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We have over 700+ Hosts and in multiple datacenters and run our mgmt in a separate Cluster but not separate vCenters. We have over 10 vCenters already so we were trying to keep that number down.
OK interesting thanks. Are you leveraging auto deploy at all?
We don't use auto-deploy because we don't want DHCP in our datacenters. I wrote build scripts that does everything for us.
I came across your thread while searching for the same answer myself.
I have worked in various environments and generally additional vCenters have only been created when there is a specific need E.G. different site or different environment (secure environment separation etc).
Having also worked in some large enterprise / managed service provider environments I have noticed quite a lot have separated out their management and compute utilising separate vCenters, however I am yet to understand why / what is the benefit. Even with NSX and other product integrations as long as the clusters are separate (which I completely understand and agree with) I fail to understand or agree on why vCenter separation is required.
Now saying that, if you are not running VCSA 6.5+ and taking advantage of vCenter HA I can appreciate that having them separate gives you a bit of a safety net but really nowadays is it necessary to have them separate?
I have yet to come across or think of a solution that would specifically require this separation, has anyone else? Responses from Architects and VMware would go down a treat