Abstract: A method includes disconnecting a first component from a first network. The first component is redundant to a second component and operates in a secondary or passive redundancy mode. The second component operates in a primary or active redundancy mode and is coupled to the first network. The method also includes updating at least one of hardware and software on the first component to allow the first component to communicate on a second network. The method further includes connecting the updated first component to the second network and synchronizing data between the updated first component on the second network and the second component on the first network. In addition, the method includes switching the updated first component from the secondary redundancy mode to the primary redundancy mode.

Abstract: A method and apparatus are described including determining address using an access point address and a multicast group address, transmitting a recovery request message to a recovery server to request recovery data using the address and receiving the recovery data from the recovery server. Also described are a method and apparatus including receiving a registration message, transmitting a reply to the registration message, receiving a recovery request message, transmitting recovery data responsive to the recovery request message and transmitting a message to a recovery multicast group to determine status of the recovery multicast group.

Abstract: Real-time USB class level decoding is disclosed. In some embodiments, a first packet associated with a USB class level operation associated with a target USB device that is being monitored is received. A second packet generated by a USB hardware analyzer configured to observe USB traffic associated with the target USB device is received. It is determined based at least in part on a time associated with one or both of the first packet and the second packet that the class level operation has timed out.

Abstract: Registry information systems and methods are presented. In one embodiment, an application resource switchover method comprises receiving a switchover indication wherein the switchover indication includes an indication to switchover execution of at least one service of an application running on a primary system resource to running on a secondary system resource; performing a switchover preparation process, wherein the switchover preparation process includes automatically generating a switchover plan including indications of switchover operations for performance of a switchover process; and performing the switchover process in which the at least one of the application services is brought up on the secondary system resource in accordance with the plan of switchover operations. In one embodiment, automatically generating a plan of switchover operations includes analyzing the switchover indication, wherein the analyzing includes determining a type of switchover corresponding to the switchover indication.

Abstract: A communications link includes multiple continuously calibrated parallel lines, wherein one or more lines are at least partially powered down while being continuously calibrated to reduce power consumption. In one aspect, at least N+1 lines (where N is the logical bus width) are periodically recalibrated, and at least one redundant line is powered down between calibrations. The redundant line could be either a true spare available for use as a replacement, or an extra line which carries functional data while other lines are being calibrated in turn. In another aspect, the logical bus width is variable, but does not exceed NMAX. When N<NMAX, lines not carrying functional data are partially powered down between calibrations.

Abstract: A method and system for achieving time-awareness in the highly available, fault-tolerant execution of components in a distributed computing system, without requiring the writer of these components to explicitly write code (such as entity beans or database transactions) to make component state persistent. It is achieved by converting the intrinsically non-deterministic behavior of the distributed system to a deterministic behavior, thus enabling state recovery to be achieved by advantageously efficient checkpoint-replay techniques. The system is deterministic by repeating the execution of the receiving component by processing the messages in the same order as their associated timestamps and time-aware by allowing adjustment of message execution based on time.

Abstract: A method for wireless communication within a building automation system is disclosed. The method includes establishing a communications link between a first automation component and a second automation component, detecting a change in the communications link at the second automation component, and initiating a reset function on the second automation component in response to the detected change in the communications link. A building automation system is further disclosed. The system includes a first automation component, a second automation component in communication with the first automation component via a communication link. The second automation component further includes a reset function stored on a memory and executable by a processor in communication with the memory, such that the reset function is activated in response to a change in the communications link.

Abstract: A method begins by a processing module determining that a data storage request is a cloud data storage request. The method continues with the processing module determining at least one of a cloud storage access reliability indication and a cloud storage data reliability indication for the data storage request. The method continues with the processing module sending the data storage request and the at least one of cloud storage access reliability indication and cloud storage data reliability indication to a cloud storage system.

Abstract: Described are techniques for selecting a storage pool configuration. A set of one or more candidate storage pool configurations is determined. For each of the candidate storage pool configurations of the set, a reliability calculation is performed to determine a reliability value indicating reliability of the candidate storage pool configuration. For each of the candidate storage pool configurations of the set, an availability calculation is performed to determine an availability value indicating availability of the candidate storage pool configuration. In accordance with selection criteria, one of the candidate storage pool configurations of the set for a first storage pool is selected. The selection criteria includes the availability value and the reliability value for each of the plurality of candidate storage pool configurations.

