Abstract: Systems and methods for controlling one or more visual indicators, such as unit identification devices (UIDs), are provided. Control of such visual indicators allows lighting sequences to be displayed vis-à-vis the visual indicators in a data center or similar environment including multiple hardware devices or units, such as server blades in multiple chassis enclosures in a data center. In this way, users such as data center administrators, information technology (IT) personnel, etc. can be alerted to hardware events that impact hardware devices or units, such as hardware faults. The visual indicators can be controlled in such a way that animated lighting sequences can be used to guide users to the hardware devices or units experiencing the hardware event(s).

Abstract: Embodiments are described for operating a device management bus coupled to a remote access controller and a managed device. The remote access controller detects an inoperable state of the bus and determines a FRU (Field Replaceable Unit) memory is accessible on the managed device. A predefined reset indicator is written to the FRU memory. The managed device monitors for the reset indicator being written to a specified location in FRU memory. Upon detecting the reset indicator in FRU memory, the managed device resets a bus controller coupled to the device management bus and transmits a reset notification on the device management bus. The remote access controller may include an I2C shim that controls access to an I2C multiplexer utilized for transmitting I2C commands from a service processor and an I2C coprocessor, preventing certain inoperable bus states due to concurrent operation of the I2C multiplexer by the I2C coprocessor and the service processor.

Abstract: A method and apparatus of a device that simulates a plurality of network elements is described. In an exemplary embodiment, the device receives network topology information for the plurality of simulated network elements. The device further instantiates a container for each of the plurality of simulated network elements. The device additionally configures a set of processes for each of the plurality of containers, where each of the set of processes simulates at least one of the plurality of simulated network elements. The plurality of set of processes further implements a network topology represented by the network topology information. The device performs a test of the network topology and saves the results of the test.

Abstract: An unsupervised pattern extraction system and method for extracting user interested patterns from various kinds of data such as system-level metric values, system call traces, and semi-structured or free form text log data and performing holistic root cause analysis for distributed systems. The distributed system includes a plurality of computer machines or smart devices. The system consists of both real time data collection and analytics functions. The analytics functions automatically extract event patterns and recognize recurrent events in real time by analyzing collected data streams from different sources. A root cause analysis component analyzes the extracted events and identifies both correlation and causality relationships among different components to pinpoint root cause of a networked-system anomaly.

Abstract: A first information handling system may detect a VRRP configuration of the first information handling system and a peer information handling system, along with a VLT connection between the first information handling system and the peer information handling system. VLT control information may be used by the first information handling system to designate the first information handling system as a VRRP master node. The first information handling system may then control VRRP operation of the first information handling system and the peer information handling system based, at least in part, on the designation of the first information handling system as the VRRP master node.

Abstract: Disclosed are various embodiments for a log monitoring system to monitor the health of server log files. The log monitoring system may generate at least one log health signal based on an analysis of the server log content generated by at least one host application. Furthermore, the application may generate a system integrity record based on the at least one log health signal and an external signal, wherein the external signal embodies a system health metric of the at least one host application.

Abstract: A reconstruction may be divided into a set of partial operations and scheduled in parallel using a distributed protocol which overlays a reduction tree to aggregate the results. In addition, a scheduling algorithm called multiple partial parallel repair is introduced for handling concurrent failures. Multiple reconstructions may be coordinated in parallel while working to minimize the conflict for shared resources.

Abstract: A method for locating and isolating a failed node of an electromechanical management bus in a communication device. The method includes, in a communication process, an SHMC in operation records communication states of electromechanical management buses; the SHMC in operation performs calculation and analysis operations on data associated with the communication states, and determines whether there is an irrecoverable communication abnormality in a corresponding bus; if so, the SHMC sends, by means of a normal electromechanical management bus, a command to an electromechanical management node subordinate to the abnormal electromechanical management bus, such that the electromechanical management node controls a corresponding mechanical switch of the bus, coordinates respective nodes of the abnormal electromechanical management bus to conduct mutual communication tests with each other, locates a failed node, and returns location information of the failed node.

