Fujitsu Corporation

Nec Platforms, Ltd.

Yuji Imai

Soichi Shigeta

Hidenobu Ito

Satoshi Tsuchiya

Shunsuke Kikuchi

Yutaka Ezaki

Masahiro Komura

Masanobu Yuhara

Tsuneo Katsuyama

Mitsuhiro Kishimoto

Teruo Nakamura

A first server and a second server use a virtual address to mount the storage synchronous area in a storage by the NFS. The first server obtains a snapshot of memory content of a virtual system operated as an active system and transmits the snapshot to the second server. The first server replicates content of the storage synchronous area in the storage to a storage synchronous area in a storage. When a failure occurs in the first server, the second server sets a virtual address to the storage and uses the virtual address to mount the storage synchronous area in the storage by NFS. The second server uses the snapshot received from the first server to execute the application on the virtual system.

Fault tolerant system, server, and operation method of fault tolerant system

A communication method includes determining a difference state of identification numbers of communication providers corresponding to a plurality of relay transfer apparatuses on a passing outward path to an opposing communication apparatus and on a passing return path from the opposing apparatus; and switching a first virtual communication channel set between intranets and a second virtual communication channel set between the intranets to dynamically substitute and use a first communication mode of transmitting and receiving encrypted communication data to and from the opposing apparatus through the first virtual communication channel and a second communication mode of transmitting and receiving plain text communication data to and from the opposing apparatus through the second virtual communication channel, according to the determination of the difference state of the identification numbers of the providers.

Communication method, communication apparatus and non-transitory readable medium

A management serverincludes a vSW usage management tablefor storing an index for identifying an interface for each customer intranet, where the interface is used to connect a VMand a PCin the customer intranetconnected via a routerand is being used. When the management serveris compatible with an IPv4 network and when receiving a connection request for a connection to the routerconnected to the customer intranet, the management server specifies an identifier for identifying an interface that is not stored in the vSW usage management table, connects the routerand the VMby using the interface indicated by the specified identifier.

Management server, virtual machine system, computer-readable recording medium, and connection method

An apparatus stores, in association with each of one or more services to be provided, a communication monitoring rule under which communication performed for providing the each of the one or more services is to be monitored. The apparatus communicates with another apparatus that is operable to run a virtual machine and run a virtual router relaying communication performed by the virtual machine. When a service to be provided by the virtual machine is selected from among the one or more services, the apparatus controls the virtual router to monitor communication performed by the virtual machine according to the communication monitoring rule associated with the selected service, by sending the communication monitoring rule to the virtual router.

Apparatus and method for monitoring communication performed by a virtual machine

A virtual system control apparatus includes: a configuration information storage device to store configuration information for an operational system of a virtual system; a first virtual machine image storage device to store first virtual machine images for the operational system of the virtual system; a configuration change information storage device to store configuration change information that represents configuration information concerning difference between the operational system of the virtual system and plural types of test systems; a second virtual machine image storage device to store second virtual machine images for a virtual machine relating to the difference; and a controller. By adopting such data configuration of the operational system and the test system, it becomes possible to switch easily and smoothly between the operational system and the test system.

Virtual system control method and apparatus

A device control service providing system includes a service request receiving unit that receives, via a network, a device control service request for controlling a group of electronic devices, and a process execution requesting unit that requests respective device control servers to execute device control processes for controlling an operation of the electronic devices in the group based on the request received, where one of the device control servers executes the device control processes corresponding to one group of the electronic devices.

System and method to provide device control service, and computer product

An apparatus for evaluating a change of an existing system to a modified system by using a test system including a subsystem having the same configuration with either of the existing subsystem and the modified system includes: a memory for storing configuration information of the test system and test information; and a processor for executing a process including: activating the test system to execute test on the subsystem, collecting test information from the test system, and storing the test result information while the subsystem has the same configuration as the existing system; confirming the test system has been modified; and activating the test system to execute test on the subsystem, collecting test result information from the test system, and storing the test result information while the subsystem has the same configuration as the modified system.