Abstract: A multi processor computing system managing tasks based on the health index of the plurality of processors and the priority of tasks to be scheduled. The method comprise receiving the tasks to be scheduled on the computing system; preparing a queue of the tasks based on a scheduling algorithm; computing a health index value for each processor of the computing system; and scheduling the tasks on processors based on the health index value of the processors. A task from a processor with a lower health index may be moved to an available processor with a higher health index.

Abstract: Compatibility is provided between a high availability clustering system and a virtualization environment. A hardware level hypervisor runs on each host, and VM(s) run on each hypervisor. A shared virtual storage manager runs on each VM, and facilitates sharing virtual storage between VMs. Sharing virtual storage can be performed in the context of a failed application or VM. A shared virtual storage manager VM detects that the application is being failed over from the source VM to the target VM, detaches the virtual storage from the source VM, and attaches it to the target VM. The shared virtual storage manager can also enable sharing of the virtual storage when a monitored application is failed over in response to the failure of a hypervisor. Virtual storage can additionally act as an arbitrator to resolve an occurrence of split brain, when VMs become disconnected.

Abstract: A system and method are provided for using feedback to control processor frequencies in a system-on-chip (SoC). The method is associated with an SoC having a processor operating frequency responsive to a processor supply voltage on a first SOC interface, and a controller for managing the operating frequency. The controller accepts a frequency selection command associated with a first operating frequency, at a second SoC interface. The controller sends a first voltage command associated with the first frequency, via a third SOC interface, to a voltage regulator supplying the processor supply voltage. Then, the controller monitors the processor supply voltage. In response to detecting a processor first supply voltage, the processor is enabled to operate at the first frequency.

Abstract: A method and system for increasing server cluster availability by requiring at a minimum only one node and a quorum replica set of replica members to form and operate a cluster. Replica members maintain cluster operational data. A cluster operates when one node possesses a majority of replica members, which ensures that any new or surviving cluster includes consistent cluster operational data via at least one replica member from the immediately prior cluster. Arbitration provides exclusive ownership by one node of the replica members, including at cluster formation, and when the owning node fails. Arbitration uses a fast mutual exclusion algorithm and a reservation mechanism to challenge for and defend the exclusive reservation of each member. A quorum replica set algorithm brings members online and offline with data consistency, including updating unreconciled replica members, and ensures consistent read and update operations.

Abstract: A method and system for increasing server cluster availability by requiring at a minimum only one node and a quorum replica set of replica members to form and operate a cluster. Replica members maintain cluster operational data. A cluster operates when one node possesses a majority of replica members, which ensures that any new or surviving cluster includes consistent cluster operational data via at least one replica member from the immediately prior cluster. Arbitration provides exclusive ownership by one node of the replica members, including at cluster formation, and when the owning node fails. Arbitration uses a fast mutual exclusion algorithm and a reservation mechanism to challenge for and defend the exclusive reservation of each member. A quorum replica set algorithm brings members online and offline with data consistency, including updating unreconciled replica members, and ensures consistent read and update operations.

Abstract: A system, method, and computer program are provided for combining results of event processing received from a plurality of servers. In use, an event is sent to a plurality of servers. Further, a result of processing of the event is received from each of the servers. In addition, the results received from the plurality of servers are combined.

Abstract: A hybrid drive is disclosed comprising a head actuated over a disk, and a non-volatile semiconductor memory (NVSM). When a write command is received from a host that is mapped to the NVSM, the write command is serviced by writing data to the NVSM, and when a life remaining of the NVSM falls below a threshold, by also writing a copy of the data to the disk.

Abstract: A disaster recovery system can include a plurality of resources arranged in a cloud computing environment. Each of the resources can be assignable to function within the cloud computing environment as part of one or more media systems. A content intake service can be programmed to control delivery of an incoming media asset to the cloud computing environment. A monitoring and recovery process can be programmed to monitor a primary media system to which the incoming media asset is being provided and, in response to detecting a disaster recovery condition, the monitoring and recovery process can intelligently manage selected resources of the plurality of resources based on the incoming media asset being delivered to the primary media system.

