Patent ID: 8190846
Filing Date: 2012-05-29
Classification: G06F

Abstract:
1. A storage system coupled to a computer and a management computer, comprising: storage devices accessed by the computer; and a control unit for controlling the storage devices and external storage devices coupled to the storage system, wherein a 1 wherein the control unit: sets at least two of the first-type logical devices as storage areas included in a storage pool through mapping; sets the second-type logical device to be accessible by the computer if the storage area of the second type logical device is allocated in response to access to the second-type logical device from the computer; allocates the storage area of the second-type logical device to the storage area of the 1 changes the access characteristic of the second-type logical device by changing the allocated storage area of the second-type logical device to a storage area of the 2nd first-type logical device based on static information for the storage pool.