Patent ID: 7293050
Filing Date: 2007-11-06
Classification: G06F,Y10S

Abstract:
1. A remote copy system comprising: a management software stored on a computer readable storage medium and implemented in one or more computers; a plurality of first storage systems, each comprising a first control section to be coupled to the computers, at least one first logical volume for storing data received from the computers, and a first storage area for storing data to be transmitted to a second storage system; and a plurality of second storage systems, each coupled to a first storage system and comprising a second control section, at least one second logical volume for storing a replica of data stored in the first logical volume of at least one of the plurality of first storage systems, and a second storage area for storing data received from the at least one of the plurality of first storage systems, wherein first control sections of the plurality of first storage systems receive a plurality of first write requests from the computers and store a plurality of first write data, which relate to the plurality of first write requests and are stored in first logical volumes of the plurality of first storage systems, in first storage areas of the plurality of first storage systems, wherein the first control sections of the plurality of first storage systems defer operations for executing a plurality of second write requests received from the computers, and store a plurality of identification information, each corresponding to a marker and received from the management software, and transmit completion reports to the management software after storing the plurality of identification information, wherein the management software sends instructions, for restarting the operations for executing the plurality of second write requests, to the plurality of first storage systems after the management software receives the completion reports, wherein the first control sections of the plurality of first storage systems transfer the plurality of first write data and the plurality of identification information to the plurality of second storage systems, wherein second control sections of the plurality of second storage systems receive the plurality of first write data and the plurality of identification information from the plurality of first storage systems, and wherein the second control sections of the plurality of second storage systems control operations according to a plurality of instructions sent from at least one of the management software and another management software, stored on other computer readable storage medium and implemented in one or more other computers coupled to the plurality of second storage systems, such that the plurality of first write data received from the plurality of first storage systems are stored in second logical volumes of the plurality of second storage systems when the plurality of identification information are designated by the plurality of instructions sent from the at least one of the management software and the another management software.