Abstract: A search facility is used to predict the impact of change on events detected in application logic, where the change may involve a computing resource used by or referenced by the application logic and/or by event detection logic. The search may be performed prior to making a change, in order to judge potential impact of the change, or after the change has been made. The search makes the prediction by evaluating semantics of conditions that specify when and/or and how an event will be detected at run-time.

Abstract: A search facility is used to predict the impact of change on events detected in application logic, where the change may involve a computing resource used by or referenced by the application logic and/or by event detection logic. The search may be performed prior to making a change, in order to judge potential impact of the change, or after the change has been made. The search makes the prediction by evaluating semantics of conditions that specify when and/or and how an event will be detected at run-time.

Abstract: A workspace computer and/or a runtime computer of the present invention determines a D value quantitatively indicative of a value of dependability of a target system, in accordance with dependability description data indicative of a requirement and specification regarding the dependability of the target system.

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: This disclosure pertains to a method in a network node, a method in user equipment, a network node and user equipment in a wireless communications network. More particularly, there is provided methods and platforms for network based control of report messages comprising logged measurements in a wireless communications network. In accordance with some example embodiments, a UE (30) that has stored logged data i.e. logged measurements that are bigger than a single transmission packet, i.e. report message, segments the logged measurements and sends only a portion of the logged measurements that fits into a single report message. The UE (30) also indicates to a network node (28) that additional logged measurements exist at the UE buffer (44).

Abstract: A method of mitigating risks during a high availability and disaster recovery (HA/DR) rehearsal comprises, with a processor, performing a number of checks on a number of applications to determine the operational performance of the applications, and with the processor, determining if the applications comprise design patterns that indicate potential HA/DR risks.

Abstract: The invention concerns a method of providing a successor list (L) for routing in a peer-to-peer overlay network (N), and a network node and a computer program product to execute this method. The peer-to-peer overlay network (N) comprises a plurality of nodes (0, 20, 50, 87, 112, 140, 179, 200, 211, 223, 240). The successor list (L) specifies identifiers of at least two successor nodes (211, 223) subsequently succeeding a first node (200) of the plurality of nodes (0, 20, 50, 87, 112, 140, 179, 200, 211, 223, 240) with regard to a topology structure of the peer-to-peer overlay network. It is determined whether the at least two successor nodes (211, 223) listed in the successor list (L) run on the same physical hardware.

Abstract: Managing firmware in a computing system storing a plurality of different firmware images for the same firmware includes: calculating, for each firmware image in dependence upon a plurality of predefined factors, a preference score; responsive to a failure of a particular firmware image, selecting a firmware image having a highest preference score; and failing over to the selected firmware image.

Abstract: In a rejuvenation processing device (1), at least one host machine (3) is selected as an object to be rejuvenated from among each of the host machines (3). At least one virtual machine (302) is selected from among the virtual machines (302) operating in the host machine (3) which is not selected as an object to be rejuvenated. The operation of the selected virtual machine (302) is stopped, and the virtual machine (302) operating in the host machine (3) selected as the object to be rejuvenated is migrated to the host machine (3) in which the virtual machine (302) operates. The host machine (3) selected as the object to be rejuvenated is rejuvenated. Thereby, it is possible to provide a rejuvenation processing device capable of simultaneously rejuvenating the host machines and the virtual machines necessary to be rejuvenated, while continuously operating the host machines and the virtual machines which are not necessary to be rejuvenated.

Abstract: A method, system, and computer program product for maintaining reliability in a computer system. In an example embodiment, the method includes performing a first data computation by a first set of processors, the first set of processors having a first computer processor architecture. The method continues by performing a second data computation by a second processor coupled to the first set of processors, the second processor having a second computer processor architecture, the first computer processor architecture being different than the second computer processor architecture. Finally, the method includes dynamically allocating computational resources of the first set of processors and the second processor based on at least one metric while the first set of processors and the second processor are in operation such that the accuracy and processing speed of the first data computation and the second data computation are optimized.

