6.0.3

Table Of Contents
Starting with vSphere 6.0, vCenter Single Sign-On is either included in an embedded deployment, or part of
the Platform Services Controller. The Platform Services Controller contains all of the services that are
necessary for the communication between vSphere components including vCenter Single Sign-On, VMware
Certicate Authority, VMware Lookup Service, and the licensing service.
The order of installation is important.
First installation
If your installation is distributed, you must install the
Platform Services Controller before you install vCenter Server or deploy the
vCenter Server Appliance. For an embedded deployment the correct
installation order happens automatically.
Subsequent
installations
For approximately up to four vCenter Server instances, one
Platform Services Controller can serve your entire vSphere environment. You
can connect the new vCenter Server instances to the same
Platform Services Controller. For more than approximately four
vCenter Server instances, you can install an additional
Platform Services Controller for beer performance. The vCenter Single Sign-
On service on each Platform Services Controller synchronizes authentication
data with all other instances. The precise number depends on how heavily
the vCenter Server instances are being used and on other factors.
How vCenter Single Sign-On Affects Upgrades
If you upgrade a Simple Install environment to a vCenter Server 6 embedded deployment, upgrade is
seamless. If you upgrade a custom installation, the vCenter Single Sign-On service is part of the
Platform Services Controller after the upgrade. Which users can log in to vCenter Server after an upgrade
depends on the version that you are upgrading from and the deployment conguration.
As part of the upgrade, you can dene a dierent vCenter Single Sign-On domain name to be used instead
of vsphere.local.
Upgrade Paths
The result of the upgrade depends on what installation options you had selected, and what deployment
model you are upgrading to.
Table 21. Upgrade Paths
Source Result
vSphere 5.5 and earlier Simple Install vCenter Server with embedded
Platform Services Controller.
vSphere 5.5 and earlier Custom Install If vCenter Single Sign-On was on a dierent node than
vCenter Server, an environment with an external
Platform Services Controller results.
If vCenter Single Sign-On was on the same node as
vCenter Server, but other services are on dierent nodes,
an environment with an embedded
Platform Services Controller results.
If the custom installation included multiple replicating
vCenter Single Sign-On servers, an environment with
multiple replicating Platform Services Controller instances
results.
Chapter 2 vSphere Authentication with vCenter Single Sign-On
VMware, Inc. 23