David Varnum is Network and Data Center engineer, architect, consultant and blogger. CCIE DC #45880. His focus is adapting business strategies with emerging enterprise developments in data center, security and virtualization realms. Prior to his current role, he served as lead engineer and consultant in both private and public sectors. David holds his CCIE in Data Center and is an MCSE+ and VMware Certified Professional. A Cisco Champion, he also blogs at overlaid.net and blogs.cisco.com