What codec are you talking about? As I said before, .mov is only a container for a couple of codecs.
What do you mean by HDD manufacturer? HDD as in Hard Disk Drive? What does a HDD mass producer have to do with codecs?
Focus Enhancements sells DTEs for field productions, which seem to use a variety of codecs, which, depending on what kind of DTE you have, can be set in combination with the file suffix. .mxf is for Avid for example.
So what DTE do you use and what codec do the store video files use?