Abstract: When a failure occurs in an LPAR on a physical computer under an SAN environment, a destination LPAR is set in another physical computer to enable migrating of the LPAR and setting change of a security function on the RAID apparatus side is not necessary. When a failure occurs in an LPAR generated on a physical computer under an SAN environment, configuration information including a unique ID (WWN) of the LPAR where the failure occurs is read, a destination LPAR is generated on another physical computer, and the read configuration information of the LPAR is set to the destination LPAR, thereby enabling migrating of the LPAR when the failure occurs, under the control of a management server.

Abstract: Disclosed is a multicast network system including a multicast network which provides a plurality of relay nodes, and a monitoring server and a plurality of acknowledgment agents connected to the multicast network. The monitoring server includes an acknowledgment request message generating and sending unit that generates and sends an acknowledgment request message storing an acknowledgment probability to the plurality of acknowledgment agents; a collecting unit that collects acknowledgment messages from acknowledgment agents; and a collection number comparing unit that compares the number of acknowledgment messages collected by the acknowledgment message collecting unit with the expected number of acknowledgment messages obtained from the acknowledgment probability and the total number of acknowledgment agents.

Abstract: When a failure occurs in an LPAR on a physical computer under an SAN environment, a destination LPAR is set in another physical computer to enable migrating of the LPAR and setting change of a security function on the RAID apparatus side is not necessary. When a failure occurs in an LPAR generated on a physical computer under an SAN environment, configuration information including a unique ID (WWN) of the LPAR where the failure occurs is read, a destination LPAR is generated on another physical computer, and the read configuration information of the LPAR is set to the destination LPAR, thereby enabling migrating of the LPAR when the failure occurs, under the control of a management server.

Abstract: A method of realizing uniqueness assurance includes: selecting a server to which a first message is to be transferred from multiple servers and transferring the first message to the selected server when the first message is received from a terminal apparatus by a load sharing apparatus; storing a second message that should be transferred to the same server as that of the first server when the second message is received from the terminal apparatus by the load sharing apparatus after the first message is transferred; generating uniqueness assurance information corresponding to the communication protocols corresponding to a session generated by the server to which the first message is transferred, the uniqueness assurance information indicating the correspondence between the session and the message corresponding to the session; and transferring the second message in accordance with the generated uniqueness assurance information if the stored second message exits.

Abstract: One system distributes a request for providing a service using a first communication protocol, from a terminal device to a server selected from among a plurality of servers by a server load balancer in response to the request. A corresponding relation between identification information for identifying a session generated in a distributed server and the server that has generated the session corresponding to the identification information is set in the server load balancer by the service of a second communication protocol as uniqueness assurance information for uniqueness assurance. Thus, when the provision of a service is requested using a second communication protocol by the terminal device, the server load balancer refers to the set uniqueness assurance information and selects the server for providing the service from among the plurality of servers.

Abstract: In investigating the cause of a fault in a computer storage system, it is considered useful to previously prepare maintenance logical units (LUs) of a simple structure, the operation of which has been confirmed. If the same number of LUs as servers are prepared for each server as in the prior art, the efficiency is low. Furthermore, securing these LUs complicates assignment of the LUs for construction of a system and a work for addressing the fault. The present invention provides a computer system free of these problems. The computer system has a first computer for executing a first OS (operating system), a second computer for executing a second OS, and a storage array system. The storage array system uses a disk device having a logical unit (LU) for storing a boot loader, as well as the first and second OSes. The boot loader is executed on any one of the two computers, reads in any of the OSes corresponding to the currently operating computer into this operating computer, and executes the read OS.

Abstract: An endoscope system includes a light source for supplying three narrow wavelength bands including one wavelength band for exciting fluorescence, an excitation light cut filter for transmitting light having a wavelength greater than either 470 nm or 490 nm, and an image capturing unit for capturing the light transmitted by the excitation light cut filter and outputting three wavelength band signals corresponding to the three narrow wavelength bands of the light source. Also included are first, second and third frame memories for inputting and storing the three wavelength band signals, respectively, and first, second and third output ends for outputting first, second and third color signals, respectively, to a monitor for displaying an image. An image processor receives signals from the first, second and third frame memories respectively and selects among the first output end, the second output end and third output end for outputting the received signals to the monitor.

Abstract: In a control method of a virtual machine system, when a virtual machine operating in a physical machine is transferred to another physical machine, a management server stops the virtual machine of transfer source and defines a virtual machine of transfer destination in the other physical machine. A virtual network address and a virtual storage interface address of the virtual machine of transfer source is exchanged with a virtual network address and a virtual storage interface address defined in the virtual machine of transfer destination in the state that the virtual machine is prevented from being activated and then prevention of activation of the virtual machine of transfer destination is canceled, so that transfer processing can be made safely by simple procedure.

Abstract: A statistical value update unit calculates the fluctuation of measurement data. A filtering processing unit extracts a normal white noise component from the fluctuation of the measurement data using an adaptive lattice filter. A statistical test unit determines whether or not the variance of the normal white noise component is out of a predetermined scope in reference distribution. A change decision unit detects a stationary change of the status of a target system based on a detection ratio of an outlier.

Abstract: Provided are a disc guide mechanism 41 that is disposed on one end side of a slot 10A in a drive unit body 10 and guides an optical disc 1; and a disc diameter detecting mechanism 42 that is disposed on the other side of the slot 10A in the drive unit body 10 and retracts the disc guide mechanism 41 when the optical disc 1 inserted in the slot 10A is large and advances the optical disc 1 when the optical disc 1 is small. The disc guide mechanism 41 and the disc diameter detecting mechanism 42 which are respectively disposed on sides of the slot 10A can center the optical disc 1 in accordance with a diameter of the optical disc 1.

