System and method for discovery based data recovery in a store a

Details System and method for discovery based data recovery in a store a System and method for discovery based data recovery in a store a

1996-06-26

1998-11-03

Black, Thomas G.

Data processing: database and file management or data structures

Database design

Data structure types

707 10, 707203, 707204, 3951851, 39520031, 39520039, G06F 15163

Patent

active

058325140

ABSTRACT:
Systems and methods for discovery based data recovery in a store and forward replication system are presented. Data loss is discovered by comparing a list of changes made to a local copy of a replica object with a list of changes received over the network from other nodes also having a copy of the replica object. When the list of changes received contains changes that the local list does not, the local system knows its copy of the replica object is not up-to-date. Missing changes are then requested from other systems having the missing data. In making the request, care is taken to minimize the cost incurred in recovering the missing data and to balance network traffic among several other nodes, if possible.

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