Abstract: A method and apparatus for implementing a buffer cache for a persistent file system in non-volatile memory is provided. A set of data is maintained in one or more extents in non-volatile random-access memory (NVRAM) of a computing device. At least one buffer header is allocated in dynamic random-access memory (DRAM) of the computing device. In response to a read request by a first process executing on the computing device to access one or more first data blocks in a first extent of the one or more extents, the first process is granted direct read access of the first extent in NVRAM. A reference to the first extent in NVRAM is stored in a first buffer header. The first buffer header is associated with the first process. The first process uses the first buffer header to directly access the one or more first data blocks in NVRAM.

Abstract: A server system and a control method for a storage unit are provided. The server system includes multiple modular devices and a connection device. The storage unit in the modular devices includes a transmission interface expander. The transmission interface expander detects whether connects a former modular device, and sets the storage unit as a slave device of the former modular device when the transmission interface expander connects the former modular device. When the transmission interface expander does not connect the former modular device, the transmission interface expander is set as a storage node and communicates to the external server, and the latter storage unit connected behind the transmission interface expander becomes a slave device of the transmission interface expander.

Abstract: Many services measure quality of service (QoS) according to abstract metrics based on general heuristics of QoS determinants (e.g., VoIP service providers may presume that QoS is predominantly determined by network performance). However, users' QoS perceptions are often based on their experiences with particular activities of the service, which may utilize different service paths having different QoS determinants. Therefore, QoS may be measured by identifying the activities of the service, and the dependencies among the components of such services; for respective activities and dependencies, identifying a service path from the source to the user, and the segments comprising the service path; measuring the quality of the segments of the service path; and calculating the QoS of the activity according to the QoS of the segments of the service path providing the activity. This approach may yield QoS information of greater relevance to the users' experience and with greater analytic value.

Abstract: Apparatuses, methods, and computer-readable media regard automatic symptom data collection in cloud deployment. The method includes detecting a failure, determining when to trigger symptom data collection for collecting information about the failure, and transmitting an indication of the triggering of the symptom data collection to a management function of the virtual network function.

Abstract: Methods, systems, and computer program products include, for example, transmitting, by one or more processor, session copy data from a server for storage on a client, and requesting, by the one or more processor, transmission of the stored session copy data from the client in response to loss of session data being detected on the server.

Abstract: Embodiments include identifying unusual activity in an IT system based on user configurable message anomaly scoring. Aspects include receiving a message stream for the IT system and dividing the message stream into a plurality of intervals, wherein each interval corresponds to a time period. Aspects also include identifying and removing one or more intervals from the plurality of intervals that include a startup or a shutdown of an element of the IT system, identifying and removing one or more intervals from the plurality of intervals that correspond to a standard level of command activity and an elevated level of user complaint activity, and identifying and removing one or more intervals from the plurality of intervals that correspond to an elevated level of command activity and an standard level of user complaint activity. Aspects further include creating a training set of intervals that consists of the remaining labelled intervals.

Abstract: A method for quick reconfiguration of routing in the event of a fault in a port of a switch including a plurality of ports, persistent memory for maintaining data corresponding to a routing table, and working memory for working on data corresponding to a routing table, includes: transmitting a first message to indicate a fault; independently updating the routing data only in the working memory by replacing an identifier of the port with the fault with an identifier of an operational port, the identifier of the operational port being selected locally; and transmitting a second message to indicate that the table was updated.

Abstract: A video packet stream is transmitted from a transmitting device to a receiving device over a network, by transmitting an audio packet stream to the receiving device, determining a measure of network bandwidth in dependence on one or more metrics associated with receiving the audio packet stream at the receiving device, and enabling a video packet stream in dependence on the determined measure.

Abstract: A contribution encoder receives media from a source, encodes the media, and transmits the encoded media to a network-adaptive encoding system for eventual distribution to end users. The network-adaptive encoding system tests a network connection between the contribution encoder and the network-adaptive encoding system before transmission of the encoded media begins. The network-adaptive encoding system uses the results of the test to select appropriate values for parameters that define the encoding and transmission of the media. The selected parameter values are transmitted by the network-adaptive encoding system to the contribution encoder for use in encoding and transmitting the media.

