Data processing system, data processing method and storage apparatus
First Claim
1. A data processing system having a host system;
- and a storage apparatus that provides one or more first memory areas storing data read/written by the host system,wherein the storage apparatus includes a reservation unit that dynamically reserves one of the first memory areas as a spare second memory area when a failure occurs in any one of the first memory areas and there is no spare second memory area to migrate the data in that faulty first memory area to.
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Abstract
A compact data processing system suitable for long-term use that enables the maintenance of failure resistance without having to mount many spare disks or replace disks; a data processing method; and a storage apparatus for this data processing system are provided. In the data processing system, which has a host system and a storage apparatus that provides first memory areas for storing data read/written by the host system, the storage apparatus has a reservation unit that dynamically reserves one of the first memory areas as a spare second memory area when a failure occurs in any one of the first memory areas and there is no spare second memory area to migrate the data stored in that faulty memory area to.
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Citations
18 Claims
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1. A data processing system having a host system;
- and a storage apparatus that provides one or more first memory areas storing data read/written by the host system,
wherein the storage apparatus includes a reservation unit that dynamically reserves one of the first memory areas as a spare second memory area when a failure occurs in any one of the first memory areas and there is no spare second memory area to migrate the data in that faulty first memory area to. - View Dependent Claims (2, 3, 4, 5, 6)
- and a storage apparatus that provides one or more first memory areas storing data read/written by the host system,
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7. A data processing method performed in a data processing system having a host system;
- and a storage apparatus that provides one or more first memory areas for storing data read/written by the host system, the method comprising;
a step where the storage apparatus dynamically reserves one of the first memory areas as a spare second memory area when a failure occurs in any one of the first memory areas and there is no spare second memory area to migrate the data stored in that faulty first memory area to. - View Dependent Claims (8, 9, 10, 11, 12)
- and a storage apparatus that provides one or more first memory areas for storing data read/written by the host system, the method comprising;
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13. A storage apparatus for providing one or more first memory areas for storing data read/written by a host system, comprising:
a reservation unit that dynamically reserves one of the first memory areas as a spare second memory area when a failure occurs in any one of the first memory areas and there is no spare second memory area to migrate the data in that faulty first memory area to. - View Dependent Claims (14, 15, 16, 17, 18)
Specification