Abstract: An event controller is caused to function as a receiving unit, a request unit, and a transfer unit. The receiving unit receives an event notification request containing designation information designating a client. The request unit requests notification of one of a plurality of servers as an assignment destination server, based on the designation information, the one providing a service to the client identified by the designation information. The transfer unit transfers the event notification request to the assignment destination server notified in response to the request by the request unit.

Abstract: A spanning tree creation unit creates a plurality of spanning trees based on the network topology, and registers the spanning trees to a spanning tree information table. A spanning tree selection unit selects a spanning tree wherein communication resources will be used most effectively, out of the plurality of spanning trees registered to the spanning tree information table. A node setup unit sets the mapping information which expresses correspondence between the requested virtual LAN and the selected spanning tree in each node.

Abstract: A network fault diagnostic device is configured in the following manner. A causal relation table stores causal relations between faults and events, and a monitor event selector refers to the causal relation table to extract a minimum event required for identifying a fault, and sets the event as a monitor event. The acquisition-event selector selects events from the causal relation table based on latest fault candidates, and sets priorities of the events selected, in the order of efficiently identifying faults. The event acquiring unit requests events in the order of the priorities set, and the event receiving unit receives each event in response to the respective requests. The fault determining unit narrows down the candidates of the fault based on the events received one by one.

Abstract: A relationship between first configuration information concerning a configuration of a first network layer and second configuration information concerning a configuration of a second network layer is managed. If there is a change in the configuration, the first configuration information and the second configuration information is automatically updated. For example, when the configuration of the first network layer is changed, the second network layer is instructed to change the configuration of the second network layer.

Abstract: A switch (50) is adapted to be On when a contact point (52) is at a position to be in contact with a cam surface (47) and Off when the contact point (52) is at a position corresponding to a non-cam surface (48). In the vicinity of the non-cam surface (48) of the cam surface (47), a rib (49) is provided which changes a direction of the contact point (52) when reciprocation of the cam member (43) is changed. Accordingly, even when the switch (50) comes into contact with the cam member (43) moving in a different direction, the direction of the contact point (52) is changed so as to be the same. Hence, the switch (50) is prevented from being affected by a hysteresis caused by difference in directions of the contact point (52).

Abstract: In investigating the cause of a fault in a computer storage system, it is considered useful to previously prepare maintenance logical units (LUs) of a simple structure, the operation of which has been confirmed. If the same number of LUs as servers are prepared for each server as in the prior art, the efficiency is low. Furthermore, securing these LUs complicates assignment of the LUs for construction of a system and a work for addressing the fault. The present invention provides a computer system free of these problems. The computer system has a first computer for executing a first OS (operating system), a second computer for executing a second OS, and a storage array system. The storage array system uses a disk device having a logical unit (LU) for storing a boot loader, as well as the first and second OSes. The boot loader is executed on any one of the two computers, reads in any of the OSes corresponding to the currently operating computer into this operating computer, and executes the read OS.

Abstract: When a failure occurs in an LPAR on a physical computer under an SAN environment, a destination LPAR is set in another physical computer to enable migrating of the LPAR and setting change of a security function on the RAID apparatus side is not necessary. When a failure occurs in an LPAR generated on a physical computer under an SAN environment, configuration information including a unique ID (WWN) of the LPAR where the failure occurs is read, a destination LPAR is generated on another physical computer, and the read configuration information of the LPAR is set to the destination LPAR, thereby enabling migrating of the LPAR when the failure occurs, under the control of a management server.

Abstract: A virtual machine system in which a physical CPU busy ratio can be measured in consideration of the status of an assignment of the physical CPU, and the measured CPU busy ratio can be reflected to a CPU busy ratio of each guest OS. An elapsed time counter is provided in a hypervisor, and a hypervisor access interface is provided in each of LPARs and used to read the elapsed time counter from the guest OS. A performance monitor program running on each guest OS calculates, based on a value of the elapsed time counter, the number of sampling timings expected to occur during the time when the physical CPU is not assigned to the LPAR in which the performance monitor program is provided.

Abstract: In a communication network managing system, at a network manager, a management section manages QoS (Quality of Service) capability management information from element managers, a request reception section receives a request for a target QoS capability, and a section and notification section selects a candidate subnetwork such as to satisfy the target QoS capability for which the request has been received by the request reception section, and notifies the corresponding element managers of information about the selection. At the individual element manager, based on the selection information from the selection and notification section of the network manager, a control section controls the corresponding subnetwork.

Abstract: A disc ejecting mechanism 43 that ejects an optical disc 1 disposed on a turntable 23 to a slot 10A is provided with a first disc feeding mechanism 61 disposed on a rear side in a drive unit body 10 and a second disc feeding mechanism (a disc guide mechanism 41) that is disposed on a slot 10A side relative to the first disc feeding mechanism 61 and continuously feeding the optical disc 1 fed by the first disc feeding mechanism 61 in a direction toward the slot 10A. The optical disc 1 having a small diameter can be transferred from the turntable 23 to the slot 10A by the first disc feeding mechanism 61 and the second disc feeding mechanism which are respectively disposed on the rear side and a front side of the slot 10A, thereby ejecting the optical disc 1 to the outside.