This guide provides best practice guidelines for deploying Exchange Server 2010 on vSphere. The recommendations in this guide are not specific to any particular set of hardware or to the size and scope of any particular Exchange implementation. The examples and considerations in this document provide guidance only and do not represent strict design requirements, as the flexibility of Exchange Server 2010 on vSphere allows for a wide variety of valid configurations. The ideal platform for Exchange would adapt easily to changing workloads, provide flexibility to accommodate changing demands on an organization's IT infrastructure, remain reliable and resilient despite system outages, and improve both staff and infrastructure hardware effectiveness. A new operational platform based on VMware vSphere™ can accomplish these goals."