is a mix of cpu versions an heterogeneous pool?
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I think no, but I'm wondering your opinions.
In my pool I have 5 server with double intel 5217 (8C 3GHz) processors, I'detected that CPU start to be very higth , so thinking in more powefull CPU. Model 5220S is 18C cores at a similar speed. Both, 5220S and 5217 are gold series of "cascade lake" architecture. So, features must be the same, only cores and speed differ. Intel 6226R is another interesting option, quite similar speed and doubles chip cores.
According to citrix, "Combining different CPU models that have identical features" is the 4th type of heterogeneous pool, and "Type 4 represents CPUs with different marketing model names but identical model number, family, and feature flag attributes. Because they have identical attributes, these combinations have always been supported and do not require a mask, but their compatibility has not been obvious when comparing the marketing model names."
Do you think these chips (5220s and 6226R) would mean an heterogeneous pool or not?
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Are you asking because you didn't but them yet? Or what's the point of your question.
If the models are similar, there shouldn't be much of an issue. Back in the day you needed to manually mask this, latest version do this all automagically.
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I'm asking because I need to increase my pool's CPU resources, the easy way is buy the same processor, but thinking in a more powerful option, RAM and networking features are ok, but compute performance is being starvest by some VM.
I have an old pool, which I had to upgrade some years ago, but no more original model components were available, so I had to buy a new model, new cpu generation, so it became an heterogenous pool. The problem was not the lost of new cpu features, the problem is that time to time, when I performe a live migration VM, it hangs and I must reboot the VM.
Keeping in mind to avoid and heterogeneus pool, I think the safest option is 5220S, because 6226R implies more changes which I unknow in the architecture, maybe new features, that's what I unknow.
Any piece of advice?
