摘要:
With the migration of a logical volume between virtualization apparatuses, there has been a need to change the setting of a host computer in order to access a migration destination logical volume. In a control method for a computer system including a host computer, one or more storage systems, and plural virtualization apparatuses, a first virtualization apparatus includes a first memory and manages a first logical volume to which the host computer issues an access request, and a second virtualization apparatus includes a second memory and manages a second logical volume to which the host computer issues an access request, wherein the control method associates a first real storage area on the storage system, which has been associated with the first logical volume, with the second logical volume, and stores, in the second memory, first identification information that uniquely identifies the first logical volume within the computer system.
摘要:
The object of the invention is to improve data access performance in a computer system. At least one logical volume is provided in a storage device 13 connected to a host computer via a network 17, and two different paths, a first path and a second path, which are unique to that logical volume, are assigned to the logical volume. The storage device 12 comprises: means for performing data access with respect to the logical volume identified by the first path, if a data access request from the host computer 12 has been received via the first path; and means for carrying out, if a data access request has been received from the host computer 12 via the second path, a prescribed processing before the received data access, and then performing data access with respect to the logical volume identified by the second path.
摘要:
A host I/F unit has a management table for managing an MPPK which is in-charge of the control of input/output processing for a storage area of an LDEV, and if a host computer transmits an input/output request for the LDEV, the host I/F unit transfers the input/output request to the MPPK which is in-charge of the input/output processing for the LDEV based on the management table, an MP of the MPPK performs the input/output processing based on the input/output request, and the MP of the MPPK also judges whether the MPPK that is in-charge of the input/output processing for the LDEV is to be changed, and sets the management table so that an MPPK which is different from the MPPK that is in-charge is to be in-charge of the input/output processing for the LDEV.
摘要:
A host I/F unit has a management table for managing an MPPK which is in-charge of the control of input/output processing for a storage area of an LDEV, and if a host computer transmits an input/output request for the LDEV, the host I/F unit transfers the input/output request to the MPPK which is in-charge of the input/output processing for the LDEV based on the management table, an MP of the MPPK performs the input/output processing based on the input/output request, and the MP of the MPPK also judges whether the MPPK that is in-charge of the input/output processing for the LDEV is to be changed, and sets the management table so that an MPPK which is different from the MPPK that is in-charge is to be in-charge of the input/output processing for the LDEV.
摘要:
The object of the invention is to improve data access performance in a computer system. At least one logical volume is provided in a storage device 13 connected to a host computer via a network 17, and two different paths, a first path and a second path, which are unique to that logical volume, are assigned to the logical volume. The storage device 12 comprises: means for performing data access with respect to the logical volume identified by the first path, if a data access request from the host computer 12 has been received via the first path; and means for carrying out, if a data access request has been received from the host computer 12 via the second path, a prescribed processing before the received data access, and then performing data access with respect to the logical volume identified by the second path.
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:
A host I/F unit has a management table for managing an MPPK which is in-charge of the control of input/output processing for a storage area of an LDEV, and if a host computer transmits an input/output request for the LDEV, the host I/F unit transfers the input/output request to the MPPK which is in-charge of the input/output processing for the LDEV based on the management table, an MP of the MPPK performs the input/output processing based on the input/output request, and the MP of the MPPK also judges whether the MPPK that is in-charge of the input/output processing for the LDEV is to be changed, and sets the management table so that an MPPK which is different from the MPPK that is in-charge is to be in-charge of the input/output processing for the LDEV.
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:
With the migration of a logical volume between virtualization apparatuses, there has been a need to change the setting of a host computer in order to access a migration destination logical volume. In a control method for a computer system including a host computer, one or more storage systems, and plural virtualization apparatuses, a first virtualization apparatus includes a first memory and manages a first logical volume to which the host computer issues an access request, and a second virtualization apparatus includes a second memory and manages a second logical volume to which the host computer issues an access request, wherein the control method associates a first real storage area on the storage system, which has been associated with the first logical volume, with the second logical volume, and stores, in the second memory, first identification information that uniquely identifies the first logical volume within the computer system.
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.