How long will write-once-read-many (WORM) technology last? Up to now, this technology simply hasn't been around long enough to even take a stab at answering this question based on realtime testing. However, recently the maturity of optical WORM technology reached the point where it has finally become possible to test media that was written a considerable period of time in the past. The results indicate that TrueWORM media should have no difficulty lasting the 100 years or so that has been projected in the accelerated aging tests.