Patent ID: 7225190
Filing Date: 2007-05-29
Classification: G06F,Y10S

Abstract:
1. A remote copy system comprising: a copy group manager; a plurality of first storage systems including a plurality of first logical disks and first controllers; a plurality of second storage systems, coupled to the plurality of first storage systems, including a plurality of second logical disks and second controllers; and a plurality of third storage systems, coupled to the plurality of first storage systems, including a plurality of third logical disks and third controllers; wherein a plurality of synchronous type remote copy pairs are configured between the plurality of first logical disks and the plurality of second logical disks, to transmit data, received from a host computer for the plurality of first logical disks, from the plurality of first storage systems to the plurality of second storage systems by a synchronous remote copy procedure, and to write the data in the plurality of the second logical disks while keeping consistency of data in the plurality of second logical disks; wherein a plurality of asynchronous type remote copy pairs are configured between the plurality of first logical disks and the plurality of third logical disks, to transmit data, received from a host computer for the plurality of first logical disks, from the plurality of first storage systems to the plurality of third storage systems by an asynchronous remote copy procedure, and to write the data in the plurality of the third logical disks while keeping consistency of data in the plurality of third logical disks; wherein the copy group manager is configured to manage a synchronous copy group including the plurality of synchronous type remote copy pairs, and an asynchronous copy group including the plurality of asynchronous type remote copy pairs, to receive a report related to a failure of a remote copy process regarding one of the first logical disks from the plurality of first storage systems, to obtain information to specify one of the copy groups including one of the remote copy pairs related to the failure, and to decide whether the copy group, including the one of the remote copy pairs related to the failure, is the synchronous copy group or the asynchronous copy group, in order to suspend remote copy processes for the plurality of remote copy pairs included in the decided copy group, wherein, in the plurality of first logical disks, one of the first logical disks in which data sent in accordance with an SCSI protocol is written, and another of the first logical disks in which data sent in accordance with a protocol other than the SCSI protocol is written, are included.