摘要:
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.
摘要:
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 usage rates of processors 212 of the MPPKs 210 are acquired and compared with each other and if it is determined that the comparison result satisfies a predetermined condition, the process cost for the logical volumes 250 is calculated for each of the responsible MPPKs 210 to determine the destination MPPK 210 such that the costs of the MPPKs 210 are equalized.
摘要:
Among a plurality of microprocessors 12, 32, when the load on a microprocessor 12 which performs I/O task processing of received I/O requests is equal to or greater than a first load, the microprocessor assigns at least an I/O task portion of the I/O task processing to another microprocessor 12 or 32, and the other microprocessor 12 or 32 executes at least the I/O task portion. The I/O task portion is a task processing portion comprising cache control processing, comprising the securing in cache memory 20 of a cache area, which is one area in cache memory 20, for storage of data.
摘要:
A storage control system comprises a storage resource and a controller. If the controller receives a write command which specifies an address belonging to a virtual volume, to the area belonging to the address, unassigned pages in a pool which is a storage area based on a plurality of media types of physical storage media and which is divided into a plurality of pages are supposed to be assigned. The storage control system comprises a plurality of management entries which are a plurality of entries for page management information which is the information related to the pages. The plurality of management entries include two or more page entries and two or more statistical entries. A statistical entry about a certain media type corresponds to M pages based on the storage media of the certain media type (M is an integral number which is 2 or larger). The statistical entry corresponding to the M pages comprises the information related to the I/O performance value for those M pages.
摘要:
This storage system has an allocation unit for allocating a storage extent in prescribed units to the dynamic logical volume upon storing the data sent from the host computer in the dynamic logical volume; a management unit for managing the storage extent recognized as being currently used by the file system among the storage extents allocated to the dynamic logical volume by the allocation unit; and a release unit for releasing the storage extent that is not being managed by the management unit from the dynamic logical volume.
摘要:
Among a plurality of microprocessors 12, 32, when the load on a microprocessor 12 which performs I/O task processing of received I/O requests is equal to or greater than a first load, the microprocessor assigns at least an I/O task portion of the I/O task processing to another microprocessor 12 or 32, and the other microprocessor 12 or 32 executes at least the I/O task portion. The I/O task portion is a task processing portion comprising cache control processing, comprising the securing in cache memory 20 of a cache area, which is one area in cache memory 20, for storage of data.
摘要:
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.
摘要:
This storage system has an allocation unit for allocating a storage extent in prescribed units to the dynamic logical volume upon storing the data sent from the host computer in the dynamic logical volume; a management unit for managing the storage extent recognized as being currently used by the file system among the storage extents allocated to the dynamic logical volume by the allocation unit; and a release unit for releasing the storage extent that is not being managed by the management unit from the dynamic logical volume.
摘要:
In a storage system having a plurality of virtualization apparatuses that allocate a storage area which a storage device has, form a plurality of virtual volumes, and process input-output from a host processor to one of the virtual volumes, a request for completing all the input-output being processed that is received from the host processor and temporarily holding the input-output processing received subsequently is issued to the plurality of virtualization apparatuses, when a completion report of the processing of the input-output in response to the request is received from the plurality of virtualization apparatuses and the completion report is received from all the virtualization apparatuses to which the request was issued, an instruction of an allocation change of the storage area of the storage device is sent to all the virtualization apparatuses, and when the completion report of the allocation change is received from all the virtualization apparatuses, the storage area of the storage device is allocated to the virtual volume by sending an instruction for releasing a state of the input-output held temporarily to all the virtualization apparatuses.
摘要:
In a storage system having a plurality of virtualization apparatuses that allocate a storage area which a storage device has, form a plurality of virtual volumes, and process input-output from a host processor to one of the virtual volumes, a request for completing all the input-output being processed that is received from the host processor and temporarily holding the input-output processing received subsequently is issued to the plurality of virtualization apparatuses, when a completion report of the processing of the input-output in response to the request is received from the plurality of virtualization apparatuses and the completion report is received from all the virtualization apparatuses to which the request was issued, an instruction of an allocation change of the storage area of the storage device is sent to all the virtualization apparatuses, and when the completion report of the allocation change is received from all the virtualization apparatuses, the storage area of the storage device is allocated to the virtual volume by sending an instruction for releasing a state of the input-output held temporarily to all the virtualization apparatuses.