Abstract: The present invention systems and methods facilitate configuration of functional components included in a remotely located integrated circuit die. In one exemplary implementation, a die functional component reconfiguration request process is engaged in wherein a system requests a reconfiguration code from a remote centralized resource. A reconfiguration code production process is executed in which a request for a reconfiguration code and a permission indicator are received, validity of permission indicator is analyzed, and a reconfiguration code is provided if the permission indicator is valid. A die functional component configuration process is performed on the die when an appropriate reconfiguration code is received by the die. The functional component configuration process includes directing alteration of a functional component configuration. Workflow is diverted from disabled functional components to enabled functional components.

Abstract: An application can specify reliability values via a communication path between the application and the registers. Application reliability could increase if the application itself could specify the timeout and retry values. For instance, some errors might be prevented if the timeout value is lengthened by a short amount. A longer timeout value would result in slower performance because the memory component could not be accessed during the timeout period. However, resolving errors in memory devices would prevent unrecoverable error indicators from being returned to the application, which would in turn limit application and system crashes. Creating a communication path between the application and the hardware registers would allow the application to modify the reliability of memory operations.

Abstract: A healthcare communication system includes a first plurality of computer devices operable as a nurse call system. The first plurality of computer devices has core nurse call functionality. The system also includes a second plurality of computer devices communicatively coupled to the first plurality of computer devices. The first plurality of computer devices are interconnected logically and/or physically in a tiered architecture arrangement to provide fault isolation among the tiers so that faults occurring in computer devices of one tier don't affect the operability of computer devices in other tiers and so that faults occurring in any of the second plurality of computer devices don't affect the core nurse call functionality of the first plurality of computer devices.

Abstract: Event management techniques for use in a computer system comprising an event generating component generating at least one event and an event handling component to apply one or more business process rules in response to the event. In one embodiment of the invention, an event generation component provides to an event handling component not only notification of an event but also context information about the event, in the same communication. The context information may provide all the information necessary for the event handling component to apply one or more business policy rules to determine how to handle the event. In some implementations having multiple event handling components of different types, the event generating component may be configured to provide notification of events to the event handling components in a specified order. In some implementations, multiple event handling components may be joined in a logical pool, sharing responsibility for handling events.

Abstract: Methods, systems, and computer program products for configurable alert delivery in a distributed processing system are provided. Embodiments include for each alert generated by an incident analyzer, applying active alert filters to the alert; wherein applying the active alert filters to the alert includes: creating a list of all active alert filters and a set of all active listeners; and for each active alert filter, running the active alert filter; if the active alert filter indicates that the alert should not go to one or more of the active listeners, removing the one or more active listeners from the set of all active listeners; if the active listeners set is empty, stopping processing of the alert; and if the active listeners set is not empty, selecting the next active alert filter from the active alert filter list.

Abstract: Provided are techniques for determining a recovery time for a resource in a heterogeneous computing environment comprising interdependent resources. A graph for the resource representing all sequence dependencies and all group relations are created. The recovery time may be a cumulative startup time or a cumulative shutdown time of the resource considering interdependencies of the resource to other resources. The recovery time for all support resources having sequence dependencies with the resource is calculated and each node representing the support resources are removed from the graph. Then the recovery time for all member resources left in the graph that have group relations with the resource is calculated per a group type of the resource. The recovery time for the resource is a sum of the recovery time of all support resources, the recovery time of all member resources, and a unit recovery time of the resource.

Abstract: There are provided a method, a system and a computer program product for minimizing data transfer latency between redundant storage controllers in a network-based storage controller system that utilizes adaptive data throttling. Each corresponding redundant storage controller calculates average time latency for round trip communications between the corresponding redundant storage controller and the other redundant storage controllers during a fixed monitoring period. The corresponding redundant storage controller, at the end of each fixed monitoring period, compares the average time latency to a fixed latency. The corresponding redundant storage controller selectively throttles data transfer between the corresponding redundant storage controller and a server and data transfer between the corresponding redundant storage controller and a back-end storage, based on the comparison.

