摘要:
A backup control apparatus which references duplication management information which includes first stored location information indicating the stored location of first information resource and second stored location information indicating the stored location of a second information resource which duplicates the first information resource, and identifies, from among a plurality of information resources belonging to a backup region. The first information resource stored in the location indicated by the first stored location information, and a second information resource stored in the location indicated by the second stored location information corresponding to the first stored location information. The backup control apparatus replaces the identified second information resource with linked information indicating a link to the identified first information resource, and backs up the backup region in which the second information resource is replaced with the linked information.
摘要:
In a computer system according to an embodiment of the present invention, a first slave server includes copy management information associating a master file system identifier with an identifier of a slave server including a copy of the master file system identified by the master file system identifier. The first slave server acquires a copy of a part of a master file system. The copy includes a stub-state object (file or directory). The first slave server searches the copy management information for a slave server to be queried regarding information for materializing the stub-state object. If the slave server to be queried includes the information for materialization, the first slave server materializes the stub-state object using the information for materialization acquired from the queried slave server.
摘要:
A storage system 103 carries out first and second de-duplication processes in response to receiving a write request from a client. First, a determination is made as to whether a write target data item overlaps with any of the stored data items of a part of a stored data item group, which is a user data item group stored in a storage device 209, and if so, the write target data item is prevented from being stored in the storage device. Second, a determination is made as to whether a target stored data item, which is not finished being evaluated as to whether it overlaps with the stored data item in the first de-duplication process, overlaps with another stored data item, and if so, the target stored data item or the same data item overlapping with the target stored data item is deleted from the storage device 209.
摘要:
A file server stores the storage management information and migration policy information. The storage management information includes the information that indicates a storage attribute for each storage apparatus. The migration policy information includes a plurality of information sets. Each of the information sets includes the information that indicates a condition of a file attribute and the information that indicates a condition of a storage attribute of a storage apparatus that is a migration destination. The file server specifies a migration target file, specifies a storage apparatus that conforms to the storage attribute condition that is indicated by the information set that includes the information that indicates a condition of a file attribute that conforms to of a file attribute of a target file based on the storage management information, and migrates a target file from a storage apparatus that has stored the target file to the storage apparatus that has been specified.
摘要:
In a system in which multiple independent search servers are loosely coupled, a duplicate entry is detected and eliminated from search results sent from the respective search servers with respect to the same search condition. An integrated search control part of the search server, upon receiving an integrated search request, determines a hash algorithm to be used in common by the respective search servers. Each search control part responds to the integrated search control part by adding a hash value, based on this hash algorithm, to the search result. The integrated search control part detects and eliminates a duplicate entry on the basis of the hash value.
摘要:
There is provided a computer system comprising: a storage system for storing data; and a management server coupled to the storage system. The storage system comprises a first interface, a first processor and a first memory. The management server comprises a second interface, a second processor and a second memory. In the case of which a first storage system stops receiving a process request, the management server selects a second storage system which receives a process request directed to the first storage system in place of the first storage system to be stopped. The second storage system instructs the first storage system to change an identifier of the first storage system, and receives a process request directed to the first storage system by assigning the identifier of the first storage system before the change to the second storage system.
摘要:
The present invention provides a log management system which is devised so that improper behavior by managers with regard to the log information can easily be discovered. Virtual OS are respectively installed for respective users in a file server that can also be constructed as an NAS device. These virtual OS function as virtual NAS. The virtual OS and manager OS can exchange information relating to log information via an information exchange part constructed as a kernel. The log information produced in the virtual OS is transmitted to a first log management device via a first communications network, and is also transmitted to a second log management device via a second communications network. The respective networks are separated. As a result of the same log information being managed by multiplex management using separate management devices, it can be detected whether or not there has been any improper behavior with respect to the log information.
摘要:
When a file server is to create data that does not permit falsification in an external storage, it is not possible to guarantee that the rewriting of this data can be prevented from a computer connected to the external storage without going through a file server. Provided is a storage system configured from a first storage having a file I/O processing unit and a second storage connected to this first storage, wherein the first storage includes a unit for requesting a change of access authority to the storage area in the own storage and in the second storage provided to the own storage. An access request to a storage area in a second storage from a computer connected to a second storage without going through a file I/O processing unit is restricted based on the change of access authority executed by the second storage upon receiving the request from the first storage.
摘要:
A progress status management system comprises a management target system configured to execute a series of processes to the file, which includes a plurality of process units configured to execute a process to a file, and a progress status management unit configured to manage a progress status of a process executed by the process unit included at the management target system. The progress status management unit, in a case of acquiring the first identification information of a file in a first process unit, acquires the first identification information of the file in the second process unit, and links the acquired first identification information in the first process unit and the acquired first identification information in the second process unit to the same second identification information.
摘要:
A file server performs duplicate elimination on files, and creates a virtual file system that does not include a duplicate file and is used for creating a search index. A search server acquires search target files from the virtual file system in the file server, and creates the search index.