Appendix G: Upgrade Checklists : Phase 4
Phase 4
Additional Upgrades
Upgrade all hosts that are connected to datastores and vSphere distributed switches.
Upgrade VMFS datastores to VMFS-5.
Upgrade vSphere distributed switches.
Modify provider virtual datacenters to support virtual hardware version 8, if desired.
Modify organization virtual datacenters to enable fast provisioning, if desired.