Abstract: The present disclosure generally relates to the testing of a system that includes software or hardware components. In some embodiments, a testing framework generates a set of test cases for a system under test using a grammar. Each test case may perform an action, such as provide an input to the system under test, and result in an output from the system under test. The inputs and outputs are then compared to the expected results to determine whether the system under test is performing correctly. Prior to generating the set of test cases from the grammar, the testing framework processes the grammar to identify attributes of the test cases to be derived from the grammar and facilitates the modification of the grammar.

Abstract: Disclosed are methods and devices, among which is a method for configuring an electronic device. In one embodiment, an electronic device may include one or more memory locations having stored values representative of the capabilities of the device. According to an example configuration method, a configuring system may access the device capabilities from the one or more memory locations and configure the device based on the accessed device capabilities.

Abstract: This description describes technologies relating to resource allocation in distributed systems. In general, one aspect of the subject matter described in this specification can be embodied in methods that identifying a plurality of user data sets and associated properties; identifying a plurality of clusters and associated properties; identifying a distribution of replicas of the user data sets in the clusters, at least one of the clusters being assigned with two or more replicas of one of the user data sets; identifying resource allocation variables, the resource allocation variables corresponding to the distribution of replicas of the user data sets in the clusters; transforming the resource allocation variables and their relation from the distribution of replicas of the user data sets in the clusters by assigning a single replica of one of the user data sets to one of the clusters; and allocating resource using the transformed resource allocation variables.

Abstract: Upon receipt of an availability requirement of a computer system under management, a redundant configuration management system determines placement of processing programs in physical servers equipped in the computer system to satisfy the availability requirement with reference to system configuration information indicative of the configuration of the computer system and restriction information for limiting the number of processing programs which can be run by the physical servers.

Abstract: A method of managing errors in a data processing system may involve at least one computer system. Each computer system may include a processor that executes an operating system, firmware, and system memory storing instructions for the operating system. A firmware error handler resident in the firmware may identify an error occurring in the computer system. The firmware error handler may determine whether the operating system is required to take an action in response to the error. If the operating system is not required to take an action in response to the error, the firmware error handler may create an error log accessible to the operating system appropriate to cause the operating system to take no action.

Abstract: Example embodiments of the present invention provide authenticated file system that provides integrity and freshness of both data and metadata more efficiently than existing systems. The architecture of example embodiments of the present invention is natural to cloud settings involving a cloud service provider and enterprise-class tenants, thereby addressing key practical considerations, including garbage collection, multiple storage tiers, multi-layer caching, and checkpointing. Example embodiments of the present invention support a combination of strong integrity protection and practicality for large (e.g., petabyte-scale), high-throughput file systems. Further, example embodiments of the present invention support proofs of retrievability (PoRs) that let the cloud prove to the tenant efficiently at any time and for arbitrary workloads that the full file system (i.e.

Abstract: A method, system and machine-readable storage medium for providing fault tolerance in a distributed mobile architecture (dMA) system. The method includes receiving a message or failing to receive the message within a predetermined time relating to a first dMA gateway (dMAG) at a second dMAG. It is determined whether the first dMAG is not operational or is otherwise offline based on the received message or the failure to receive the message. One or more dMA nodes associated with the first dMAG are notified in order to request connections to an external system via the second dMAG. The external system is also notified to request connections to one or more dMA nodes associated with the first dMAG via the second dMAG.

Abstract: A computer-implemented method may include monitoring a computing system for evidence of potential data failures within the computing system. The computer-implemented method may also include detecting evidence that indicates a potential data failure while monitoring the computing system and identifying data implicated in the potential data failure based on the detected evidence. The computer-implemented method may further include initiating an action configured to proactively facilitate restoration of at least a portion of the data implicated in the potential data failure prior to determining whether the data implicated in the potential data failure needs to be restored. Various other methods, systems, and computer-readable media are also disclosed.

