Patent ID: 8046555
Filing Date: 2011-10-25
Classification: G06F

Abstract:
1. A method of splitting a copy stored in a plurality of storage systems in a system, the system comprising: a first storage system storing a data, a second storage system; a third storage system; and a management computer containing a management information managing the first, second and third storage systems forming the system, the method comprising the steps of: sending a first instruction from the management computer to the first storage system instructing the first storage system to copy the data to the second storage system, checking if the data contains a referral information targeting to the third storage system, sending a first part of the data, except for a second part of the data to which the third storage system is targeted, to the second storage system from the first storage system, sending, from the first storage system to the second storage system, a referral information instead of the second part of the data, if the data contains the referral information, and sending, from the first storage system to the third storage system, the second part of the data to which the third storage system is targeted.