Storage system, control program and storage system control 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.
Claims18
A storage system, comprising:
- at least a logical volume storing data from a host computer;
- a plurality of processor packages, each of which includes at least one processor and a local memory;
- and
- a shared memory shared by the processors, which stores control information comprising at least a first type and a second type of control information for processing,
- wherein:
- each of the local memories is divided into a plurality of areas, one of the areas being dedicated for the first type of control information;
- and
- each of the processors is configured to put a part of the first type of control information in the one of the areas of the local memory in the processor package where the processor is included.
A method for controlling a storage system including at least a logical volume storing data from a host computer, a plurality of processor packages, each of which includes at least one processor and a local memory;
- and a shared memory shared by the processors, which stores control information comprising at least a first type and a second type of control information for processing, said method comprising:
- dividing each of the local memories into a plurality of areas, one of the areas being dedicated for the first type of control information;
- and
- putting, for each of the processors, a part of the first type of control information in the one of the areas of the local memory in the processor package where the processor is included.
Dependencies are inferred from the claim text.