Abstract: Disclosed aspects relate to virtual machine management in a shared pool of configurable computing resources. A single multi-node server may be established. The single multi-node server may include a running virtual machine, a set of computing resources that includes a possessed subset of the set of computing resources, a source hypervisor, and a target hypervisor. The possessed subset of the set of computing resources may be assigned to the target hypervisor from the source hypervisor. The running virtual machine may be run using the target hypervisor.

Abstract: Systems and methods that result in a stable storage system are provided. In the storage system, the latency spikes may be reduced when multiple volumes are aggregated into transfer sets according to system characteristics. The storage system transfers ownership of volumes in each transfer set as a single transaction. In the storage system, connectivity between the host and the storage controller is re-established based on the connectivity in a physical transport layer and a single path. In the storage system, pre-mature failback is also avoided when ownership of volumes is transferred back to a preferred storage controller when the same number of paths existed between the host and the preferred storage controller before and after a failover operation. Further, the storage system generates connectivity reports that display connectivity paths between hosts, storage controllers, and volumes.

Abstract: An embodiment includes a module, comprising: a memory bus interface; circuitry; and a controller coupled to the memory bus interface and the circuitry, and configured to: collect meta-data associated with the circuitry; and enable access to the meta-data in response to a memory access received through the memory bus interface.

Abstract: A method or system for controlling an energy or power supply network having a coordination centre, a plurality of local end-user units and a communications network linking the local units and the coordination centre and a supply network connecting the local units and the coordination centre for energy or power supply. The supply network has constraints that limits power or energy consumption at at least one of the local end-user units. The method or system is adapted so that the coordination centre transmits a control signal indicating a degree of imbalance of the system to the at least one of the local end-user units, and the at least one local end-user unit is adapted to transmit a reaction signal to the coordination centre indicative of a power schedule for the local unit.

Abstract: In a memory system an interface circuit includes an interface to a memory array, and to a data signal. The circuit includes loopback circuitry to enable loopback of received data signals without having to access the data from the memory array. The circuit can be part of a memory device, a register device, or a data buffer. The circuit interfaces to a memory array of a memory device, and performs loopback functions for a host controller that can test the operation of the interface.

Abstract: Techniques are disclosed for provided automatic fault tolerance in data storage systems and other computer systems managing access to shared computing resources using the construct of a resource instance manager together with an architecture for designing and implementing task-oriented state-based commands for accessing the shared computing resources. A set of resource instance managers respond to all commands requesting access to a set of respective shared resources. Access to each shared resource is managed by a unique resource instance manager for that resource which maintains a consistent state for that shared resource. When commands are designed appropriately, the system can be restored using a system state history maintained transparently by a system-provided application program interface.

Abstract: A method and system for server fault analysis are described. A server configuration analyzer retrieves event logs collected from a server with a fault such as a misconfiguration. These event logs can then be analyzed using metrics to identify one or more messages in the logs that indicate a cause of the fault on the server. Once the messages are identified, the server configuration analyzer retrieves remedial commands that may be used to correct the fault from a database that stores remedial commands correlated with event log messages. The server configuration analyzer can then present the messages and remedial commands to a user to assist with identifying the cause of the fault and correcting it.

Abstract: A communication network includes a plurality of nodes, wherein each of the nodes is operably connected to a bus. A transmitting node sends a data communication to a receiving node in accordance with a protocol. Each data communication contains information to be communicated within a data frame structure. The receiving node is configured to determine a compromised state of the transmitting node from data communication and to initiate a response method. The transmitting node disassociates from the bus in accordance with the detection trigger and coordinated response strategy.

Abstract: The invention relates to a method for operating a communication network (101), in particular an Ethernet network. Network devices (1) which are coupled to the network comprise a switch device (4), a first and a second control device (2, 3) which are coupled to the switch device (4), and the switch device (4) comprises for the first and the second control device (2, 3) a respective input port (10, 14) and emitter port (9, 13) for sending and receiving data via the communication network (6). Ring-shaped communication paths for data are provided so that redundant data can be transmitted in different directions and checked for consistency. An improved protection against failure and error analysis in the event of transmission errors are ensured by the ring-shaped structure using bidirectional communication paths. The invention further relates to a network arrangement (101) comprising several corresponding network devices (100, 200, 300) which operate according to the method.

