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US 7,461,226 B2Granted
Multi-site remote-copy system
AssigneeHitachi, Ltd.
InventorsTakashige Iwamura, Takashi Oeda, Takao Satoo
Life of this patent
Estimating the term…
Abstract
Two storage areas are created in a first storage subsystem, a synchronous remote copy is performed from a first storage area included in the first storage subsystem to a storage area included in a second storage subsystem, and an asynchronous remote copy is performed from a second storage area included in the first storage subsystem to a storage area included in a third storage subsystem. Besides, a computer accessing the first storage subsystem performs mirroring to both the storage areas included in the first storage subsystem.
Claims8
A system comprising:
- a first storage system;
- a second storage system;
- and
- a third storage system,
- wherein data to be stored in the first storage system is duplicated to store the data to be stored in a first storage area and to store the duplicate of the data to be stored in a second storage area,
- wherein the first and second storage areas are included in the first storage system,
- wherein update data of the first storage area is transferred from the first storage area of the first storage system to the second storage system by synchronous remote copy, and
- wherein update data of the second storage area is transferred from the second storage area of the first storage system to the third storage system by asynchronous remote copy.
5 more elements
A system comprising:
- a first storage system;
- a second storage system;
- and
- a third storage system,
- wherein data in the first storage system is duplicated to store data in first and second storage areas,
- wherein the first and second storage areas are included in the first storage system,
- wherein update data of the first storage area is transferred from the first storage area of the first storage system to the second storage system by synchronous remote copy,
- wherein update data of the second storage area is transferred from the second storage area of the first storage system to the third storage system by asynchronous remote copy,
- wherein, in a case where a failure occurs in the first storage system, performing of processes, which have been performed by the computer included in the first storage system, is continued by the second storage system, and the update data of a storage area of the second storage system is transferred to the third storage system.
6 more elements
A system comprising:
- a first storage system;
- a second storage system;
- and
- a third storage system,
- wherein data in the first storage system is duplicated to store data in first and second storage areas,
- wherein the first and second storage areas are included in the first storage system,
- wherein update data of the first storage area is transferred from the first storage area of the first storage system to the second storage system by synchronous remote copy,
- wherein update data of the second storage area is transferred from the second storage area of the first storage system to the third storage system by asynchronous remote copy,
- wherein, in a case where a failure occurs in the first storage system, performing of processes, which have been performed by the first storage system, is continued by the third storage system,
- wherein the data stored in the second storage system is transferred to the third storage system and contents of the data of the second and the third storage systems is made to coincide with each other, and
- wherein content of data update into the third storage system is transferred to the second storage system.
8 more elements
A system comprising:
- a first storage system;
- a second storage system;
- and
- a third storage system,
- wherein data in the first storage system is duplicated to store data in first and second storage areas,
- wherein the first and second storage areas are included in the first storage system,
- wherein update data of the first storage area is transferred from the first storage area of the first storage system to the second storage system by synchronous remote copy,
- wherein update data of the second storage area is transferred from the second storage area of the first storage system to the third storage system by an asynchronous remote copy,
- wherein, in a case where a failure occurs in the first storage system, performing of processes, which have been performed by the first storage system, is continued by the third storage system, and
- wherein content of data update into the third storage system is transferred to the second storage system.
7 more elements
Dependencies are inferred from the claim text.