 (Beckton) to the host with E7-4850 (Westmere-EX). Now I want to vmotion some vms from the host with X5660 (Westmere-EP) to this cluster. Is this level OK for the live migration? I mean all mentioned processors belong to Nehalem generation (Westmere-EX and Westmere-EP are part of Nehalem too), however there is separate level called "Westmere" in the EVC configuration tab.

May I assume that host with X5660 had more CPU instructions than "Nehalem" EVC level hold and if this host will be included in the cluster with such EVC level, the vms will move correctly?

[rcporto · Accepted solution]

According with your processors models, you have the following:

Intel® Xeon® Processor E7530 - Nehalem - EVC L2 - http://ark.intel.com/pt-br/products/46491/Intel-Xeon-Processor-E7530-12M-Cache-1_86-GHz-5_86-GTs-Int...

Intel® Xeon® Processor E7-4850 - Westmere - EVC L3 - http://ark.intel.com/pt-br/products/53574/Intel-Xeon-Processor-E7-4850-24M-Cache-2_00-GHz-6_40-GTs-I...

Intel® Xeon® Processor X5660 - Westmere - EVC L3 - http://ark.intel.com/pt-br/products/47921/Intel-Xeon-Processor-X5660-12M-Cache-2_80-GHz-6_40-GTs-Int...

Like you already said, the X5660 have more instructions than the "Nehalem" level, so I think this will not possible, even with the destination cluster having the E7-4850 (Westmere) processor, but the EVC may will hide this instructions to keep the compatibility with the Nehalem.

But, you can always "simulate" a migration and the migration wizard will tell you if is possible or not.

[Akopylov]

But, you can always "simulate" a migration and the migration wizard will tell you if is possible or not.

I could not test a migration because this vmhost was in the separate building and in the different network at that time. Also it was necessary to upgrade it to 5.5 (or 5.1) to have the ability to change host and datastore simultaneously, so I just wanted to know if the current EVC level OK for my purposes before I made all the preparation.