System and method for data migration

Data processing: database and file management or data structures – Database design – Data structure types

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C707S793000, C707S793000, C707S793000, C707S793000, C707S793000, C707S793000, C707S793000, C709S205000, C709S206000

Reexamination Certificate

active

06889232

ABSTRACT:
A method for concurrent data migration includes classifying files to be migrated into plural jobs, selecting media to which to migrate each job, and using plural drives concurrently to write the jobs to the media. The selection of a medium is performed in a way that prevents the number of writeable media from exceeding the number of available drives, unless no allocated medium has sufficient space to store any files in a migration job. A medium is preferentially selected that has already been allocated for writing, has space to store at least one file in the job, is not in use for another job, and can be robotically mounted on a drive. If such a medium does not exist, then the set of available media is canvassed to locate an alternative medium. The attributes of each medium are evaluated to determine which medium can be selected most consistently with the goals of (1) preventing the number of media from exceeding the number of drives, and (2) providing sufficient media to allow plural drives to be used concurrently. The technique can be embodied in a file management environment that transparently migrates files meeting certain criteria and stores the location of the migrated file in a reparse point provided by the file system.

REFERENCES:
patent: 5247660 (1993-09-01), Ashcraft et al.
patent: 5537585 (1996-07-01), Blickenstaff et al.
patent: 5802020 (1998-09-01), Kaneko et al.
patent: 6480971 (2002-11-01), Matsumoto et al.
patent: 6493787 (2002-12-01), Yamamoto et al.
Hurley, R.T., et al., “File Migration and File Replication: A Symbiotic Relationship,”IEEE Transactions on Parallel and Distributed SystemsJun. 1996, 7(6).
Klostermeyer, W., “Scheduling Process and File Migrations in a Distributed System,”Sixth Annual Conference on Parallel and Distributed Computing Systems, Kumar, A. et al. (Eds.), 1993, 9-13.
Cordrey, V., et al., “Moving Large File Systems On-Line, Including Existing HSM Filesystems,”13thSystems Administration Conference(LISA '99), 1999, 187-96.
Rothwell, P., “Storage Capacity Problems and Solutions,”Network Computing, Oct. 1995, 4(10), 34-37.
Colwell, S., “The World of Hierarchical Storage Management,”BYTE, Aug. 1996, 21(8).
Transcription of Dialog Web Abstract for Clark, A., “Hierarchical Storage Management,” Network News (UK Edition), May 1998.

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

System and method for data migration does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System and method for data migration, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for data migration will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3383215

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