To: Mark Oliver who wrote (3754 ) 7/23/1998 7:03:00 PM From: Stitch Respond to of 5058
Mark,<<As an insider, are you also hearing that GMR heads are having huge losses due to ESD (Electro Static Discharge)? >> And it will only get worse in the future. At an IDEMA technical presentation yesterday in Penang, Malaysia, Dr. Roger Wood of IBMs Storage Division gave the industry a glimpse of their thinking on the future. He showed theoretical attributes of a one terabit/sq. in. disk drive as well as a picture of a mock disk drive, less then the size of a floppy diskette, that would hold a terabyte of data. The grain structure of the media is so minute that each grain would measure approximately 10 atoms in width. The "flying height" of the read/write head in such a drive would be less then 1/10 of a micro inch. That, he said, is virtual contact as there would be "no room for air". (I love it when technologist talk like this.)In this product the coercion and subsequent remanence of a magnetic domain would have a substantially diminished shelf life, and would "lose" its magnetic properties over the course of five years or so. In order to handle that, storage strategist would develop heirarchial storage management substantially more sophisticated then what we have today. Think tape drives are dead? Think again. They have magnificant advantages in such a heirarchy. It is quite possible that the magnetic films on tape will be sputtered someday, to finishes that surpass today's most complex thin-film HDD media. By the way. Insofar as manufacturing is concerned all the problems that exist today (microcontamination, electro-static discharge) will be even more critical. The head in this model will be substantially more susceptible to ESD damage (called thermal asperities in industry parlance). Interesting. best, Stitch