I have numerous Virtual Servers running Windows 20012 Standard within my vSphere environment. I have recently converted all my storage to a new SAN that I have created and presented NFS shares and mounted on vCenter esxi hosts. I have carved out multiple thin provisioned volumes for each of these server. I have one of these servers that has 4 VMDK Disks with a total of 5 partitions. The VMDK Disk show the correct size in, but two of the volumes show up as 500MB partitions, but they should be 300GB and 310GB in size given the the partition on these two disks occupies the full size.
I have attached a screen shot of Disk Management with the Disks at top, and the volumes at the bottom.