Abstract: Systems and method for the distribution of data center power are disclosed. In one embodiment, the system includes a reserve power system comprising a switchboard, reserve UPS, and generator; and a primary power system, the primary power system comprising a primary UPS coupled to a primary power source via a primary input, a critical load via a primary output, and the reserve power system via an automatic bypass input.

Abstract: A method of detecting a ground fault in a faulty electronic control unit. A ground fault detection technique executed by a processor is enabled. The processor determines a message count for each respective electronic control unit transmitted during a ground offset condition over a predetermined time period. The message count includes messages communicated within a communication bus having a measured voltage at least a predetermined voltage value above an expected voltage value. The message counts for each respective electronic control unit are normalized. The faulty electronic control unit is identified as a function of the normalized message counts. A fault signal is output to identify the fault electronic control unit.

Abstract: Methods and apparatuses are provided for transmitting signaling information by a transmitting apparatus in a broadcasting system. A controller generates a codeword by encoding information bits of the signaling information. The codeword includes the information bits and parity bits. The controller punctures one or more of the parity bits to generate a punctured codeword. The controller generates a plurality of frames. The plurality of frames include a first frame including at least a part of the punctured codeword and a second frame including at least one additional parity bit for the signaling information. A transmitter transmits the plurality of frames. The at least a part of the punctured codeword is included in a preamble part of the first frame and the at least one additional parity bit is included in a preamble part of the second frame.

Abstract: Technologies for datacenter management include one or more computing racks each including a rack controller. The rack controller may receive system, performance, or health metrics for the components of the computing rack. The rack controller generates regression models to predict component lifespan and may predict logical machine lifespans based on the lifespan of the included hardware components. The rack controller may generate notifications or schedule maintenance sessions based on remaining component or logical machine lifespans. The rack controller may compose logical machines using components having similar remaining lifespans. In some embodiments the rack controller may validate a service level agreement prior to executing an application based on the probability of component failure. A management interface may generate an interactive visualization of the system state and optimize the datacenter schedule based on optimization rules derived from human input in response to the visualization.

Abstract: The present disclosure relates to a load sharing system having a plurality of power supplies for powering a plurality of corresponding loads. Each one of the power supplies is associated with at least one of the loads. A power bus is also provided. A plurality of inductors is connected to the power bus. Each one of the inductors is further connected to at least one of the loads and to at least one of the power supplies, such that each adjacent pair of the inductors is connected in parallel relative to at least one of the loads. Each of the inductors has an inductance value sufficient so that if a fault develops on the power bus it serves to isolate the power supplies from the power bus. The inductance value further is such that if any one of the power supplies fails, the specific pair of inductors coupled in parallel to the load associated with the failed power supply allows the load to draw power over the power bus from other ones of the power supplies through the specific pair of inductors.

Abstract: Described herein are various technologies for providing active mitigation of cyber-attacks against industrial and other control systems. A filtering device is connected to a backplane of a control system and receives communications from various modules of the control system. The filter device analyzes the received communications and determines whether they are genuine and permissible communications for the control system. Validated signals are output to a communications bus of the control system by the filter device, while impermissible communications are blocked. The filter device can be interposed between the modules of the control system and the backplane, or the filter device can be included as a component of a control system backplane.

Abstract: The present application provides a method for planning a recovery resource for resisting N-time faults and an optical transmission device, and the method includes: planning, on an optical transmission device according to preset network planning information, a recovery resource for resisting (N?1)-time faults for preset (N?1)-time faults, and the recovery resource for resisting (N?1)-time faults is an optimal recovery resource corresponding to each interrupted service during the preset (N?1)-time faults; and planning, by the optical transmission device according to the network planning information and the recovery resource for resisting (N?1)-time faults, a recovery resource for resisting N-time faults for preset N-time faults, where the recovery resource for resisting N-time faults is a network-wide optimal recovery resource corresponding to interrupted services during the N-time faults.

