In this tutorial I will demonstrate how you can move your virtual machine from one datastore on another using VMWare ESX 5 using the Vsphere client. Before you start make sure that the virtual machine that you want to move has been powered off.
In my example I have two datastores, one of 300 GB and the other one is 600 GB. I want to move a VM from the 600 GB drive to the 300 GB drive.
Click on your ESXi host and select Configuration > Datastore where your VM is located and click on Browse Datastore.