In a gist:
FLARE refers to Fibre Logic Array Runtime Environment an custom Windows Operating System which runs the EMC CLARiiON Storage System.
DART OS is a modified UNIX kernel with additional functionality added to operate as a file server.EMC Celerra runs on real-time operating system called as Data Access in Real Time (DART).
As I mentioned earlier FLARE Operating Environment is for EMC CLARiiON and DART is for EMC Celerra.
You can verify the same if you check the Storage System Properties for EMC CLARiiON in Navisphere or Unisphere Management software, you will find FLARE-OE Environment enabler enabled! For DART that makes it obvious which product it runs on now, right?
dynamox : You are up early, man!
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