VMware continues to release new technical papers about vSphere 4.1.
After Understanding Memory Resource Management in VMware ESX 4.1, Enhanced VMware ESX 4.1 CPU Scheduler and Host Profiles: Technical Overview, today virtualization.info recommends VMware vCenter Server 4.1 Performance and Best Practices.
The 46-pages document describes the performance improvements introduced with vSphere 4.1, provides capacity planning guidelines for vCenter Server and best practices for performance monitoring and tuning of advanced features like HA, FT and DRS.