Friday, April 24, 2015

vCenter Architectural Change vSphere 6.0 (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.
The Platform Services Controller (PSC) provides a set of common infrastructure services encompassing
  • Single Sign-On (SSO)
  • Licensing
  • Certificate Authority
The vCenter Management Server consolidates all the other components such as Inventory Service & Web Client services along with its traditional management components. The vCenter Server components can be typically deployed in with either embedded or external PSC. Care should be taken to understand the critical differences between the two deployment models. Once deployed one cannot move from one mode to another in this version.
More details:-   http://www.vmware.com/files/pdf/techpaper/vmware-vcenter-server6-deployment-guide.pdf

Sunday, April 19, 2015

vSphere 6: Scalability Improvements

vSphere 6 has greater capacity than vSphere 5.5.

vCenter Server has the following configuration maximums:

Embedded database:
vCenter Server on Windows: 20 hosts or 200 virtual machines
vCenter Server Appliance: 1,000 hosts or 10,000 virtual machines

A cluster has the following configuration maximums:
64 hosts in a cluster
8,000 virtual machines per cluster

A host has the following configuration maximums:
480 physical CPUs per ESXi host
6 TB of RAM per ESXi host (12 TB of RAM on specific OEM platforms)
1,024 virtual machines per ESXi host