Abstract: A VIRTIO Relay Program allows packets to be transferred from a Network Interface Device (NID), across a PCIe bus to a host, and to a virtual machine executing on the host. Rather than an OvS switch subsystem of the host making packet switching decisions, switching rules are transferred to the NID and the NID makes packet switching decisions. Transfer of a packet from the NID to the host occurs across an SR-IOV compliant PCIe virtual function and into host memory. Transfer from that memory and into memory space of the virtual machine is a VIRTIO transfer. This relaying of the packet occurs in no more than two read/write transfers without the host making any packet steering decision based on any packet header. Packet counts/statistics for the switched flow are maintained by the OvS switch subsystem just as if it were the subsystem that had performed the packet switching.

Abstract: A method for RDMA optimized high availability for in-memory storing of data includes receiving RDMA key-value store write requests in a network adapter of a primary computing server directed to writing data to an in-memory key-value store of the primary computing server and performing RDMA write operations of the data by the network adapter of the primary computing server responsive to the RDMA key-value store write requests. The method also includes replicating the RDMA key-value store write requests to a network adapter of a secondary computing server, by the network adapter of the primary computing server. Finally, the method includes providing address translation data for the in-memory key-value store of the primary computing server from the network adapter of the primary computing server to the network adapter of the secondary computing server.

Abstract: A smart add-in card can be leveraged to perform testing on a host server computer. The add-in card can include an embedded processor and memory. Tests can be downloaded to the add-in card to test a protocol under which the add-in card operates. In a particular example, a PCIe communication bus couples the motherboard to the add-in card and the tests can purposely violate the PCIe specification. The tests can be developed to test conditions that are typically difficult to test without the use of special hardware. However, the smart add-in card can be a simple Network Interface Card (NIC) that resides on the host server computer during normal operation and is used for communication other than security testing. By using the NIC as a testing device, repeatable and reliable testing can be obtained.

Abstract: Technologies for controlling timing calibration of a dedicated inter-integrated circuit data bus by a primary microcontroller are disclosed. The primary microcontroller performs a data transfer with a secondary integrated circuit using the dedicated inter-integrated circuit data bus, and determines a duration of the data transfer. If the duration is outside of an acceptable range, the primary microcontroller updates one or more data transfer timing parameters so that the duration of future data transfers are closer to the acceptable range.

Abstract: A method of providing at least one data carrier for a computer system includes downloading at least one image of a data carrier from a predetermined network source by a service processor of the computer system, the service processor being operable independently of a main processor and an operating system of the computer system; storing, by the service processor, the at least one downloaded image in a non-volatile bulk memory; incorporating, by the service processor, the at least one stored image as active data carrier of a virtual memory drive; and emulating a standard interface that accesses the virtual memory drive such that an operating system can access the active data carrier without manufacturer-specific driver software.

Abstract: An information processing apparatus connected to a printing apparatus includes a database configured to associate and manage a command identifier and a maintenance command, an acquisition unit configured to acquire from the database the maintenance command corresponding to a command identifier designated by an application and acquired via a spooler according to a port monitor that functions based on an expansion file, and a transmission unit configured to transmit the acquired maintenance command to the printing apparatus according to the port monitor that functions based on the expansion file.

Abstract: Techniques described herein relate to automatic system suspension based upon downstream system failure in service-oriented architecture (SOA) applications. A system management module of a SOA system may be configured to detect a problem with a downstream service provider involved with a SOA application, and in response, automatically suspend particular processing within the application to prevent requests that may end up at the downstream service provider from entering the SOA application. The system management module may implement a circuit breaker module that maintains a circuit breaker structure specific to a downstream endpoint leading to a downstream service provider. Upon a triggering of a circuit breaker for a downstream endpoint, one or more upstream service providers are identified as associated with faulted traffic causing the triggering, and the system management module can automatically cause further traffic from these upstream service providers to be suspended.

