Computer system and redundant element configuration method
AssigneeHitachi, Ltd.
InventorsTakaki NAKAMURA, Hideo SAITO, Naruki KURATA, Takahiro YAMAMOTO
Life of this patent
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Abstract
Reliability in a storage system can be easily and appropriately improved. In a computer system including a storage system configured to provide a plurality of instances in any one of a plurality of subzones divided by risk boundaries, a processor of the computer system is configured to make a storage controller that controls I/O processing for a volume based on a capacity pool provided by a plurality of storages redundant to the plurality of instances provided in the plurality of subzones.
Claims13
A computer system comprising:
- a storage system configured to provide a plurality of instances in any one of a plurality of predetermined subzones defined by risk boundaries;
- and
- a processor configured to implement a plurality of spread placement groups (SPGs), each SPG having a plurality of respective instances,
- wherein each of the plurality of instances in each SPG are arranged in different respective subzones,
- wherein the plurality of instances implement a function of a redundant storage controller that controls input/output (I/O) processing for a volume based on a capacity pool provided by a plurality of storage devices redundant to the plurality of instances provided in different subzones in the SPGs,
- wherein data is redundantly stored in the plurality of storage devices of the volume by the plurality of instances implementing the redundant storage controller function,
- wherein a plurality of instances in different SPGs are arranged in a same subzone, and
- wherein a redundancy degree of the redundancy storage controller function is a redundancy degree n, which is a redundancy degree that withstands a failure occurring in n subzones and each respective redundancy storage controller function implements the n number of SPGs.
(canceled)
A redundant element configuration method using a computer system, the computer system including a storage system configured to provide a plurality of instances in any one of a plurality of predetermined subzones defined by risk boundaries, the method comprising:
- implementing a plurality of spread placement groups (SPGs), each SPG having a plurality of respective instances, respectively, wherein each of the plurality of instances in each SPG are arranged in different respective subzones;
- and
- implementing a function of a redundant storage controller that controls 1/O processing for a volume based on a capacity pool provided by a plurality of storage devices redundant to a plurality of instances provided in different subzones in the SPGs,
- wherein data is redundantly stored in the plurality of storage devices of the volume by the plurality of instances implementing the redundant storage controller function,
- wherein a plurality of instances in different SPGs are arranged in a same subzone, and
- wherein a redundancy degree of the redundancy storage controller function is a redundancy degree n, which is a redundancy degree that withstands a failure occurring in n subzones and each respective redundancy storage controller function implements the n number of SPGs.
Dependencies are inferred from the claim text.