Digital data storage system with improved data migration

Details Digital data storage system with improved data migration Digital data storage system with improved data migration

1989-12-19

1994-01-04

Kulik, Paul V.

Boots, shoes, and leggings

395425, 364DIG1, 36422281, 3642434, 364246, 3642461, 364285, 3642851, G06F 1200, G06F 1540

Patent

active

052768678

ABSTRACT:
A digital data storage apparatus has primary, secondary and backing storage elements characterized by respectively longer access times. A level detector signals when the quantity of data in the secondary store exceeds a threshold amount. A data migrator responds by moving selected data files from the secondary store to the backing store. The apparatus also includes a baseline back-up element that stores archive copies of a set of selected data files. A full back-up element stores archive copies of those files that, (1) were originally copied to the baseline back-up set but have since changed, or (2) are not otherwise within the baseline back-up set. For those files which were originally copied to the baseline back-up set and which have not changed, the full back-up element stores pointers indicating locations of the respective files in the baseline back-up set.

REFERENCES:
patent: 3806888 (1974-04-01), Brickman et al.
patent: 4429363 (1984-01-01), Duke et al.
patent: 4771375 (1988-09-01), Beglin et al.
patent: 4934823 (1990-06-01), Okami
patent: 5018060 (1991-05-01), Gelb et al.
patent: 5089958 (1992-02-01), Horton et al.
patent: 5133065 (1992-07-01), Cheffetz et al.
Beeler, J. "GTE Tries Incremental Backup", ComputerWorld, vol. 21, No. 40, Oct. 9, 1989, pp. 61,64.
B. Brawn et al., "Data Migration and Staging Facility," IBM Technical Disclosure Bulletin, vol. 16, No. 1, Jun. 1973, pp. 205-208.
Miller (1988) "A Reference Model for Mass Storage System".
Muuss et al., "Bump The BRL/USNA Migration Project", Mar. 5, 1989, pp. 1-19.
Thompson et al., "The Operation and Use of a 2 Terabyte Optical Archival Store", Digest of Papers, Ninth IEEE Symposium, Nov., 1988, pp. 88-92.
Arneson, D. A., "Mass Storage Archiving in Network Environments", Digest of Papers, IEEE Symposium, Oct.-Nov. 1988, pp. 45-50.
Hume, A., "The File Motel--An Incremental Backup System for Unix", Summer USENIX '88, pp. 61-72.
Arnold et al., "Automatic UNIX Backup in a Mass Storage Environment", Proceed. of USENIX Assoc., Feb. 1988, pp. 131-136.
Christman, "Experience With File Migration", Los Alamos National Lab report No. LA-9014, Oct. 1981.
McLarty et al., "A Functional View Of The Los Alamos Central File System", Sixth IEEE Symposium, Jun. 1984, pp. 10-16.
Collins et al., "A Network File Storage System", Fifth IEEE Symposium, Oct. 1982, pp. 99-102.
Gwatking, Electronics Research Lab Adelaide (Australia), Report No. ERL-0009-TR, Apr. 1978.
Miller, "Direct Access Data Migration System", U.S.D.A. Report No. USDA/DF-78/016, Mar. 1978.
Johnson, C., "IBM 3850--Mass Storage System", AFIPS Conference Proceedings, May 1975, vol. 44, pp. 509-514.
Johnson, C., "The IBM 3850: A Mass Storage System with Disk Characteristics", Proc. of the IEEE, vol. 63, No. 8, Aug. 1975, pp. 1166-1170.
Murray, "Document Based on Clustered Files", Thesis, Cornell Univ. Dept. of Computer Science, Ithaca, NY, May 1972.
Fiedler, "QBAX: An Incremental Backup Utility", Microsystems USA, vol. 4, No. 10, Oct. 1983, p. 84.
McGee, "Epoch Combines Magnetic Optical Drives", Computer Systems News, Oct. 31, 1988.
Epoch Systems press release, "Epoch Systems To Develop New Generation of High Capacity File Servers For Networked Workstations", Mar. 14, 1988.
Epoch Systems "Order Acknowledgement," Dec. 16, 1988, Epoch Systems Inc.
Epoch Systems "Invoice," Dec. 16, 1988, Epoch Systems Inc.
GTE Directories Service Corporation "Invoice," Dec. 16, 1988.
Edward Mendelson, "Backup Software For the Moment After", PC Magazine, Aug. 1989, pp. 269-319.
"Tape Backup Measuring Speed & Cost Per Megabyte", PC Magazine, Feb. 11, 1986, pp. 106-132.

Affiliated with

Also associated with

Rating

Digital data storage system with improved 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 Digital data storage system with improved data migration, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital data storage system with improved data migration will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-315643