Information processing system and data processing method
AssigneeHitachi, Ltd.
InventorsMasanori Takata, Yohsuke Ishii, Tomonori Esaka, Atsushi Sutoh
Life of this patent
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Abstract
The file synchronization processing among sites which can reduce the response time is realized. By the CAS device creating a list of at least a part of the file groups which the first sub-computer system archived or backed up to the data center as an update list and transferring the update list to the second sub-computer system, the second sub-computer system determines whether the file is valid or not by using the update list (See FIG. 2).
Claims15
An information processing system comprising:
- a plurality of sub-computer systems including a first sub-computer system and a second sub-computer system;
- and
- a data management computer system connected to the plurality of sub-computer systems, wherein
- each of the plurality of sub-computer systems is a system adapted to provide, to a client computer, data stored in a storage sub-system,
- the data management computer system is a system adapted to manage data migrated from each of the plurality of sub-computer systems,
- the data management computer system manages backup data for the first sub-computer system, and transfers at least a portion of the backup data to at least the second sub-computer system which is distinct from the first sub-computer system,
- at least the second sub-computer system stores, in a storage sub-system within the second sub-computer system, the data transferred from the data management computer system, and generates a shared file system,
- the data management computer system acquires, when the data backed up from the first sub-computer system is updated, update management information for notification comprising update data information, and transfers the update management information for notification to the second sub-computer system, and,
- using the update management information for notification, the second sub-computer system determines, with respect to a remote site file which is a file of the first sub-computer system that the second sub-computer system already possesses, identity in relation to an updated file at the first sub-computer system corresponding to the remote site file.
A data processing method for an information processing system comprising a plurality of sub-computer systems including a first sub-computer system and a second sub-computer system, and a data management computer system connected to the plurality of sub-computer systems, wherein each of the plurality of sub-computer systems is a system adapted to provide, to a client computer, data stored in a storage sub-system, and the data management computer system is a system adapted to manage data migrated from each of the plurality of sub-computer systems, the data processing method comprising:
- a step in which the data management computer system manages backup data for the first sub-computer system, and transfers at least a portion of the backup data to at least the second sub-computer system which is distinct from the first sub-computer system;
- a step in which at least the second sub-computer system stores, in a storage sub-system within the second sub-computer system, the data transferred from the data management computer system, and generates a shared file system;
- a step in which the first sub-computer system updates data that is backed up in the data management computer system;
- a step in which the data management computer system acquires, when the data backed up from the first sub-computer system is updated, update management information for notification comprising update data information, and transfers the update management information for notification to the second sub-computer system;
- and
- a step in which, using the update management information for notification, the second sub-computer system determines, with respect to a remote site file which is a file of the first sub-computer system that the second sub-computer system already possesses, identity in relation to an updated file at the first sub-computer system corresponding to the remote site file.
Dependencies are inferred from the claim text.