vSphere 6.0 – Embedded PSC vs External PSC

vCenter Server 6 has some fundamental architectural changes compared to vCenter Server Server 5.5. The multitude of components that existed in vCenter Server 5.x has been consolidated in vCenter Server 6 to have only two components vCenter Management Server and Platform Services Controller, formerly vCenter Server Single Sign-On.

  • Platform Services Controller is either Embedded or External to vCenter Server
  • Choosing a mode depends on the size and feature requirements for the environment

Platform Services Controller

vCenter Server Services

·         VMware vCenter Single Sign-On

·         License service

·         Lookup service

·         VMware Directory Services

·         VMware Certificate Authority

 

·         vCenter Server

·         VMware vSphere Web Client

·         Inventory Service

·         VMware vSphere Auto Deploy

·         VMware vSphere ESXi Dump Collector

·         vSphere Syslog Collector on Windows and vSphere                   Syslog Service for VMware vCenter Server Appliance

 

Configuration Maximums:

Below is the configuration Maximums of PSC.

Items Maximum
Domain/Replication
Maximum PSCs per vSphere Domain 8
Maximum PSCs per site, behind a load balancer 4
Maximum objects within a vSphere Domain (Users and Groups) 1,000,000
Maximum tolerance for time skew between PSC nodes 5 minutes
Identity Source
Maximum Active Directory or OpenLDAP Groups per User for best performance 1015
Enhanced Linked Mode/Lookup Service
Maximum number of VMware Solutions connected to a single PSC 4 This limit is based on the test performed using only vCenter
Server.
Maximum number of VMware Solutions in a vSphere Domain 10
VMCA/Certificate Server
Maximum number of subordinate Certificate Authority servers in the chain within VMware Certificate Authority 6
Maximum cryptographic hash used for PSC Node certificate 1
Maximum RSA Public Key length used for PSC Node certificate 16,384

vCenter Server with Embedded PSC :

The embedded PSC is meant for standalone sites where vCenter Server will be the only SSO integrated solution. In this case a replication to another PSC is not necessary.

Embedded PSC

vCenter Server with External PSC :

External Platform Services Controller, vCenter Server and the vCenter Server components are deployed on one system, and the services included in the Platform Services Controller are deployed on another system.

EPSC

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