1. One or more hardware memory media devices having computer-executable instructions embodied thereon that, when executed, perform a method for converting a hardware inventory into a fabric-computing cluster (FCC), the method comprising: establishing a communicative coupling between a user device and the hardware inventory, wherein the hardware inventory includes a plurality of computing units that are configured to provide additional compute or storage capacity to a data center, wherein the user device includes a data-center manager (DCM) engine that is provided access to a template file, wherein the template includes attributes of the hardware inventory that are recorded during discovery and validation of the plurality of computing units; provisioning the plurality of computing units with software that allows the hardware inventory to function as an FCC of the data center, wherein provisioning the plurality of computing units is based at least in part on the template file that includes a physical and logical topology of the hardware inventory, wherein provisioning comprises: (a) deploying a computing fabric to the plurality of computing units, wherein the computing fabric enables the plurality of computing units to interact as a unified logical system; and (b) deploying core infrastructure services to run on top of the computing fabric, wherein the core infrastructure services represent operating-system-level components that provide underlying support of applications running on the FCC; and configuring the hardware inventory to behave as the FCC of the data center, wherein configuring comprises applying a first set of configuration settings to the computing fabric.