Aus Einheitsfunktionsgruppen aufgebaute Dateienspeicherungszuordnungstabellen für Dateienspeichereinheiten grosser Kapazität

An updatable and expandable directory structure and resultant access procedures emulating a write-once or indelible record medium (20) to a rewriteable record medium as to accessing characteristics. The directory is indexed; one directory header for a first set of files indexes another set of files....

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Bibliographic Details
Main Authors FLANNAGAN, WILLIAM JOSEPH, TUCSON, AZ 85715, US, KULAKOWSKI, JOHN EDWARD, TUCSON, AZ 85715, US, WAGNER, ROBERT E., TUCSON, AZ 85749, US, KERN, RONALD MAYNARD, TUCSON, AZ 85748, US
Format Patent
LanguageGerman
Published 25.06.1998
Edition6
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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Summary:An updatable and expandable directory structure and resultant access procedures emulating a write-once or indelible record medium (20) to a rewriteable record medium as to accessing characteristics. The directory is indexed; one directory header for a first set of files indexes another set of files. Sector clusters or data extents are managed such that random recording from any file proceeds independently of write-once characteristics. The directory is stored on the medium as data is recorde. Each directory entry contains an archival history of recording of a related data file in the medium. Both logical and physical addressing is employable.
Bibliography:Application Number: DE19883856090T