Patent ID: 7954003

Claim:
A data storing system comprising: a first storage system providing a first logical volume; a second storage system providing a second logical volume; a third storage system providing a third logical volume; a management computer coupled to the first storage system, the second storage system, and the third storage system, wherein the first logical volume and the second logical volume forms a first replication pair which indicates the first logical volume is a replication source and the second logical volume is a replication destination, and the second logical volume and the third logical volume forms a second copy pair which indicates the second logical volume is the replication source and the third logical volume is the replication destination, wherein the first replication pair and the second replication pair each have a pair status selected from: a first pair status in which update data stored in a volume of the replication source are stored in a volume of the replication destination; a second pair status in which storing the update data, which is stored in the volume of the replication source, to the volume of the replication destination, is suspended; and an intermediate pair status, which is an intermediate status from the second pair status to the first pair status, and in which the suspended update data are copied from the volume of the replication source to the volume of the replication destination, and wherein, in case of the pair status of the first replication pair is the intermediate pair status and the pair status of the second replication pair is the first pair status, the management computer displays that data stored in the third logical volume is inconsistent due to the pair status of the first replication pair being the intermediate pair status and the pair status of the second replication pair being the first pair status.