Patent ID: 7529901
Filing Date: 2009-05-05
Classification: G06F

Abstract:
1. A storage system, comprising: a first storage device coupled to an information processing device and having a first controller and first disk drives, a first portion of said first disk drives being related to a first logical volume as a primary logical volume and a plurality of second portions of said first disk drives being related to a plurality of second logical volumes; said first controller receiving a plurality of data, which are sent from said information processing device and are targeted to said first logical volume, and storing a first portion of said plurality of data in said first portion of said first disk drives and storing said first portion of said plurality of data in said second portions of said first disk drives in alternate shifts and transferring data stored in said second portions of said first disk drives to a second storage device; said second storage device coupled to said first storage device and having a second controller and second disk drives, a third portion of said second disk drives being related to a third logical volume as a secondary volume forming a pair relationship with said primary volume; said second controller receiving said data transferred from said first controller and storing a first portion of said transferred data in said third portion of said second disk drives; a fourth portion of said second disk drives in said second storage device being related to at least one fourth logical volume, wherein said second controller stores said data transferred from said first controller in said fourth portion of said second disk drives before storing said first portion of said transferred data in said third portion of said second disk drives, and wherein said storage system is configured to provide information relating to said first logical volume, said plurality of second logical volumes, and said third logical volume for display at said information processing device or another information processing device coupled to the storage system.