Patent 5367698 Issued on November 22, 1994. Estimated Expiration Date: November 22, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
A networked digital data processing system has two or more client devices, a network including a set of interconnections for transferring information between the client devices, at least one of which has a local data file storage element for locally storing and providing access to digital data files arranged in one or more client filesystems. A migration file server includes a migration storage element that stores data portions of files from the client devices, a storage level detection element that detects a storage utilization level in the storage element, and a level-responsive transfer element that selectively transfers data portions of files from the client device to the storage element.
Other References
Beeler, J. "GTE Tries Incremental Backup", ComputerWorld, vol. 21, No. 40, Oct. 9, 1989, pp. 61, 64
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 Tetrabyte 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