resized volume size not detecting VMware existing datastore

 Issue:

resized backend volume size from storage array. but the VMware ESXi datastore size not getting increased after "refresh capacity" also. Tried storage iscsi adapter rescan/refresh as well,

Solution:

  Go to Existing datastore ->Configure find out the Lun ID of the existing datastore (can be found from Storage array where you provided LUN id)

 right click on the Datastore and choose "Increase capacity" option, in the next wind select the existing LUN ID and complete the steps.

Now you will see the new Datastore size.