Abstract: A detection device to detect a power serving time of a super capacitor for a power-disconnected storage card and an amount of the data packets capable of being stored during the detected serving time is provided. The power-disconnected storage card includes a memory. The detection device includes a power supply unit, the super capacitor, a controller, a storage unit, and a detection unit. The storage unit stores the data packets. The detection unit includes a charge notification module, a data notification module and a time module. The charge notification module generates a first notification signal to the time module. The data notification module generates a second notification signal to the time module when the storage unit transmits the data packet to the memory. The time module records time when the memory completely store the data packet according to the first notification signal and the second notification signal.

Abstract: When a node has to restart its control component, or a (e.g., label-switched path signaling) part of its control component, if that node can preserve its forwarding information across the restart, the effects of such restarts on label switched path(s) include the restarting node are minimized. A node's ability to preserve forwarding information across a control component (part) restart is advertised. In the event of a restart, stale forwarding information can be used for a limited time before. The restarting node can use its forwarding information, as well as received label-path advertisements, to determine which of its labels should be associated with the path, for advertisement to its peers.

Abstract: Rapid failure detection and recovery in wireless communication networks is needed in order to meet, among other things, carrier class Ethernet transport channel standards. Thus, resilient wireless packet communications is provided using a hardware-assisted rapid transport channel failure detection algorithm and a Gigabit Ethernet data access card with an engine configured accordingly. In networks with various topologies, this is provided in combination with their existing protocols, such as rapid spanning tree and link aggregation protocols, respectively.

Abstract: Techniques for assessing a resiliency level in an information technology system and architecting the information technology system in accordance with the resiliency level are disclosed. An estimated resiliency level may be estimated from different system characteristics to obtain an estimated resiliency level for the information technology system. The cost and the degree of effort to design for the information technology system may be estimated from the estimated resiliency level. The resiliency level may be further determined from different system factors. Consequently, a specification for a resiliency feature is obtained by accessing a set of resiliency guidelines based on the resiliency level and a technology theme. The resiliency feature may then be applied to the information technology system.

Abstract: Configuration requirements for an Availability Management Framework (AMF) configuration are generated from high level user requirements that specify a subset of properties of an AMF configuration. The user requirements are first mapped into entity prototypes defined in an extended Entity Types File (ETF) model. A computer system identifies additional entity prototypes and dependency thereof that support functionalities of the mapped entity prototypes under a set of grouping conditions. The computer system calculates the required number of component service instances (CSIs) and service instances (SIs) that satisfy the user requirements. The calculation is based on the subset of the properties specified by the user requirements and measurements associated with the entity prototypes in the extended ETF model. The computer system then forms configuration requirements including the required number of CSIs and SIs for generating the AMF configuration that satisfies the user requirements.

Abstract: The storage system of the present invention is able to generate one virtual logical device from different logical devices which exist in each of the different storage control units and remote-copy all or part of the virtual logical device to another logical device. The same virtual identifier is set for a volume of the first storage unit and for a volume of the second storage unit. The path control unit of the host identifies a plurality of volumes which have the same virtual identifier as one virtual volume. A remote copy pair can also be set by a virtual volume and a volume of the third storage unit. The setting of the virtual volume and the setting of the remote copy can be performed by means of an instruction from the management server.

Abstract: A client-side enforcement mechanism may allow application security policies to be specified at a server in a programmatic manner. Servers may specify security policies as JavaScript functions included in a page returned by the server and run before other scripts. At runtime, and during initial loading, the functions are invoked by the client on each page modification to ensure the page conforms to the security policy. As such, before a mutation takes effect, the policy may transform that mutation and the code and data of the page. Replicated code execution may take place at both the client and the server where the server runs its own shadow copy of a client-side application in a trusted execution environment so that the server may check that the method calls coming from the client correspond to a correct execution of the client-side application The redundant execution at the client can be untrusted, but serves to improve the responsiveness and performance of the Web application.

Abstract: Core dump is performed over a network without relying on network device drivers. Instead of network device drivers, firmware of network devices that is typically used during boot is preserved in memory post-boot, and one or more application program interfaces of the firmware are invoked to perform the network core dump. For ease of implementation, a network bootstrap program that has standard application program interfaces for calling into the firmware of network devices may be invoked when performing core dump over the network.