This display string gives a text description of the hardware location of the controller, applicable specifically on complex multi-SBB (storage building block) hardware, returned as a NULL string if the location cannot be determined or does not apply. An admin uses this on larger, multi-enclosure systems to know precisely where within the complex hardware assembly a given controller physically sits. For example, a populated hardware location string on a multi-SBB system tells a technician which specific building block houses the controller needing service.