In reply to Delcina.

Hi Declina,
Apologies for the delay in responding to your query.
I agree, DCMDS would be kind of overlapping with DCUFI. But at the same time, let me mention that DCUFI is a certification course covering the Data Center technology where as DCMDS is a product specialist course, focused totally towards MDS product line. DCUFI also includes Nexus 7000 product line along with MDS.
In other words, depending on where the student wants to move forward, he/she will take other DCU** courses or select DCMDS for MDS focused training.
Hope this helps.
Regards.