Written by Sam McGeown on 28/10/2012
Published under VMware and vSphere
VMware vSphere Single Sign On (SSO) can be installed in Multi-site mode to support local sign-on to vCenters that you want to be part of the same single sign on domain - for example, if you want to install Linked-Mode and have the advantage of a single pane of glass view, but can’t risk using a single SSO instance across the WAN. In other words, from VMware’s blog post: Multisite deployments are¬†where a local replica is maintained at remote sites of the primary vCenter Single Sign-On instance.