Fujitsu Corporation

Hideki Sakurai

Yasuo Noguchi

Masahisa Tamura

Yoshihiro Tsuchiya

Tetsutaro Maruyama

Masanori Kimura

Kei Ohishi

Kazuki Shimojima

Kazuhiko Migita

Eiichi Nagahama

Koyo Miyagi

A system-replication control apparatus includes a processor that executes a process. The process includes: monitoring a use state of a resource in each of data centers; storing facility information indicating resources respectively held by the data centers and a use cost of the resources, and replication condition applied when each system is replicated in a resource of another data center; and selecting a resource composition that satisfies the replication condition and that costs lower than a currently-selected resource, as a replication destination of the system, from among available resources by referring to the use state of the resource obtained at the monitoring and the facility information.

System-replication control apparatus and system-replication control method

An information processing device is provided that provides service by executing a service provider program in a cluster system. The device includes a program information transmission unit that transmits to a monitoring node that monitors the cluster system, a node list information reception unit that receives node list information, an update target selection unit that determines which of the other information processing devices which are not yet updated with the service provider program by referring to the program information in the node list information, a command timing determination unit that determines a time after a lapse of the standby time found in the first update timing information as a command timing of the update command, an update timing information generation unit that generates second update timing information and an update command transmission unit that transmits the update command about the service provider program and the second update timing information.

Computer-readable recording medium storing software update command program, software update command method, and information processing device

A number-of-slices collector collects number-of-slices information indicating the number of free slices, which are not assigned to a storage areas of a logical disk, from each of a plural disk nodes, divides the storage area of the corresponding storage device in units of slice, and stores an assignment relation of the slices with respect to the storage areas of the logical disk. A disk node selector selects a source disk node from among the disk nodes having the free slices, and requests a slice identifier to identify the free slice for the selected source disk node. The source disk node serves as a source providing the slice to be assigned. A slice assigner receives the slice identifier from the source disk node, and determines an assignment relation of the free slice, which is denoted by the received slice identifier, with respect to the storage areas of the logical disk.

Recording medium storing control program for decentralized data, storage management program, control node, and disk node

A computer executes a data allocation control program to control allocation of data in a plurality of disk nodes. A redundancy restoration module executes a redundancy restoration procedure by commanding disk nodes to create a new copy of redundancy-lost data. An error message reception module receives a write error message indicating a write error in a storage device during the redundancy restoration procedure and records an identifier of the faulty storage device in an error record memory. A copy command module identifies accessed data in the faulty storage device and commands a relevant disk node to create a copy of the identified data in the faulty storage device in the case where there is no redundant copy of the data.

Computer program, method, and apparatus for controlling data allocation

A software update management apparatus includes a migration pattern table generation unit for reading a pre-migration environment table and a post-migration environment table and judging a migration content between before and after the update, for each function of a target disk node, and for reading a migration pattern determination table and determining a migration pattern to be applied to the target disk node based on the migration content and the migration pattern determination table. The software update management apparatus also has an update unit for reading the post-migration environment table, issuing an instruction to the target disk node according to the migration pattern determined by the migration pattern table generation unit, and updating software which executes each function of the target disk node.

Software update management apparatus and software update management method

A restore management apparatus comprising a restore performing unit which performs restoration of a data and stores the data in a restore disk which is distinct from a backed up disk, a management unit that manages progress of the restoration performed by the restore performing unit, and an access controlling unit that references the progress of the restoration managed by the management unit, makes the restore performing unit preferentially perform the restoration of data that includes a region where the restoration is not completed in response to a data access request to the region, and accesses the region of the restore disk after the restoration is completed.

Method and apparatus for restore management

A logical volume management apparatus includes a first storage unit that stores configuration information on a first stage logical volume, and a second storage unit that stores configuration information on a second stage logical volume. An access unit finds a storage area in the second stage logical volume that corresponds to the first stage logical volume, and accesses a storage area in a storage device that corresponds to the determined storage area. A logical volume generation unit generates a new second stage logical volume, and a storage area extension unit extends a storage area of the first stage logical volume stored in the configuration information on the first stage logical volume to a desired storage capacity, and makes the new second stage logical volume generated by the logical volume generation unit correspond to the first stage logical volume.

Apparatus and method for managing logical volume in distributed storage systems

A management node for managing a program update time refers to an update management table in which a plurality of managed nodes are classified into a plurality of groups and the sequence of program updating of the groups is defined. The management node sequentially selects the groups in accordance with the sequence of program updating in such a manner that after program updating processing has been completed in all managed nodes included in the selected group, the next group is selected. The management node refers to the update management table, transmits a program update request to each of the managed nodes included in the selected group, receives an update completion notification from the managed node, and notifies update management information storing means that the update processing has been completed in the managed node.

Update management method and update management unit

In a system that dynamically assigns software to a plurality of servers to perform customer services, an index to which there have been integrated the newness of a customer's software and the security level of the software is calculated, and whether the calculated index satisfies restricting conditions is checked. If the calculated index does not satisfy the restricting conditions, revision information is applied to the software.

Growing community of inventors

Kawasaki, Japan

Hideki Sakurai