Patent ID: 8156369
Filing Date: 2012-04-10
Classification: G06F

Abstract:
1. A data storage system comprising: a first storage system as a first primary storage system, which has first storage ports and first logical volumes which store write data received from a computer coupled to the first storage system; a second storage system as a first secondary storage system, which has second storage ports coupled to the first storage ports, and second logical volumes which store copies of data of the first logical volumes by remote copying; a third storage system as a second primary storage system, which has third storage ports and third logical volumes which store write data received from the computer coupled to the third storage system; a fourth storage system as a second secondary storage system, which has fourth storage ports coupled to the third storage ports, and fourth logical volumes which store copies of data of the third logical volumes by remote copying; and a management system, which stores copy information which holds correspondence of copy pairs formed from the first logical volumes and the second logical volumes and formed from the third logical volumes and the fourth logical volumes, with copy groups concerned with a sequence of write data in the computer, where a first copy pair formed from the first logical volumes and the second logical volumes, and a second copy pair formed from the third logical volumes and the fourth logical volumes, are linked and bundled together as a bundled copy group for effecting bundled remote copying of data extending across the first and second primary storage systems over to the first and second secondary storage systems, wherein the management system stores path remote copy relevant information which indicates correspondence of physical paths including the first storage ports, the second storage ports, the third storage ports, the fourth storage ports, logical paths, and the copy groups including the bundled copy group by remote copying, and wherein the management system receives failure information designating a certain physical path included in the physical paths, and specifies a certain logical path which is part of the logical paths and which corresponds to the certain physical path and the bundled copy group which corresponds to the certain logical path, by referring to the path remote copy relevant information, and displays identification information of the bundled copy group as a copy group affected by the failure in the certain physical path.