Storage system and processing efficiency improving method of storage system
AssigneeHitachi, Ltd.
InventorsKazuyoshi Serizawa, Akira Deguchi, Norio Shimozono
Life of this patent
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Abstract
A storage system 200 has a storage device 240 providing a plurality of logical volumes 250 used as data storage areas of a host 100 and a plurality of MPPKs 210 executing data IO processes for the logical volumes 250 from the host 100 and, when it is determined whether the MPPKs 210 correlated with the logical volumes 250 must be changed based on a storage function such as local copy set for the logical volumes 250, if it is determined that the change is necessary, the MPPK 210 after the change is determined such that the logical volumes 250 are correlated with the same MPPK 210.
Claims15
A storage system having a storage device that includes a storage medium providing a plurality of unit logical storage areas used as data storage areas of an external apparatus and a plurality of processing devices communicatively coupled to the storage device to execute data IO processes for the unit logical storage areas from the external apparatus, the storage system comprising:
- a responsible processing device retaining unit that retains the unit logical storage areas and the processing devices executing the data IO processes of the unit logical storage areas in a correlated manner;
- a storage function retaining unit that retains the unit logical storage areas and storage function information that is information set for the unit logical storage areas to indicate usage aspects of the unit logical storage areas in a correlated manner;
- and
- a processing device changing unit that acquires from the responsible processing device retaining unit the processing device correlated with each of the logical storage areas based on the storage function set for the unit logical storage areas acquired from the storage function retaining unit for the unit logical storage areas to determine whether a change of the responsible processing device is necessary, the processing device changing unit changing the processing device correlated with the logical storage area to different one of the processing devices if it is determined that the change is necessary.
A processing efficiency improving method of a storage system having a storage device that includes a storage medium providing a plurality of unit logical storage areas used as data storage areas of an external apparatus and a plurality of processing devices communicatively coupled to the storage device to execute data IO processes for the unit logical storage areas from the external apparatus, the method comprising:
- retaining in a responsible processing device retaining unit the unit logical storage areas and the processing devices executing the data IO processes of the unit logical storage areas in a correlated manner;
- retaining in a storage function retaining unit the unit logical storage areas and storage function information that is information set for the unit logical storage areas to indicate usage aspects of the unit logical storage areas in a correlated manner;
- acquiring the processing device correlated with each of the logical storage areas from the responsible processing device retaining unit based on the storage function set for the unit logical storage areas acquired from the storage function retaining unit for the unit logical storage areas;
- determining whether a change of the responsible processing device is necessary;
- and
- changing the processing device correlated with the logical storage area to different one of the processing devices if it is determined that the change is necessary.
Dependencies are inferred from the claim text.