Hi,  These are names Cisco assigns to Hardware ASICs (Application Specific Integrated Circuits) . These ASIC's reside on LineCards and Supervisor modules, the names vary in accordance with hardware revisions and application. I hope this answers your query.  Thanks and rgds,  Jim.
under the MDS directors I can see several names like information for device ID xyz "Tuscany-fw" or Aakash or Tuscany-que what are the names stands for the models are MDS 9509 and 9506
MDS device names