Opal, Opalite & Pyrite Self-Encrypting Drives (SED) Simplified

This year (2015) the Trusted Computing Group (TCG) Storage Work Group (SWG) published two new specifications derived from the Opal SED specification called Opalite and Pyrite. You may already be familiar with the benefits of using an Opal SED vs software encryption in your laptops and desktops, but are puzzled as to why there are 2 new standards. Perhaps you even wonder if they would be a better fit for your needs than Opal.