Storage system and method for prestaging data in a cache for...

Electrical computers and digital processing systems: memory – Storage accessing and control – Shared memory area

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Reexamination Certificate

active

07120759

ABSTRACT:
A storage system and method for prestaging data in a cache based on relative changes in the frequency of data access and relative changes in the effectiveness of previous prestage operations. The relative changes in the frequency of data access are determined by storing statistics of data access to all regions in the system and comparing recent access statistics to the stored data. Access statistics include data location, I/O size and access frequency. The relative changes in the effectiveness of previous prestage operations are detected by recording the number of previous prestaging operations for a region, recording the number of I/O requests for data that has been prestaged, and dividing the number of I/O requests for previously prestaged data in a region during a time period by the number of previous prestage operations for the region during the same time.

REFERENCES:
patent: 4780808 (1988-10-01), Moreno et al.
patent: 5426761 (1995-06-01), Cord et al.
patent: 6185659 (2001-02-01), Milillo et al.
patent: 6260115 (2001-07-01), Permut et al.
patent: 6345338 (2002-02-01), Milillo et al.
patent: 6449697 (2002-09-01), Beardsley et al.
patent: 2002/0178331 (2002-11-01), Beardsley et al.
patent: 3062148 (1991-03-01), None
X. Shen et al., A Novel Application Devleopment Environment for Large-Scale Scientific Computations—Northwestern University, Evanston, IL, (XHSHEN@ECE.NWU.EDU).
IBM Technical Disclosure Bulletin, Multisequencing a Single Instruction Stream Meta High-End Machine Operations of the Instruction Processing Unit, vol. 36 No. 04 Apr. 1993.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Storage system and method for prestaging data in a cache for... 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 system and method for prestaging data in a cache for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Storage system and method for prestaging data in a cache for... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3710939

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.