To Find out how much storage space is left..
-Open Vsphere
-search for vm
-Click on the "Datastore" tab
-Used and free space is listed here.
To Increase storage space..
- launch vsphere
- locate server
- actions
- edit settings
- under hard disk, expand
- increase size
- ok
- wait for changes
- in server disk management
- extend volume
- click through to finish