The VMworld Team posted a lot of new documents in the Ask the Expert Session community on VMworld.com.
Double-Take Replication in the VMware Environment
Virtualization Technologies and Their Impact on Disaster Recovery Planning
Migrating to Virtual Machines with the Double-Take Virtual Recovery Assistant
Forrester Consulting study on going to disk based data protection
NetApp and VMware Storage Best Practices document
White Paper: Data Deduplication Solutions