Computer system and control method of the same
AssigneeHitachi, Ltd.
InventorsSatoshi Kaneko, Yukinori Sakashita
Life of this patent
Estimating the term…
Abstract
A computer system functions to dynamically assign the storage capacity to the host computer. If an event such as a failure occurs in the logical resources, the performance requirements of the virtual volumes must be guaranteed to the host computer. Accordingly, the computer system comprising a storage apparatus, wherein the storage apparatus detects the occurrence of an event in the logical resources, compares the performance of the logical resources where the event occurred with the performance of the virtual volumes and, in accordance with the result of the comparison, sets the correspondence relationship of the virtual volumes to the logical resources.
Claims14
A computer system comprising a storage apparatus that allocates a real storage area of a storage device according to an access from a host computer,
- the storage apparatus comprising:
- a virtual logical area to be provided to the host computer;
- a real logical area including the real storage area;
- and
- a controller for controlling the allocation of the real storage area from the real logical area to the virtual logical area,
- wherein the controller:
- detects an event that occurs in the real logical area;
- and
- controls the allocation of the real storage area from the real logical area to the virtual logical area based on the event.
A method of controlling a computer system of sequentially allocating a real storage area of a storage device from a storage apparatus according to an access from a host computer,
- wherein the storage apparatus comprises a virtual logical area in which a storage capacity is virtualized, a real logical area including the real storage area, and a controller for controlling the allocation of the real storage area from the real logical area to the virtual logical area, and
- wherein the controller detects an event that occurs in the real logical area, and controls the allocation of the real storage area from the real logical area to the virtual logical area based on the event.
Dependencies are inferred from the claim text.