System evaluation apparatus

An internet-protocol address assignment control apparatus obtains, via an interface provided in a first communication device, a first unique number for a first interface provided in a server apparatus connected to the interface provided in the first communication device and a second unique number for a second interface provided in the server apparatus connected to an interface provided in a second communication device. The apparatus stores, in a storage, the obtained second unique number for the second interface provided in the server apparatus on a basis of the first unique number for the first interface provided in the server apparatus.

Recording medium that stores internet-protocol (IP) address assignment control program, IP address assignment control apparatus, and IP address assignment control method

A computer-readable recording medium recording a security management program which enables nodes for executing jobs to omit virus check while maintaining the security of a system. When a job execution request including a program is input, a sender decision unit compares the identification of the job sender with reliable device information, to determine whether or not the program has been transmitted from a reliable device. Subsequently, a job manager outputs a start request specifying the program. If the program is judged to have been transmitted from a device other than the reliable devices, a safety decision unit outputs a virus check request, whereupon a virus checker executes code check on the program.

Computer-readable recording medium recording a security management program, computer-readable recording medium recording a job submission management program, and security management method

A security management program coping with a security hole found in a library. When a request for executing jobs, including a job program, is input, a service library-determining section analyzes the job program and determines link libraries called by the job program. Then, a job submission section transmits the job program to submission destination nodes, and instructs the submission destination nodes to execute the jobs according to the request. After that, when identification information for identifying a vulnerable library having a security defect is input, a submission destination-determining section obtains identification information for identifying the job program corresponding to the vulnerable library, and identification information for identifying the submission destination nodes corresponding to the job program. Subsequently, a forcible job stop section instructs the submission destination nodes to stop processes for executing the job program.

Computer-readable recording medium storing security management program, security management system, and method of security management

A multicast distribution system of packet comprises routers connected with each other by a cable. Nodes are connected to each of the routers. The routers or the nodes is provided with a unit for relaying a packet having a list of the plurality of destination addresses and its undistributed bit map to the packet header to be transferred, according to the unicast route.

Multicast distribution system of packets

A management server managing a fixed address of a mobile terminal, at least two dynamic addresses dynamically allotted to the mobile terminal when it exists in two service areas at one time. A host transmits a packet with the fixed address of the mobile terminal used as a header. If the mobile terminal exist in at least the two service areas (apart from other areas), it notifies a management server of the dynamic addresses of the two service areas in real time. If the packet is transmitted from the host and the two dynamic addresses are allotted to the mobile terminal, the management server transfers a packet with these two dynamic addresses used as a header.

Method and system for mobile communication, and a computer product

A computer having a remote procedure call (RPC) mechanism or an object request broker (ORB) mechanism in a distributed computing environment, is constructed comprising a physical memory, a data readout unit for reading out data stored in the physical memory, and a remote direct memory access (RDMA) unit for transferring the data read out by the data readout unit, directly to a physical memory included in a communicating opposite computer which is connected to the particular computer itself through a network, thereby to shorten a delay which is expended on the data transfer between the computers.

Computer having a remote procedure call mechanism or an object request broker mechanism, and data transfer method for the same

A control method and apparatus for distributing packets to nodes in a cluster, while realizing a single system image at the network address level and such as to be able to simply and dynamically change the distribution destination, conditions of distribution, and the like. A pattern matching unit in a relay device receives packets coming from a packet receiving device. The packets have an address which represents a cluster. Using a distribution control table, pattern matching is performed based on the transmission origin address, transmission origin port, destination port and the like of this packet. A hash calculation unit, from the matching result, performs a hash calculation obtaining the argument of a hash function. A destination node extraction unit sets the destination node of the packet based on the hash result, using the distribution control table.

Packet relay control method packet relay device and program memory medium

When a client sends an RPC request that requests a server for a service, the client adds identification information to the RPC request. When an active server receives an RPC request, it stores the identification information thereof in a stable area that is not destroyed even if a defect takes place in the client or the server, and executes the requested service. When a defect takes place in the active server, the backup server takes over the process of the active server. A PALIB of the backup server compares the identification information of the RPC request re-sent from the client with the identification information in the stable area. When they match, the PALIB determines that the RPC request is redundant. The backup server performs a redundant process and sends back the correct result to the client.

Growing community of inventors

Kawasaki, Japan

Yuji Imai