Data storage subsystem
AssigneeHitachi, Ltd.
InventorsHiroshi Ohno, Kiichiro Urabe, Toshio Nakano, Hideo Tabuchi
Life of this patent
Estimating the term…
Abstract
A method for copying information from a first storage subsystem to a second storage subsystem is disclosed. The first and second storage subsystems are provided in a data storage system. The method comprises transmitting first data block from the first storage subsystem to the second storage subsystem, the first storage subsystem being associated with a first host computer and the second storage subsystem being associated with a second host computer; and transmitting first attribute information from the first storage subsystem to the second storage subsystem without intervention from the first host computer.
Claims20
A method for copying information from a first storage subsystem to a second storage subsystem, the first and second storage subsystems being provided in a data storage system, the method comprising:
- transmitting first data block from the first storage subsystem to the second storage subsystem, the first storage subsystem being associated with a first host computer and the second storage subsystem being associated with a second host computer;
- and
- transmitting first attribute information from the first storage subsystem to the second storage subsystem without intervention from the first host computer.
A storage subsystem coupled to a host computer, the storage subsystem comprising:
- a first communication interface coupled to the first host computer via a first communication link;
- a storage controller to handle data requests from the first host computer;
- a storage unit coupled to the storage controller and including a storage area;
- and
- a second communication interface coupled to a remote storage subsystem via a second communication link that is different from the first communication link,
- wherein the storage subsystem is configured to transmit first data block from the storage subsystem to the remote storage subsystem and to transmit first attribute information from the storage subsystem to the remote storage subsystem without intervention from the first host computer, the remote storage subsystem being associated with a second host computer.
A computer readable medium for providing a remote replication function in a storage system, the storage system including a first storage subsystem and a second storage subsystem, the medium comprising:
- code for transmitting first data block from the first storage subsystem to the second storage subsystem, the first storage subsystem being associated with a first host computer and the second storage subsystem being associated with a second host computer;
- and
- code for transmitting first attribute information from the first storage subsystem to the second storage subsystem without intervention from the first host computer.
Dependencies are inferred from the claim text.