Patent
Transferring data in a digital data processing system
Scott H. Davis,William L. Goleman,James A. Zahrobsky,David W. Thiel,Robert G. Bean +4 more
- 22 Jun 1990
454
TL;DR: In this article, a shadow set is used to transfer data between two storage media in shadow set, the storage media being accessible to one or more host processors, and the data specified in the command received from the host from the first storage medium to the second storage medium in a series of subtransfers.
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Abstract: A method and apparatus for transferring data between two storage media, and is used in an illustrative embodiment to transfer data between two storage media in a shadow set, the storage media being accessible to one or more host processors. The method of the preferred embodiment includes the steps of: A. receiving a command from one of the host processors, the command specifying data to be transferred from a first storage medium to a second storage medium; B. transferring the data specified in the command received from the host from the first storage medium to the second storage medium in a series of subtransfers, each of the subtransfers transferring a portion of the data; and C. processing one or more I/O requests to the shadow set received from one or more host processors by, for each received I/O request: a. implementing the I/O request if the I/O request does not involve a section of the shadow set currently involved in one of the subtransfers; and b. stalling the I/O request if the I/O request involves a section of said shadow set currently involved in one of the subtransfers, and implementing the I/O request when the subtransfer has completed.
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Citations
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References
Patent
Database backup method
Fred Kwok-Fai Ng
- 03 Jul 1985
TL;DR: In this paper, a method of generating a backup copy of a database system is proposed, where modifications made to the database since the generation of a prior backup copy are summarized in a bit map on a page basis.
540
Patent
Memory back-up system
Jack J. Stiffler,Michael J. Budwey,James M. Nolan +2 more
- 28 Jun 1985
TL;DR: In this article, a non-write-through cache memory associated with each of the system's processing elements stores computations generated by that processing element, and at a context switch, the stored information is sequentially written to two separate main memory units.
352
Patent
Virtual storage system and method
Barry B. White
- 02 Jun 1982
TL;DR: In this paper, a virtual storage system for use in conjunction with a host computer is described, which divides user-defined data sets into blocks of a size convenient for storage on, e.g., magnetic media and individually assigns these blocks to locations determined external to the host.
295
Patent
Method for the dynamic replication of data under distributed system control to control utilization of resources in a multiprocessing, distributed data base system
Thomas Piatt Daniell,Robert Carnegie Harding,Neil Judd Lewis,Sven Halvar Hansson Nauckhoff +3 more
- 27 Nov 1981
TL;DR: In this paper, the authors propose a method for dynamic replication of data under distributed system control to control the utilization of resources in a multiprocessing, distributed data base system.
216
Patent
Shadow memory system for storing variable backup blocks in consecutive time periods
John E. Davis
- 30 Jun 1989
TL;DR: In this paper, a shadow memory system is proposed which is able to survive multiple fast sequence power failures and includes a volatile main memory and shadow memory subsystem which continually monitors write accesses to the main memory.
184