Storage apparatus and management unit setting method
AssigneeHitachi, Ltd.
InventorsTakeo Fujimoto, Yutaka Takata
Life of this patent
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Abstract
A storage apparatus that provides a dynamically extensible virtual volume for a host apparatus that accesses the virtual volume is characterized by including: a management unit setting part for setting a management unit, with which an area for storing data sent from the host apparatus is divided on a predetermined-area basis for management, for a pool area that provides a storage area to be assigned to the virtual volume; and a management unit resetting part for resetting the management unit set by the management unit setting part via analysis of the status of access from the host apparatus to the data at a predetermined time to make the management unit optimum for the status of access from the host apparatus to the data.
Claims14
A storage apparatus that provides a dynamically extensible virtual volume for a host apparatus that accesses the virtual volume, comprising:
- a management unit setting part for setting a management unit, with which an area for storing data sent from the host apparatus is divided on a predetermined-area basis for management, for a pool area that provides a storage area to be assigned to the virtual volume;
- and
- a management unit resetting part for resetting the management unit set by the management unit setting part via analysis of the status of access from the host apparatus to the data at a predetermined time to make the management unit optimum for the status of access from the host apparatus to the data.
A management unit setting method for a storage apparatus that provides a dynamically extensible virtual volume for a host apparatus that accesses the virtual volume, comprising:
- a first step of setting a management unit, with which an area for storing data sent from the host apparatus is divided on a predetermined-area basis for management, for a pool area that provides a storage area to be assigned to the virtual volume;
- and
- a second step of resetting the management unit set in the first step via analysis of the status of access from the host apparatus to the data at a predetermined time to make the management unit optimum for the status of access from the host apparatus to the data.
Dependencies are inferred from the claim text.