Remove inactive datastores - vcenter appliance

[escapem2]

hi guys

I am using vcenter appliance 5.1 and I had to remove some datastores so I unmount them and delete them from my vCenter the thing is they still show up as Inactive under datastores

is there a way to remove them I searched in google but it was a procedure for vCenter and SQL but what about vCenter appliance and the embedded DB

thanks a lot

[escapem2]

don't worry guys One host that was in disconnected state I think it was let's say locking those inactive datastores so as soon as I removed the host all inactive datastores were gone