Increasing Datastorage

Hi,

We just added new drives to our RAID 5 virtual server I am unable to increase the size of the datastore in ESXi 5.0.  When I click on the Increase button, no extra devices are shown See the picture attached.

Logical Dell Disk Radi 5 = 2.18TB but my VMFS is only 1.09TB which was the original size.

File System: 5.54
ESXi : 5.0.0 Build 1117897

Please help....

Let me know if you need more information in order to troubleshot
this issue.

Thanks!