Hello, I am making a career transition in to storage.  I am writing my ISM exam in Febuary.  The dilemma is my CCNA exam expires in July, and I need to take another exam to keep it active.  For the EMC professionals out there, which Professional level Cisco certification would be most valuable in the EMC world?  I've read somewhere that CCDP goes well with the storage architect career path, but from searching the current available jobs out there, some companies are looking for storage professionals with a CCNP.  What is the concensus here?  Thank you in advance!