Network Appliance Virtual Hosting Fun Stuff

[burnyd]

Firstly, Nutanix?
Secondly, how were they able to provision 8 cores when the hardware only has 6?

You can provision 32 cores if you would really like

But when things really start cooking like you are referring to cpu wise you will hit cpu ready situations and things start to break given the cpu latency with the way it works with virtualization and esxi scheduling.

[Dieselboy]

Yes I was expecting that, so I still don't know why anyone would even bother doing such a config even in a personal env. Not even for a lab, it's going to break or cause problems. So in production? Seems like crazy talk.

[deanwebb]

This is why you're a network guy and not a VM guy.

It works very well for servers, since many of them just run at 1-10% utilization of their resources all the time and really don't need more than one processor for what they're doing. The problems start when hardware is virtualized and the OS in the hardware expects to have all the resources, all the time, or it refuses to work.

[Dieselboy]

Thanks Dean,
Sorry to this thread for my repeated comments / questions but I still don't understand why anyone would even consider this.
To me, it's like yes you can physically fit 20" alloy rims on your hatchback; but it will drive like crap, look like crap, steer like crap and slow your 2.0 litre engine down.

What's the benefit of fooling the top level system? Is it a licensing thing? I did skim through the posts again to see if this was explained already. Apologies if so.

[deanwebb]

The analogy is more like how a bank with $1 billion in deposits can loan out $10 billion because the chance that its depositors will withdraw all of the $1 billion deposits is slim to none, most days. So, instead of just loaning out a billion, it loans out ten times that amount... because it can...

[Dieselboy]

But does it work with that analogy? My point is- what's the point of loaning out $10 billion, if it's just going to sit in peoples deep freezers? I don't see any advantage.

[deanwebb]

This is why you are also not a banker.

It's there just in case.

[Dieselboy]

Thanks Dean - guess I'll just file this one in my repositories under "Stuff I just don't understand".

Thanks all for the explainations above.