Abstract: The disclosed embodiments relate to a system and method for compensating for a satellite gateway failure. There is provided a system comprising a first satellite gateway, and a second satellite gateway (14) coupled to the first satellite gateway and configured to automatically redistribute transponders assigned to the first satellite gateway to create a new transponder allocation if the first satellite gateway fails.

Abstract: A remote management module receives a command from a support server in response to the remote management module initiating a first secure, authenticated connection with the support server, wherein the remote management module is integrated with, and monitors a condition of, a processing system. The remote management module executes the command to generate a result that provides diagnostic data about the processing system. The remote management module reports the result to the support server upon the remote management module initiating a second secure, authenticated connection with the support server.

Abstract: Various embodiments for automated error recovery in a computing storage environment by a processor device are provided. In one embodiment, if a failure is caused by an operation of a hardware management console (HMC) and a malfunction of a current network connection, a cleanup operation is performed on at least a portion of a current HMC configuration, an alternative network connection to the current network connection is made, and a retry operation is performed.

Abstract: A method and apparatus for detecting split brain in a distributed system is provided. After determining that a rogue instance is no longer an active member of the cluster, a recovery instance detects activity associated with a redo log that is updated by the rogue instance to store log records that describe changes made by the rogue instance to data associated with the cluster.

Abstract: A recovery method for ring-based network comprises following steps: when an error occurs at first node, second and third nodes adjacent to the first node transmit a link-down packet respectively; after the first node is repaired, the first, second and third nodes transmit a link-up packet respectively, and each link-up packet includes a priority value of the first, second or third node; the priority values of the first, second and third nodes are compared with each link-up packet to enter the ring port of the first node, the second node or the third node into a forward status or a blocked status; and a forward link or a blocked link is formed among the ring ports of the first, second and third nodes.

Abstract: Systems and methods of providing high availability of telecommunications systems and devices in a telecommunications network. A telecommunications device is deployed in a high availability configuration that includes two or more peer device platforms, in which each peer device platform can operate in either an active mode or a standby mode. Each peer device platform includes a device health monitoring component and a rules engine. By detecting one or more failures and/or faults associated with the peer device platforms using the respective device health monitoring components, and generating, using the rules engine, a health count for each peer device platform based on the detected failures/faults and one or more predetermined rules, failover decisions can be made based on a comparison of the health counts for the respective peer device platforms, while reducing the impact on the telecommunications network and providing an increased level of user control over the failover decisions.

Abstract: Method and apparatus for providing failover operation for a connection between a first PCIE bridge and a first input/output (IO) device are provided. A first set of bussed bits is exchanged between the first PCIE bridge and the first IO device over a first link using a first set of lanes of the first PCIE bridge. In response to detecting a failure in the first link, at a PCIE bridge end, the first set of lanes is swapped with a second set of lanes of the first PCIE bridge for exchanging a second set of bussed bits between the first PCIE bridge and the first IO device over a second link using the second set of lanes, the second link connecting a second PCIE bridge with a second IO device. In response to detecting the failure in the first link, at an IO device end, the first set of lanes is switched with the second set of lanes for exchanging the second set of bussed bits between the first PCIE bridge and the first IO device over the second link using the second set of lanes.

Abstract: Described is a technology by which a remote network (or local) service is monitored for failure, e.g., by determining whether data corresponding to operation of the service achieves a threshold. When a threshold is achieved that indicates that the service has failed, the service is automatically deactivated for use with a local workload, and the workload switched to use a second service or system having functionality similar to that of the failed service. The second service may be monitored for failure, as may the failed service to determine when it is again operational. In this manner, a remote primary service may have another local or remote secondary service/system automatically substituted for it when it fails, and be restored for use when it returns to acceptable operation.

Abstract: A method includes establishing an expected traffic load for a plurality of servers, wherein each server has a respective actual capacity. The method further includes limiting the actual capacity of each server to respective available capacities, wherein a combined available capacity that is based on the available capacities corresponds to the expected traffic load. The method also includes dynamically altering the respective available capacity of the servers based on the failure of at least one server.

