Hello and welcome to the communities.
Do you mean the actual services available (SSH, NTP, etc) or the product features (vMotion, FT, etc) on the ESXi hosts or in vCenter Server? What are you ultimately trying to accomplish?
Brian Atkinson | vExpert | VMTN Moderator | Author of "VCP5-DCV VMware Certified Professional-Data Center Virtualization on vSphere 5.5 Study Guide: VCP-550" | @vmroyale | http://vmroyale.com
