VMware has released an updated guide to deploying Microsoft Clustering Services on vSphere (link below). The guide provides deployment options and procedures for building MSCS Clusters on vSphere 5. Along with these instructions you will find a checklist to verify that your setup meets the requirements as well as best practices for using vSphere HA and DRS.
In addition to this comprehensive guide for most MSCS scenarios we've also published a KB article which sheds a bit more light onto disk configurations and the differences between "shared disk" and "non-shared disk" configurations and support.
Guide: Setup for Failover Clustering and Microsoft Cluster Service
KB: Microsoft Clustering on VMware vSphere: Guidelines for Supported Configurations
-alex
Alex Fontana, Sr. Solutions Architect
