Patent ID: 7139871
Filing Date: 2006-11-21
Classification: G06F,Y10S

Abstract:
1. A storage system managed by multiple managers, the system comprising: multiple logical volumes managed by different managers; a controller controlling the multiple logical volumes; a Logical-Layer management table, stored in the controller, mapping first identification information and first management information, said first identification information including a logical-object ID for identifying each of the multiple logical volumes, said first management information including a host LUN of a logical volume mapped to said first identification information, said logical-object ID having a unique ID along with a unique serial number, said host LUN being a re-defined LUN used by a host computer for identifying a logical volume; a Physical-Layer management table, stored in the controller, mapping second identification information and second management information, said second identification information including a physical-object ID for identifying each of the multiple logical volumes, said second management information including an internal LUN mapped to said second identification information, said physical-object ID having a unique ID along with a unique serial number, said internal LUN being used in the storage system for identifying a logical volume; a mapping table, stored in the controller, describing correspondence information between the first identification information recorded in the Logical-Layer management table and second identification information recorded in the Physical-Layer management table; and a management-right control table, stored in the controller, describing correspondence information between the first identification information recorded in the Logical-Layer management table and manager identification information including a user-group ID and manager ID of a manager having a management right for a logical volume identified by the first identification information, wherein, based on an instruction having manager identification information of a manager in accordance with an input from the manager managing one of the multiple logical volumes, the controller outputs, to a computer used by the manager, first identification information mapped to the manager identification information in the management-right control table and first management information of a logical volume identified by the first identification information in the Logical-Layer management table; and wherein the controller receives a control instruction having the first identification information in accordance with an input from the manager, identifies an internal LUN based on second identification information mapped to the received first identification information mapped to the received first identification information with reference to the Physical-Layer management table and the mapping table, and controls the logical volume identified by the identified internal LUN in accordance with the received control instruction.