This matrix highlights the differing Editions and Pricing and prices of
Vmware vSphere 4:
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiWTj95X44xQHsURnV_-7yEoiExOF5fXfqPTYHvSW2ObpkdOs41czOMM6mUmDRi7UQ2a1Hg2kXS-hNb5tBr3SdfL21Rgt-BJAU-NEkE1Rz_P-JhJAhboue27nEhGMkdL1hVC9lRo4NUmdc/s400/vsphere4editions.jpg)
- Thin Provisioning is native to vSphere vCenter, not ESX. ESX/ESXi 3.5 can run witth Thin Provisioned virtual disks (VMDK).
- Storage vMotion is now NATIVE to the client interface (no more 3rd party plugin). Right-click, migrate, wizard walk, and your done.
- Very Important! FaultTolerence - Vmware says, "VMware Fault Tolerance is supported with virtual machines with only a single virtual processor. VMware Fault Tolerance ... requires at a minimum the Intel 31xx, 33xx, 52xx, 54xx, 74xx or AMD 13xx, 23xx, 83xx series of processors; and works with any future generation of these processors."
Before you expand your virtual infrastructure with new servers, make sure you're buying the correct supported processors Fault Tolerence is desired.