Title :
A spacecraft mass storage optical disk system
Author :
Hines, Glenn D. ; Jurczyk, Stephen G. ; Hodson, Robert F.
Author_Institution :
NASA Langley Res. Center, Hampton, VA, USA
Abstract :
NASA (the US National Aeronautics and Space Administration) has established a program to develop a high-performance (high-rate, large-capacity) optical disk recorder. An expandable, adaptable system concept is proposed based on disk drive modules and a modular controller. Drive performance goals are ten gigabyte capacity, 300 megabit per second transfer rate, 10-12 corrected bit error rate, and 150 millisecond access time. This performance is achieved by writing eight data tracks in parallel on both sides of a 14-inch optical disk using two independent heads. System goals are 160 gigabyte capacity, 1.2 gigabit per second data rate with concurrent input/output (I/O), 250 millisecond access time, and two- to five-year operating life on orbit. The system can be configured to meet various applications. This versatility is provided by the controller, which provides command processing, multiple drive synchronization, data buffering, basic file management, error processing, and status reporting
Keywords :
aerospace computing; optical disc storage; space vehicles; basic file management; command processing; data buffering; disk drive modules; error processing; high-performance; mass storage; modular controller; multiple drive synchronization; optical disk recorder; optical disk system; spacecraft; status reporting; Bit error rate; Computer buffers; Control systems; Disk drives; Error correction; NASA; Optical buffering; Optical recording; Space vehicles; Writing;
Conference_Titel :
Mass Storage Systems, 1993. Putting all that Data to Work. Proceedings., Twelfth IEEE Symposium on
Conference_Location :
Monterey, CA
Print_ISBN :
0-8186-3460-X
DOI :
10.1109/MASS.1993.289748