Filesystems are the worst! Try telling a customer to tar up a directory and send it to you -- things get lost so easily!  Most of our customers dont even know what &quot;tar&quot; means.  I think you are asking for trouble going with a filesystem as a storage mechanism.<p>HDFfView is not the only viewer in town.  There are several viewers.<p>I&#x27;ve used HDF5 weekly for the last 5 years and so have my associates and its been wonderful. MATLAB even uses it to store its .mat files these days.<p>I think you are misinformed and Im sticking to my story !