ASYNCHRONOUS REMOTE REPLICATION SYSTEM OF DISTRIBUTED STORAGE AND ASYNCHRONOUS REMOTE REPLICATION METHOD OF DISTRIBUTED STORAGE

摘要

PROBLEM TO BE SOLVED: To provide an asynchronous remote replication system of a distributed storage capable of accelerating asynchronous copy.;SOLUTION: According to the embodiment, an asynchronous remote replication system of a distributed storage includes map information holding means and data replication means on each of nodes of a first distributed storage. The map information holding means holds second map information on which identifiers of a plurality of storage apparatuses in a second distributed storage are associated with a fixed number of serial numbers. The data replication means selects one storage apparatus among the plurality of storage apparatuses in the second distributed storage based on an identifier of each of chunks and the second map information for each chunk in which a first logical disk is divided by a fixed length in order to create a replication of data stored in one or more storage apparatuses in the own node on the storage apparatus in the second distributed storage, and creates the replication of the data on the selected storage apparatus.;SELECTED DRAWING: Figure 2;COPYRIGHT: (C)2018,JPO&INPIT