Simultaneous Write And Read Operations On An Optical Disk Drive At Rates Up To 3 Mbytes/Sec

J. H. Hoover

doi:10.1117/12.936855

14 January 1987 Simultaneous Write And Read Operations On An Optical Disk Drive At Rates Up To 3 Mbytes/Sec

J. H. Hoover

Proceedings Volume 0695, Optical Mass Data Storage II; (1987) https://doi.org/10.1117/12.936855
Event: 30th Annual Technical Symposium, 1986, San Diego, United States

Abstract

System application and integration issues drive the operational requirements of an optical disk memory. This paper describes a typical system integration problem and four possible solutions. The operational requirement is to WRITE a continuous input data stream into the optical disk memory for several days, and READ random files from the memory at the same time. This can be done at continuous WRITE rates of 24 Mbps (3 MBytes/sec). The four solutions involve different ways to use the RCA Optical Disk Jukebox (ODJ) and different configuration options that may be specified when ordering the ODJ. These options include multiple heads per turntable, multiple turntables per ODJ and I/O staging buffers. Data is given on the number of file READ accesses per minute vs. simultaneous WRITE rate. Diagrams of the ODJ configuration options are included.

Citation Download Citation

J. H. Hoover "Simultaneous Write And Read Operations On An Optical Disk Drive At Rates Up To 3 Mbytes/Sec", Proc. SPIE 0695, Optical Mass Data Storage II, (14 January 1987); https://doi.org/10.1117/12.936855

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