Patent ID: 7213105
Filing Date: 2007-05-01
Classification: G06F

Abstract:
1. A method for creating a logical volume in a physical storage device in a storage apparatus including at least one physical disk apparatus which is configured to define plural physical storage devices, the method comprising the steps of: receiving a request to create a logical volume, said request including a qualification of a property that the logical volume of the request satisfies if created in a physical storage device to which the logical volume of the request is assigned; and if the qualification of the property is satisfied for the logical volume of the request if created in a physical storage device to which the logical volume is assigned, creating the logical volume and assigning the created logical volume in one of the physical storage devices, wherein said one of the physical storage devices is assigned a previously existing logical volume for which the qualification of the property is satisfied before creation of the created logical volume, and wherein the method further comprises the steps, before said creating step, of: judging whether the qualification of the property of the previously existing logical volumes will remain satisfied if the logical volume of the request is created in response to the request, and if the qualification of the property of the previously existing logical volume will not remain satisfied if the logical volume of the request is created, denying the request.