However, after increasing the space in the LUN, the datastore still reflects the same amount of space! I went to view the properties of the datastore and saw this. On the device, it correctly reflects the increased capacity of 110GB while the primary partition still shows 100GB.
Perhaps I need to re-format the entire partition in VMFS to increase the partition? I clicked on the "increase" button and found nothing.
Did some serious googling and found some articles referencing this VMWare KB
http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1017662
Saw this in step 3 "Open another vSphere client that connects directly to the ESX host.". This must be the reason! I opened another vSphere session that connects directly to the ESXi host instead of managing it from vCenter. Did the same steps to increase the datastore and this time, I can see some LUNs available for selection. Select the LUN with "Yes" in the "Expandable" column.
After clicking next and applying, the datastore's capacity increased to 110GB.
