FACOM 6443 magneto-optic disk sub-system

Abstract

There has always been a strong market requirement for rewritable optical disk drive as a follow-on product to read-only and write-once type optical disks. Fujitsu h a s been researching magneto-optic recording technologies for rewritabe optical disk , and h a s developed a disk sub-system with initiative of the National Aerospace Laboratory (NAL) in Tokyo. The drive h a s a large storage capacity of 8.9 GB/spindle with a few seconds of access time. It can store data economically in a small floor space, and it can be used as a supplement or partial alternative to magnetic disk drives or tape library units. The subsystem will be used from the beginning of 1989. This paper explaines the drive technologies, support software as well as the application of this new subsystem at NAL.3. I n t e r l i n k e d S e r v o T r a c k i n g T e c h n o l o g y , Processings SPIE S . Arai, et. al.