Patent ID: 7673106
Filing Date: 2010-03-02
Classification: G06F

Abstract:
1. A management method for data transfer between storage systems in a computer system including: first, second and third storage systems which store data and are coupled to one another; a primary host computer coupled to the first storage system; and a secondary host computer coupled to the second storage system, the method carried out by the computer system and comprising: the computer system setting, when the primary host computer is in an active state, a data which is sent from the primary host computer and stored in the first storage system to be copied through a first copy route which is a synchronous copy from the first storage system to the second storage system, and a asynchronous copy from the second storage system to the third storage system, and the computer setting, when a failure occurs in the primary host computer, the secondary host computer to be in the active state and to change the first copy route to a second copy route which is a synchronous copy from the second storage system to the first storage system and a asynchronous copy from the first storage system to the third storage system, and to set a data which is sent from the secondary host computer and stored in the second storage system to be copied through the second copy route.