Patent ID: 7343464
Filing Date: 2008-03-11
Classification: G06F

Abstract:
1. A storage controller connected communicably to a host system and another storage controller and which performs data processing according to a request from said host system, the storage controller comprising: at least one or more first logical devices to be accessed by said host system; and at least one or more virtual devices for connecting said first logical devices and one or more storage devices, wherein at least one of said virtual devices is connected to a second logical device of said other storage controller, and an access attribute of said first logical device and an access attribute of said second logical device are made to coincide by transmitting and receiving access attribute information of at least either said first logical device or said second logical device to and from said other storage controller, and wherein said second logical device is provided with an information configuration area for retaining the access attribute information set in said second logical device, and said information configuration area is connected to at least one or more said virtual devices.