commguy101
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Contributor

vSphere 6.5 Enhanced Linked Mode Configuration

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A simple question around vSphere Enhanced Linked Mode configurations.

The supported topologies are here: VMware Knowledge Base https://kb.vmware.com/s/article/2147672

What I am trying to do is end up with 3 different sites; Site1, Site2, Site3. Each site is in a separate area of the country, so I have concerns about having only 1 PSC at 1 location and pointing all other VCSA's to it.

What I would like to do is have 1 VPSC and 1 VCSA at each site, all joined to the same SSO domain in enhanced linked mode. From the topology KB linked above, it looks like the only way I can have more than 1 site each with their own VPSC is to use a third party load balancer, however I do not believe this is accurate.

At a previous company I had 4 sites, each with their own VPSC and VCSA but all in one SSO domain in enhanced linked mode with no issues. Am I reading the supported topologies wrong?

The 4th option down form the top states:

  • 1 Single Sign-On domain
  • 1 Single Sign-On site
  • 2 or more external Platform Services Controllers

It does show multiple VPSCs without a load balancer but only allows 1 site, so I am confused. Each office would be it's own 'site' but I would not be using a third party load balancer.

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MBreidenbach0
Hot Shot
Hot Shot

You can have three sites with one PSC and vCenter in each site and no load balancer. The PSCs should replicate PSC1 <-> PSC2 <-> PSC3 <-> PSC1 so if one PSC fails then the otherns are still able to replicate.

If you need a PSC HA configuration where one PSC can fail then you need two PSCs and load balancer in each site which has that availability requirement.

You can have two PSCs in a site whithout a load balancer but a vCenter server can 'point' to one PSC only so it that PSC fails it can be repointed to a PSC in the same site (not in a different site).

Repoint vCenter to PSC in same site VMware Knowledge Base

Repointing vCenter to a PSC in a different site is not supported with 6.5 VMware Knowledge Base

So if a PSC fails you can't repoint vCenter 6.5 to a PSC in a different site.

View solution in original post

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MBreidenbach0
Hot Shot
Hot Shot

You can have three sites with one PSC and vCenter in each site and no load balancer. The PSCs should replicate PSC1 <-> PSC2 <-> PSC3 <-> PSC1 so if one PSC fails then the otherns are still able to replicate.

If you need a PSC HA configuration where one PSC can fail then you need two PSCs and load balancer in each site which has that availability requirement.

You can have two PSCs in a site whithout a load balancer but a vCenter server can 'point' to one PSC only so it that PSC fails it can be repointed to a PSC in the same site (not in a different site).

Repoint vCenter to PSC in same site VMware Knowledge Base

Repointing vCenter to a PSC in a different site is not supported with 6.5 VMware Knowledge Base

So if a PSC fails you can't repoint vCenter 6.5 to a PSC in a different site.

View solution in original post

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commguy101
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Contributor

Perfect. Thanks for the response.

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