Hi,
I got the same issue before, But I did success remove it by checking all Virtual Machines.
Would you please check your virtual machine page, are there any VM left here?
If your LUN dead (on both cluster), then your VM is also dead.
So it should be remove.
Inventory > Datastore > Virtual Machine (Tab) >
And see if there are VM still here ?
Thanks!
Marchlam
(from Hong Kong )