You must verify that vMotion is licensed on all the hosts whose resources you want to be available for dynamic reallocation.

1

Log in to the vSphere Client and select the host from the inventory panel.

2

Click the Configuration tab.

3

Click Licensed Features under Software.

4

In the Product Features list, verify that vMotion is listed.

5

Repeat steps 1 through 4 until you have verified all applicable hosts.