Additional Upgrade Resources
Cisco Collaboration Systems Solution Reference Network Designs (SRND) for at http://www.cisco.com/c/en/us/support/unified-communications/unified-communications-system/products-implementation-design-guides-list.html
Cisco Preferred Architecture guides and Cisco Validated Design guides at http://www.cisco.com/c/en/us/solutions/enterprise/design-zone-collaboration/index.html
Collaboration Virtual Machine Replacement Tool at http://ucs.cloudapps.cisco.com/
Cisco Collaboration Sizing Tool at http://tools.cisco.com/cucst