A couple of things here. First it looks like your MetaLUN is still set to use the current capacity of the base LUN that was expanded, not the maximum capacity of the MetaLUN. Set the capacity of the MetaLUN to its maximum capcity.  Once that is done you can increase the size of the VMFS partition non-distuptively using the vSphere Client. Go to the properties of the VMFS volume and you will see an Increase button. Go through the wizard that starts when selecting that button and it will increase the size of the VMFS paritition to the size avaiable of the MetaLUN.
I am kinda new at the VM Ware thing and am looking for some help... We are running ESXi 4.0 on a Dell Blade. Originally, there was a 250 GB LUN created to house the VM's on our SAN. Recently, we added additional storage to the SAN and want to add some VM's to the blade. I have expanded the LUN by 200 GB making it 450 GB, but ESXi doesnt see the new space. I think it is because I didn't expand the file system out to the full size, but left it as it was since I didn't want to risk loosing data. If I expand the capacity to the full 450 GB, will ESXi be able to adjust on the fly with out loosing any data? We have several Virtual Servers running and a small file store that we cant loose.[IMAGE]
ESXi Expansion