Storage System, Control Program and Storage System Conttrol Method
AssigneeHitachi, Ltd.
InventorsShintaro Ito, Norio Shimozono
Life of this patent
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Abstract
There is provided a storage system including one or more LDEVs, one or more processors, a local memory or memories corresponding to the processor or processors, and a shared memory, which is shared by the processors, wherein control information on I/O processing or application processing is stored in the shared memory, and the processor caches a part of the control information in different storage areas on a type-by-type basis in the local memory or memories corresponding to the processor or processors in referring to the control information stored in the shared memory.
Claims14
A storage system comprising:
- one or more volumes;
- one or more processors;
- one or more local memories corresponding to the processor or processors;
- and
- a shared memory, which is shared by the processors, wherein:
- control information on I/O processing or processing relating to a storage application is stored in the shared memory;
- and
- the processor caches a part of the control information in different storage areas on a type-by-type basis in the local memory or memories corresponding to the processor or processors in referring to the control information stored in the shared memory.
A storage system control method for a storage system having one or more volumes, one or more processors, one or more local memories corresponding to the processor or processors, and a shared memory, which is shared by the processors, in which control information on I/O processing or processing relating to a storage application is stored in the shared memory,
- the method comprising the step of:
- performing processing by the processor of caching a part of the control information in different storage areas on a type-by-type basis in the local memory or memories corresponding to the processor or processors in referring to the control information stored in the shared memory.
A control program that operates on one or more processors in a storage system having one or more volumes, the one or more processors, one or more local memories corresponding to the processor or processors, and a shared memory, which is shared by the processors, in which control information on I/O processing or processing relating to a storage application is stored in the shared memory,
- the program comprising:
- performing processing by the processor of caching a part of the control information in different storage areas on a type-by-type basis in the local memory or memories corresponding to the processor or processors in referring to the control information stored in the shared memory.
Dependencies are inferred from the claim text.