Dell PowerEdge R320 - No Hardware Diagnostic Utility found

Hello,

i'm reaching out for help as i'm at a bit of a loss here. 
We've recently bought a total of 6 Dell PowerEdge R320 servers for a small service cluster. 
As per our internal policy we must perform a full hardware diagnostic run before even starting to do tests in the server room.

The issue i'm facing right now is that none of the servers seem to have the Hardware Diagnostic utility installed, as when i try to run it through the Lifecycle Controller interface i get the error: "no hardware diagnostic utility found".

I've tried searching some documentations on the web about this issue but nothing seems to be pointing in the right direction. 

Any help would be much appreciated.