Integration Options For The OSI LD1200

Louis G. Edwards

doi:10.1117/12.936856

Abstract

Optical drives have unique characteristics that lend themselves to applications that previously were difficult or impossible to satisfy. Obvious examples are: a. Removable storage of huge volumes of data - Transportability - Jukebox use - Security b. Write once - Audit trails that cannot be erased c. Long lasting archives - Do not need to be rewritten every few years - Not vulnerable to magnetic fields - Randomly accessible This paper identifies some features and algorithms that provide high efficiency in achieving the benefits listed above. These features are used in some of the subsystems in which the OSI LD1200 is integrated. Gaining the benefits of optical disks by integrating them into an existing computer system was hampered because existing software drivers were designed for magnetic disk drives. Existing drivers assume the ability to update a file--including the directory--by rewriting in the same sector. The requirement for new and/or modified host adapters and software drivers has provided opportunities for existing adapter houses as well as for new entrepreneurs. This has led to subsystems in which different characteristics of optical drives are emphasized and has resulted in a wide variety of capabilities available for use in applications.

Citation Download Citation

Louis G. Edwards, "Integration Options For The OSI LD1200", Proc. SPIE 0695, Optical Mass Data Storage II, (14 January 1987); doi: 10.1117/12.936856; https://doi.org/10.1117/12.936856

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