Abstract: Approaches for recovering nodes and adding new nodes to object stores maintained on one or more solid state devices. At a surviving node, in a cluster of nodes, replicating, to a recovering node in the cluster of nodes, all requests to modify data stored in a first data store thereon that are received by the surviving node. The surviving node performing a bulk copy operation to copy data, stored in the first data store, to a second data store maintained on the recovering node. The surviving node (a) replicates all requests to modify data received by the surviving node and (b) performs a bulk copy operation in parallel.

Abstract: A method for managing multiple nodes hosting multiple memory segments, including: identifying a failure of a first node hosting a first memory segment storing a hypervisor; identifying a second memory segment storing a shadow of the hypervisor and hosted by a second node; intercepting, after the failure, a hypervisor access request (HAR) generated by a core of a third node and comprising a physical memory address comprising multiple node identification (ID) bits identifying the first node; modifying the multiple node ID bits of the physical memory address to identify the second node; and accessing a location in the shadow of the hypervisor specified by the physical address of the HAR after the multiple node ID bits are modified.

Abstract: A method, for handling partially inconsistent states among members of a cluster in an erratic storage network that responds to requests from a client, includes assigning a unique commit identifier corresponding to each successive modification of state of the cluster when an update request has been successfully completed and correlating an incoming request to a given member of the cluster with any commit identifiers necessary to satisfy the request. The method further includes detecting, on the incoming request to the given member of the cluster, whether the commit identifiers necessary to satisfy the request have been applied to the given member, and processing the incoming request based on whether the commit identifiers necessary to satisfy the request have been applied to the given member. Operation of the members can be asynchronous.

Abstract: A first network device includes: a forwarding controller configured to forward received data; and a fault detector configured to detect occurrence of a failure in a remote second relay node. The forwarding controller includes: a forwarding unit configured to forward the received data; and a modifier configured to modify the received data for detection of the occurrence of a failure in the second relay node. The modifier includes (i) a flag option marker configured to attach a flag to data; (ii) a sequence adding unit configured to add a protocol specific number to a sequence number; and (iii) a sequence subtracting unit configured to subtract the protocol specific number from an acknowledgement number. The fault detector detects the occurrence of a failure in the remote second relay node, based on at least one of the flag and the acknowledgement number.

Abstract: Systems and techniques for capturing audio and delivering the audio in digital streaming media formats are disclosed. Several aspects of the systems and techniques operate in a cloud computing environment where computational power is allocated, utilized, and paid for entirely on demand. The systems and techniques enable a call to be made directly from a virtual machine out to a Public Switch Telephone Network (PSTN) via a common Session Interface Protocol (SIP) to PSTN Breakout service, and the audio to be delivered onward to one or more Content Delivery Network (CDN). An audio call capture interface is also provided to initiate and manage the digital streaming media formats.

Abstract: A failover input/output device and corresponding method are provided to manage failover events of input/output controller devices that operate in accordance with a computer expansion card standard, such as the Peripheral Component Interconnect Express (PCIe) standard. The failover input/output device connects to redundant first and second virtualized input/output controller devices each comprising multiple virtual network interfaces that are in an active or standby state at any given time, and to a computing device that hosts one or more processes. The failover input/output device broadcasts transactions in accordance with the computer expansion card standard initiated from the computing device to the first and second virtualized input/output controller devices.

Abstract: The system enables a call center to manage requests from remote computing clients for service. The system provides a number of software tools that allow technicians to perform routine maintenance and correct problems remotely. At the front-end, the system enables requests to be submitted by customers via various mediums, accesses a calendar to determine technician availability, determines the urgency of the request, and schedules an appropriate technician to address the reported problem. The system further includes tools that enable a technician to access a remote computing client to perform a number computer maintenance and diagnostics. Other tools enable the technician to correct problems that are detected through diagnostics. Calls to the call center are recorded and maintained in order to track pending issues and identify potential areas of improvement.

Abstract: A method and system of error recovery of a device attached to a platform without requiring a system reset. In one embodiment of the invention, a platform detects an error(s) of an attached device and shuts down the communication link with the attached device. The platform corrects the error(s) and automatically re-trains the communication link with the attached device. In this way, no reset of the platform is required to correct the detected error(s) in one embodiment of the invention.

