Computer system
Provided is a computer system capable of maintaining a storage capacity allocated to a journal volume within an appropriate range during an application period of remote copy. A first storage system includes a primary volume and a primary journal volume, and a second storage system includes a secondary volume and a secondary journal volume. A management computer is configured to manage the remote copy in which a primary volume, a primary journal volume, a secondary journal volume, and a secondary volume are paired, and expand and/or release a capacity of the primary journal volume and/or the secondary journal volume according to operation information of a resource related to the remote copy.
1. A computer system comprising:
a first storage system constituting a primary site;
a second storage system constituting a secondary site; and
a management computer, wherein
the first storage system includes a primary volume and a primary journal volume,
the second storage system includes a secondary volume and a secondary journal volume,
the management computer is configured to:
manage remote copy in which the primary volume, the primary journal volume, the secondary journal volume, and the secondary volume are paired;
expand or release a capacity of the primary journal volume and/or the secondary journal volume according to operation information of a resource related to the remote copy;
obtain a load tendency for each operation information of a plurality of resources related to the remote copy; and
set a pattern for expanding or releasing the capacity for each combination of the plurality of tendencies.
2. The computer system according to claim 1 , wherein
the management computer is configured to:
determine, according to the operation information of the resource, an increasing tendency or a decreasing tendency of a usage rate for each of the primary journal volume and the secondary journal volume;
expand the capacity according to the determination of the increasing tendency; and
release the capacity according to the determination of the decreasing tendency.
3. The computer system according to claim 1 , wherein
the operation information of the resource includes a load of the primary journal volume, a load of the primary storage system, a load of the secondary storage system, and a load of a network between the primary journal volume and the secondary journal volume.
4. The computer system according to claim 1 , wherein
the management computer is configured to:
obtain a tendency value of the operation information based on a history of the operation information; and
obtain the load tendency by comparing a current value with the tendency value of the operation information.
5. The computer system according to claim 4 , wherein
the management computer is configured to:
compare the current value of the operation information with the tendency value of the operation information; and
execute expansion or release of the capacity based on a comparison result.
6. The computer system according to claim 1 , wherein
the management computer is configured to:
when an increasing tendency of a usage rate is determined, execute expansion of the capacity when a usage rate of a journal volume is equal to or higher than a threshold value.
7. The computer system according to claim 6 , wherein
the management computer is configured to:
execute expansion of a capacity of the journal volume when the capacity is equal to or less than a predetermined value.
8. The computer system according to claim 1 , wherein
the management computer is configured to:
allocate a predetermined storage capacity to each of the primary journal volume and the secondary journal during initial design of the remote copy; and
after the remote copy is started, execute the allocation of the capacity to the primary journal volume and/or the secondary journal volume according to an application state of the remote copy.
9. A computer system comprising:
a first storage system constituting a primary site;
a second storage system constituting a secondary site; and
a management computer, wherein
the first storage system includes a primary volume and a primary journal volume,
the second storage system includes a secondary volume and a secondary journal volume,
the management computer is configured to:
manage remote copy in which the primary volume, the primary journal volume, the secondary journal volume, and the secondary volume are paired;
expand or release a capacity of the primary journal volume and/or the secondary journal volume according to operation information of a resource related to the remote copy; and
when there is an operation of changing a configuration of the secondary volume, neither expansion nor release of the capacity is executed on the primary journal volume and/or the secondary journal volume.
10. A computer system comprising:
a first storage system constituting a primary site;
a second storage system constituting a secondary site; and
a management computer, wherein
the first storage system includes a primary volume and a primary journal volume,
the second storage system includes a secondary volume and a secondary journal volume,
the management computer is configured to:
manage remote copy in which the primary volume, the primary journal volume, the secondary journal volume, and the secondary volume are paired;
expand or release a capacity of the primary journal volume and/or the secondary journal volume according to operation information of a resource related to the remote copy; and
when there is a failure in a network between the primary volume and the secondary volume, neither expansion nor release of the capacity is executed on the primary journal volume and/or the secondary journal volume.