System and method for replicating data in resource sets

Details System and method for replicating data in resource sets System and method for replicating data in resource sets

2005-07-12

2005-07-12

Rones, Charles (Department: 2165)

Data processing: database and file management or data structures

Database design

Data structure types

C707S793000, C707S793000

Reexamination Certificate

active

06917951

ABSTRACT:
Described is a system and method for replicating each of a set of resources to a subject computer in a replica set prior to making use of a resource in the set of resources. The set of resources includes resources that are dependent upon each other for a proper functioning of the group. A manifest file that identifies each resource in a group of interrelated resources is used. The manifest file is generated at one computer in the replica set (typically the computer at which a modification to one of the interrelated resources occurred). When the modification occurs to one of the set of resources, the manifest file is transmitted (e.g., itself replicated) to each computer in the replica set. The manifest file includes an indicator that identifies the manifest file as a special file. When received at another computer in the replica set, a service evaluates the manifest file to identify whether the appropriate versions of the identified resources exist at the receiving computer. If not, the service at that computer awaits the receipt of each resource. The wait period may include delaying the execution of an application associated with (or even included within) the manifest file from launching. Alternatively, the FRS could simply disallow access to one or more resources identified in the manifest file until all have arrived. When all have arrived, the FRS releases control of the identified resources, which may then operate or be accessed in the ordinary manner.

REFERENCES:
patent: 5664098 (1997-09-01), Bianchi et al.
patent: 5787247 (1998-07-01), Norin et al.
patent: 6353926 (2002-03-01), Parthesarathy et al.
patent: 2001/0010046 (2001-07-01), Muyres et al.
Windows 2000 Resource Kits, “Introduction to FRS,”File Replication Service, pp. 1-3, Aug. 31, 2000.
Windows 2000 Resource Kits, “How FRS Works,”File Replication Service, pp. 1-4, Aug. 31, 2000.

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