Abstract: A method, apparatus and system for data disaster tolerance are provided in embodiments of this disclosure, the method comprising: receiving node failure information from a node; detecting along a predecessor direction and a successor direction of a failure node indicated in the node failure information according to a pre-stored node sequence to determine a first effective predecessor node and a first effective successor node, and all failure nodes between the first effective predecessor node and the first effective successor node; instructing those of all effective nodes that have local content registration index stored on the failure nodes and the first effective successor node to perform a primary index recovery process, respectively, so as to recover primary indexes of all of the failure nodes into the primary index of the first effective successor node.

Abstract: A system and method thereof for performing loss-less migration of an application group. In an exemplary embodiment, the system may include a high-availability services module structured for execution in conjunction with an operating system, and one or more computer nodes of a distributed system upon which at least one independent application can be executed upon. The high-availability services module may be structured to be executable on the one or more computer nodes for loss-less migration of the one or more independent applications, and is operable to perform checkpointing of all state in a transport connection.

Abstract: A method and system for controller level identification and isolation of a degraded physical link (PHY) in a serial attached small computer system interface (SA-SCSI) or SAS domain. The method and system uses computer readable code embodied within the controller level of an SAS domain to monitor a plurality of PHY pairs associated as connecting through a wide port. The invention compares a history of PHY pair errors to a tunable timer to determine if PHY errors reach a threshold. Should the threshold be exceeded, the controller disables the error prone PHY pair and delivers a notification. The controller may then re-enable the disabled PHY after user action or port power up.

Abstract: An identification request is received from a host device. A virtual address that identifies at least the first device and a second device is determined. The first device and the second device are coupled together to form a plurality of redundant paths between the host device and a target device. A plurality of target ports associated with the target device are determined. A single virtual target port address is assigned to the plurality of target ports associated with the target device. A first of the plurality of redundant paths between the host device and the target device is designated as an active path. The first of the plurality of redundant paths between the host device and the target device is associated with a first of the plurality of target ports. The virtual address and the virtual target port address are transmitted to the host device.

Abstract: A computer implemented method for providing homogeneous recovery in a redundant memory system. The method includes receiving a notification that a memory channel has failed, where the memory channel is one of a plurality of memory channels in a memory system. New operations are blocked from starting on the memory channels in response to the notification, and any pending operations on the memory channels are completed in response to the notification. A recovery operation is performed on the memory channels in response to the completing. The new operations are started on at least a first subset of the memory channels in response to the recovery operation completing. The memory system is configured to operate with the first subset of the memory channels.

Abstract: A cluster data processing method and system based on a unique identity control without requiring continuous network connection between the servers in the cluster and an external computer. The cluster sends a first data containing a controlling identity record to the external computer. The controlling identity record includes a unique identity and a control information. A load-balancing device of the cluster receives from the external computer a second data, which contains a controlling identity record corresponding to that of the first data. The cluster routes the second data according to the control information in the controlling identity record of the second data. The disclosed method and system may help avoid the overload problem of server resources and prevent low performance caused by continuous network connection that has to be maintained between the cluster and external server 190 in existing technology.

Abstract: A hosting provider operates a server system that provides a service to one or more tenants. The server system receives configuration data from the tenants. As part of providing the service to a given tenant, the server system attempts to access an external service due to the configuration data received from the given tenant identifying the external service. Service access errors can occur when attempting to access the external service. In response to determining that an error has occurred when attempting to access the external service, the server system sends a service access alert to a recipient associated with the given tenant. The service access alert notifies the recipient that the error has occurred.

Abstract: In an embodiment, provided is a communication device connected to time servers via a network with transfer devices. In the communication device: a network controller receives a message containing time information counted by the time server and containing a network identifier, and obtains a receiving timing of the message; a network processing unit, when the network identifier in the message does not match with any network identifier, destroys the message; a protocol processing unit, when the network identifier has a match, calculates a time error by the time information in the message and the receiving timing, detects whether a first time server is malfunctioning, and when detected the first time server malfunctioning, outputs the time error calculated by a network identifier assigned to a second time server; a servo calculates an operation amount by the time error; and a clock varies a clock rate according to the operation amount.

