Storage management system with file aggregation

Details Storage management system with file aggregation Storage management system with file aggregation

1997-10-29

2000-08-01

Kulik, Paul V.

Data processing: database and file management or data structures

Database design

Data structure types

707204, G06F 1730

Patent

active

060980745

ABSTRACT:
A data storage subsystem employs managed files, each comprising one or an aggregation of multiple individual, constituent user files, to reduce file management overhead costs. After receiving user files from a client station, the subsystem creates a contiguous managed file by aggregating selected ones of the received user files according to certain predetermined criteria. Managed file creation and use are transparent to the client stations. To aid in file management, the subsystem provides a mapping table that lists, for each user file, a corresponding location of that user file within a managed file. With this hardware and table structure, the system conducts file management with reduced overhead. For example, internal data management operations include an improved copy operation where a managed file is copied as a contiguous unit between first and second locations in the data storage subsystem. In addition to internal data management operations, the subsystem satisfies client output requests, including retrieve operations initiated when the subsystem receives a retrieval request and identified user file from a client station. In response, the subsystem employs the mapping table to find the identified user file's location in the managed file. Referencing the identified user file's location in the managed file enables the subsystem to obtain a copy of the identified user file, which is ultimately provided to the requesting client station.

REFERENCES:
patent: 4027288 (1977-05-01), Barton et al.
patent: 4310883 (1982-01-01), Clifton et al.
patent: 4499539 (1985-02-01), Vosacek
patent: 5218696 (1993-06-01), Baird et al.
patent: 5403639 (1995-04-01), Belsan et al.
patent: 5423034 (1995-06-01), Cohen-Levy et al.
patent: 5513351 (1996-04-01), Grantz
patent: 5535390 (1996-07-01), Hildebrandt
patent: 5561793 (1996-10-01), Bennett et al.
patent: 5579507 (1996-11-01), Hosouchi et al.
patent: 5592669 (1997-01-01), Robinson et al.
patent: 5619699 (1997-04-01), Golshani et al.
patent: 5623667 (1997-04-01), Golshani et al.
patent: 5627967 (1997-05-01), Dauerer et al.
patent: 5627985 (1997-05-01), Fetterman et al.
patent: 5634050 (1997-05-01), Krueger et al.
patent: 5644766 (1997-07-01), Coy et al.
patent: 5649200 (1997-07-01), Leblang et al.
patent: 5673382 (1997-09-01), Fetterman et al.
patent: 5715455 (1998-02-01), Macon, Jr. et al.
patent: 5727197 (1998-03-01), Burgess et al.
patent: 5745752 (1998-04-01), Hurvig et al.
patent: 5764978 (1998-06-01), Msumoto
patent: 5794279 (1998-08-01), French et al.
Abstract No. 89-144137 for JP 01-144137, T. Nishimura, "File Managing System".
"DASD Fast Write from Multiple Sources Using Journals", IBM Technical Disclosure Bulletin, vol. 38, No. 6, Jun. 1995, pp. 425-431.
"Packing Variable-Sized Segments in the Swap File of a Paging-Based Virtual Memory System", IBM Technical Disclosure Bulletin, vol. 39, No. 3, Mar. 1996, pp. 301-302.
"Optical Library Cache Reclaim Strategies", IBM Technical Disclosure Bulletin, vol. 37, No. 6B, Jun. 1994, pp. 469-471.

Affiliated with

Also associated with

Rating

Storage management system with file aggregation does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Storage management system with file aggregation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Storage management system with file aggregation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-673562