Data access system for a file access processor

Details Data access system for a file access processor Data access system for a file access processor

1990-09-21

1991-12-31

Fleming, Michael R.

Boots, shoes, and leggings

36422281, 3642281, 3642813, 3642816, 6DIG1, G06F 1540

Patent

active

050776584

ABSTRACT:
A Data Access System for a File Access Processor for servicing requests from a set of Application Support Processors, which can exist in a global network, with each Application Support Processor sharing access to data in files stored by the File Access Processor. The File Access Processor manages access to a set of data files and information about files held in file directories, which allow for managing file collections, can relate to each other hierarchically, and may be shared. Each Application Support Processor also maintains therein an internal cache of file information to improve performance by reducing communications required with the File Access Processor for information about files. The File Access Processor provides the Application Support Processors with information for updating and maintenance of local caches of directory and file description information through a centralized accumulation and distribution of cache change notifications. The Data Access System also provides for permanent storage in the form of catalogs for retaining shared information about files, directories, and control information. A separate access method and storage facility is utilized for these catalogs from that utilized for file data, permitting flexibility in access to catalog information which require access only occasionally, while retaining high performance in the access to file data.

REFERENCES:
patent: 4167782 (1979-09-01), Joyce et al.
patent: 4399504 (1983-08-01), Obermarck et al.
patent: 4408273 (1983-10-01), Plow
patent: 4432057 (1984-02-01), Daniell et al.
patent: 4463424 (1984-07-01), Mattson et al.
patent: 4480304 (1984-10-01), Carr et al.
patent: 4498145 (1985-02-01), Baker et al.
patent: 4506326 (1985-03-01), Shaw et al.
patent: 4507751 (1985-03-01), Gawlich et al.
patent: 4633430 (1986-12-01), Cooper
patent: 4635189 (1987-01-01), Kendall
patent: 4641274 (1987-02-01), Swank
patent: 4694396 (1987-09-01), Weisshaar et al.
patent: 4698752 (1987-10-01), Goldstein et al.
patent: 4716528 (1987-12-01), Crus et al.
patent: 4769772 (1988-09-01), Dwyer
patent: 4897780 (1990-01-01), Lakness

Affiliated with

Also associated with

Rating

Data access system for a file access processor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Data access system for a file access processor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Data access system for a file access processor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1514143