Abstract: Fault tolerant operation is disclosed for a primary match server of a financial exchange using an active copy-cat instance, a.k.a. backup match server, that mirrors operations in the primary match server, but only after those operations have successfully completed in the primary match server. Fault tolerant logic monitors inputs and outputs of the primary match server and gates those inputs to the backup match server once a given input has been processed. The outputs of the backup match server are then compared with the outputs of the primary match server to ensure correct operation. The disclosed embodiments further relate to fault tolerant failover mechanism allowing the backup match server to take over for the primary match server in a fault situation wherein the primary and backup match servers are loosely coupled, i.e. they need not be aware that they are operating in a fault tolerant environment.

Abstract: A first component, executing in a first data processing system, receives, over a data communication network using a first adapter, a first diagnostic heartbeat packet from a second adapter in a second data processing system. The first heartbeat packet comprises a header, a set of heartbeat parameters, and a set of diagnostic attributes. The first component determines, based on a set of values corresponding to the set of diagnostic attributes, that a soft network error condition exists in the data communication network. The soft network error condition is a network error condition that adversely affects the transmission of packets having certain properties in the data communication network. The first component stores the set of values in a state information record associated with the first component and re-routes data traffic from one link to a different link between the first and the second data processing systems.

Abstract: An approach to root cause determination in a complex systems based on monitoring and event data is disclosed. It includes a historical analysis of events with their probabilistic correlations. Applying information measures between the random variables which embody those events one can detect origins of problems and generate real-time recommendations for their locations in a hierarchical system. Estimation of system bottlenecks, as well as the risk of “black swan”-type events are also computed. The processes are based on a statistical processing of a virtual directed graph produced from historical events.

Abstract: Aspects of the present invention dynamically reduce a frequency at which IT infrastructure automatically generates alerts. Historical data across a plurality of data sources in the IT infrastructure is analyzed. An opportunity to reduce the frequency at which the IT infrastructure automatically generates the alerts is identified. A new alert policy addressing the opportunity to reduce alert frequency is generated. An impact of the new alert policy on a set of predefined service level objectives (SLOs) and service level agreements (SLAs) is evaluated. The new alert policy is deployed in the IT infrastructure.

Abstract: A host controller is coupled to host computers that host virtual machines. At least one of the virtual machines is a highly available virtual machine. The host controller detects a change in system resources and identifies a highly available virtual machine that failed before the change occurs. The host controller re-runs the highly available virtual machine upon detection of the change of the system resources.

Abstract: Various exemplary embodiments relate to a method and related network node including one or more of the following: receiving, at a policy and charging rules node (PCRN), a request from a requesting node for an establishment of a first service data flow (SDF); generating a first rule set for implementing the first SDF in response to the request; transmitting a first rule of the rule set to a first node for installation of the first rule; waiting for a period of time for a response from the first node; determining from the response whether installation of the first rule at the first node failed or succeeded; and if installation of the first rule succeeded, transmitting a second rule of the first rule set to a second node for installation of the second rule.

Abstract: A storage system comprises a storage device for storing data, a control apparatus which controls the storage device and comprises multiple communication ports, and a switch apparatus which expands the number of storage device couplings and comprises multiple communication ports. Respective multiple communication ports of the control apparatus are coupled to respective multiple communication ports of the switch apparatus, and the switch apparatus is coupled to the storage device. The control apparatus configures at least one communication port of the multiple communication ports of the control apparatus, to a dedicated communication port for outputting only a prescribed command issued when a failure is detected.

Abstract: Data that is collected and disseminated by mobile devices typically has to be processed, correlated with other data, aggregated, and then transmitted back to the mobile device users before the information becomes stale or otherwise irrelevant. These operations may be performed in a cloud-based solution that manages dataflow. The cloud-based solutions may be scalable and implemented in a fault-tolerant distributed system to support user-facing continuous sensing and processing services in the cloud-computing system. A system may monitor execution of data and shift workloads (i.e., balancing) in response to spatial and temporal load imbalances that occur in a continuous computing environment. A failure recovery protocol may be implemented that uses a checkpoint-based partial rollback recovery mechanism with selective re-execution, which may allow recovery of the continuous processing after an error while avoiding large amounts of downtime and re-execution.

