Increased size didn't get updated in vCenter

[netappmagic]

After we added more than 1 TB to a volume, then in vCenter, the size of the datastore didn't get updated. 

Any reason why or action we should perform?

I thought all we need to do just to "refresh". 

[SpindleNinja]

VMFS or NFS? 

[netappmagic]

NFS.

[SpindleNinja]

It's typically that simple.  

What other troubleshooting have you done? 

[netappmagic]

I did typo. It should be VMFS, not NFS

The LUN size on NetApp filer is 1.4TB, however, the datastore in vCenter corresponding to the lun shows 1.9TB.

Why? any thing can I do?

[SpindleNinja]

I would think it would be the other way around?    But for VMFS, you have to add the space to the vmfs datastore.  

This can walk you through it if you haven't done this already.  https://kb.vmware.com/s/article/1017662