Only after I purchased the DNS-343 and had issues with formatting my 1.5tb HD's did I learn there are issues with using the 1.5's. Have you updated your firmware to the 1.02a in order to make the 1.5's work? Is so, any issues with the stability of 1.02a for you? I just want to make sure that is the path I want to follow prior to updating. Thanks for your thoughts.