Aus Einheitsfunktionsgruppen aufgebaute Dateienspeicherungszuordnungstabellen für Dateienspeichereinheiten grosser Kapazität
摘要
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.
申请公布号
DE3856090(T2)
申请公布日期
1998.06.25
申请号
DE19883856090T
申请日期
1988.03.23
申请人
INTERNATIONAL BUSINESS MACHINES CORP., ARMONK, N.Y., US
发明人
FLANNAGAN, WILLIAM JOSEPH, TUCSON, AZ 85715, US;KERN, RONALD MAYNARD, TUCSON, AZ 85748, US;KULAKOWSKI, JOHN EDWARD, TUCSON, AZ 85715, US;WAGNER, ROBERT E., TUCSON, AZ 85749, US