Patent ID: 8352766
Filing Date: 2013-01-08
Classification: G06F,Y02D

Abstract:
1. A system comprising: at least two secondary storage systems for each receiving from a first storage system, a journal including one or more data element that is written in a primary logical volume provided in the first storage system; and a management device for managing said secondary storage system, each secondary storage system of said at least two secondary storage systems including: said management device including: wherein said reception unit of said target secondary system receives said power saving command from said management device, said restore control unit of said target secondary system suspends said restoration processing in response to reception of said power saving command, said storage device control unit of said target secondary system executes power saving on said storage device relating to said secondary logical volume of said target secondary system, after said restoration processing is suspended; and, said journal storage area of said target secondary system continues to operate in a non-power-saving mode, and said journal update unit of said target secondary system continues writing said journal received from said first storage system, into said journal storage area of said target secondary system, while said storage device control unit of said target secondary system executes power saving on said storage device relating to said secondary logical volume.