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HDP on VMs, spread or same metal?

Contributor

When installing HDP on VMWare or other virtual environment, how important is it, or is it at all, to spread the nodes across multiple hosts? I know from a reliability and HA perspective, it would be very important but what about performance? Let's say I have twenty nodes across four VMWare hosts and need to install a few more nodes for some peak in data handling. Since I already have multiple hosts handling my nodes, what's the performance difference in adding new nodes to the existing hosts?

My thought is that I can't control what the virtualization team might put on those hosts if I don't max them out so I don't gain any performance reliability by adding more to the same hosts or spreading them out. Does it matter, performance wise?

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