Abstract: A process giving a client the capability of fixing the time within which it may attempt to connect itself to a standby server and a method thereof are provided. The client records the length of time preceding every successful-connection to at least one standby server within a predetermined period, determines an average connection setup time relating to the at least one standby server calculated from all the recorded connection setup times, detects in real time whether the client is successfully connected to a master server, and switches the connection attempts of the client away to each standby server in turn, according to the average connection setup time applying to each standby server respectively, once the client has lost its connection with the master server.

Abstract: A computer-implemented method for detecting alarm conditions, the method involving receiving at a first time a trigger notification describing a monitored occurrence on a network; setting a redundancy window to begin at the first time and to end at an expiration time; designating a first alarm condition to represent the trigger notification; receiving a second notification at a second time after the first time, the second notification describing the monitored occurrence; and determining whether a second alarm condition exists by testing whether the second time is within the redundancy window.

Abstract: A computer unit includes computer components each having a processor and a computer component controller for controlling the operations of the computer components by communicating a control signal with the computer components through a radio transmission path. Another computer unit has a similar configuration. At an instruction from an external control terminal which has recognized the fault of another computer component controller provided for the another computer unit, the computer component controller concurrently controls the operations of computer components provided for the another computer unit by communicating a control signal through a radio transmission path.

Abstract: The invention discloses a segment protection method for an Ethernet tunnel, there are two segment protection domains with a shared link in a Provider Backbone Bridge-Traffic Engineering (PBB-TE) network, and at least one of the two segment protection domains works in a non-revertive mode, and when a simultaneous failures of working segments of two segment protection domains recover or a failure of the shared node of the working segments recovers, the shared node of the working segments switches all the FDB entries of bidirectional ESPs of all the TESIs protected by the protection domains to standby entries, and after switching, out ports of the FDB entries of the ESPs are the ports connecting the shared segment. The invention also discloses a shared node of working segments of protection domains correspondingly. The invention is able to ensure that the bidirectional ESPs are co-routed after the failure recovering.

Abstract: An information system includes a configuration controller board having a capability to set, to each I/O bus bridge device in the alternative I/O board, the logical bus number set in corresponding I/O bus bridge device in the failed I/O board 20, and to set to the I/O bus bridge device in the system board 10 connected with the alternative I/O board, the same downstream side logical bus number as that of the I/O bus bridge device in the system board connected with the failed I/O board.

Abstract: A computer-implemented method, a computerized system and a product for providing a cluster of replicated servers. The method performed by a computerized server in a cluster of servers, wherein the cluster of servers are executing replicated instances of an application, wherein the replicated instances are configured to perform the same processing of the same input, comprising: detecting a message loss in the server; electively determining a responsive action to the message loss; and notifying the cluster of servers of the responsive action determined by the server, whereby other servers of the cluster of servers are able to mimic operation of the server by simulating the responsive action.

Abstract: Methods for enabling enhanced call return in a communications network is disclosed. In some embodiments, the method includes receiving an incoming telephone call from a caller, wherein the incoming telephone call identifies a subscriber as a callee thereof; capturing caller-specific information for the caller, wherein the caller-specific information includes at least one of the name of the caller and the telephone number of the caller; and storing the caller-specific information into an intelligent peripheral (IP) within the network. Some embodiments of the methods include allowing the subscriber to access the caller-specific information stored in the IP. In some embodiments, the subscriber subscribes to an enhanced call return (ECR) feature as part of a service plan. The ECR feature allows the subscriber to access caller-specific information for a predetermined number of past callers and also to return calls from those past callers.

Abstract: There is disclosed a recovery node testing system and method. The system and method include copying a protected server image associated with a protected server to a test node and creating a test environment for the test node, the test environment including at least one of the network characteristics of the protected server. The test node may then be activated using the protected server image which may then be connected to the virtual network. Once connected, at least one test is performed on the test node to confirm that the protected server image operating on the test node responds in the same manner as the protected server.

Abstract: An approach for supporting automated fault isolation and recovery is provided. A notification configuration option is transmitted to a browser interface utilized by a user associated with a customer network that is monitored by a service provider, wherein the user selects the notification configuration option to input notification information. The notification information is received, via the browser interface, from the customer. A notification message is received from a platform configured to create a workflow event in response to an alarm indicative of a fault within the customer network, wherein isolation and recovery of the fault is performed according to the workflow event, the notification message including information about the customer network during the fault isolation and recovery process. The notification message is transmitted in accordance with the stored notification information.

Abstract: A system that implements a data storage service may maintain tables in a data store on behalf of clients. The service may maintain table data in multiple replicas of partitions of the data that are stored on respective computing nodes in the system. In response to detecting a failure or fault condition, or receiving a service request from a client to move or copy a partition replica, the data store may copy a partition replica to another computing node using a physical copy mechanism. The physical copy mechanism may copy table data from physical storage locations in which it is stored to physical storage locations allocated to a destination replica on the other computing node. During copying, service requests to modify table data may be logged and applied to the replica being copied. A catch-up operation may be performed to apply modification requests received during copying to the destination replica.

Abstract: A power over Ethernet (PoE) compliant device may be able to keep alive just enough of a management controller and/or target to respond to requests and tell a host (initiator) why it may be unable to respond to a data transfer request in a desired fashion due to a power failure. Thus only a small portion of an information handling system management capabilities need stay alive for reporting the operational condition of the overall information handling system during a power outage.

Abstract: An approach for providing incomplete action monitoring and service for data transactions is described. Incompleteness of a transaction event associated with an application is monitored. The incompleteness of the transaction event is detected in response to a failure in a communication session that transports data of the application. State information relating to transmission of the data for the application is stored. The restoration of the communication session is determined. Completion of the transaction event is initiated based on the stored state information.

Abstract: A method, system, and computer product for data replication comprising enabling a second site to receive I/O from a first site; wherein the second site stores the I/O in a journal until transferring the I/O to an image, regulating, at the first site, an application by delaying acknowledgements of I/O requests from the application, and controlling the size of a do stream in the journal by slowing a response of a splitter.

Abstract: When searching for a starting point candidate on an abnormality occurred in a first management range, if a search destination extends over a second management range, a first search device transmits a query to a second search device and requests a second search device to search for a starting point of an abnormality in the second management range. The second search device receives the query, searches the second management range for a starting point candidate of an abnormality, replaces a starting point candidate of an abnormality with a dummy configuration item, and transmits a response. Thus, the first search device can search for a starting point candidate of an abnormality without grasping a connection relationship of configuration items in the second management range.

Abstract: A method for realizing an Internet protocol (IP) multimedia subsystem (IMS) disaster tolerance includes the steps as follows. An S-CSCF receives a user registration, and backs up necessary data which is required when a user service processing is restored on a storage entity in a network. An I-CSCF of user's home domain receives a service request of the user, and if it is found that the S-CSCF currently providing a service for the user fails, assigns a new S-CSCF to the user, and forwards the service request to the newly assigned S-CSCF. The newly assigned S-CSCF interrogates and acquires subscription data of the user and the necessary data backed up by the original S-CSCF from the storage entity, and then restores the user service processing according to the subscription data and the backup data. A device for realizing an IMS disaster tolerance is also provided.

Abstract: The present invention provides a message processing method, apparatus based on the SIP Protocol and an IP communication system, wherein the method comprises: a step for processing messages from a core network, for using a SIP proxy server as a uniform access interface for SIP messages from the core network to judge and distribute the received SIP messages to corresponding application servers for processing; a step for processing messages from the application servers, for using the SIP proxy server as a uniform access interface for SIP messages from the application servers to distribute, according to instructions from the application servers, the received SIP messages to corresponding core network device for processing.

Abstract: A method, article of manufacture, and apparatus for restoring data. In some embodiments, this includes determining an object to be recovered to a client, recovering at least a first portion of the object from a local resource, and recovering at least a second portion of the object from a first remote resource. In some embodiments, this may include recovering at least a third portion of the object from a second remote resource. In some embodiments, the first remote resource may be a backup server, and the second remote resource may be an other client.