Abstract: A system includes multiple devices connected in a chain-like structure, each device of the multiple devices coupled to at least one bus. A device of the plurality of devices includes a circuit configured to detect activity of a differential signal of a bus coupled to the device to cause a wakeup of the device in response to the detection.

Abstract: A communication apparatus of an embodiment of the present invention includes a storage temporarily storing data received via a wireless network from another communication apparatus that sends the data regarding feedback control at a fixed time interval and an arranger configured to read out and output at the fixed time interval the data stored in the storage and to arrange the data with the fixed time interval.

Abstract: A Direct Current (DC) Isolated-Parallel (Iso-Parallel or IP) Uninterruptible Power Supply (UPS) system and method for converting incoming AC power to DC power using several modules which are paralleled at their outputs yet fault isolated from each other. The DCIP UPS has two or more modules connected to a common IP Bus which operates at AC voltage and is disposed between a facility electrical distribution system and the facility's critical electrical loads which operate at DC voltage. The electrical distribution system receives power from a local utility, or from a standby power source when utility power is unavailable, and delivers AC power to the DCIP UPS input. The DCIP UPS converts the power to DC and delivers it to critical electrical loads associated with computer equipment or other devices using DC power.

Abstract: A method for data communication within an I2C system is provided. The method includes the steps of: a) generating a communication error code indicative of error status when data transmission from a master module to a slave module via an I2C bus fails; b) determining whether to retransmit the data to the slave module according to the communication error code; c) when the determination made in step c) is affirmative, determining whether a number of times of data retransmission(s) associated with the data reaches a predetermined number; d) when the determination made in step c) is affirmative, resetting the master module; and e) recording a communication error event according to the communication error code after step a).

Abstract: A chipset implemented in a server node of a server system and including an embedded management controller is disclosed. The chipset also includes a northbridge and southbridge. The embedded management controller collects inner-node information of the server node for server system management. The embedded management controller is coupled to a baseboard management controller, and the baseboard management controller is outside the server node and communicates with a remote console through network.

Abstract: The present invention realizes a functional safety of a multiprocessor system without tightly coupling processor elements. When causing a plurality of processor elements to execute the same data processing and realizing a functional safety of the processor element, there is adopted a bus interface unit that performs control of performing safety measure processing when the non-coincidence of access requests issued from the processor elements has been fixed, and of starting access processing responding the access request when these access requests coincide with one another.

Abstract: A mobile communications system according to an aspect of the present invention includes a control apparatus (100) arranged in a radio access network (20) and a policy supply system (200) arranged in a core network (10). The policy supply system (200) is configured to supply the control apparatus (100) with a first control policy used in control related to state transition of a mobile terminal (300) between a CONNECTED state and an IDLE state. The control apparatus (100) is configured to perform the control related to the state transition between the CONNECTED state and the IDLE state for the mobile terminal (300) based on the first control policy. This enables, for example, to reduce the number of signalings which are caused due to repetition of state transition (CONNECTED-IDLE transition) of the mobile terminal and are to be processed by the core network, based on the determination by the core network.

Abstract: An in-vehicle system for providing a driver with access to functionality of a mobile device that includes a head unit with an in-vehicle display for providing infotainment to the driver, software that configures the user interface with a graphical scheme native to the head unit, and a software interface by which the head unit can receive deep links from the mobile device. Deep links identify application contexts available within the mobile software applications, and are made available to a user from within in-vehicle software applications. When a user selects a deep link from within an in-vehicle software application, the deep link is followed and the appropriate application context is rendered by mobile device. The application context is then mirrored onto the in-vehicle display, where a driver can view and interact with it using mirroring technology.

Abstract: A fault-tolerant storage system includes a first strand comprising a first initiating device connected to a first expansion device of a first set of serially connected expansion devices, a second strand comprising a second initiating device connected to a first expansion device of a second set of serially connected expansion devices, and a plurality of zoning switches that each connect an expansion device in the first set of serially connected expansion devices to a corresponding expansion device in the second set of serially connected expansion devices. A computer program product and method executed by a computer corresponding to the above system are also disclosed herein.

Abstract: A system and method of distributed computation based upon a novel partitioning of computer networks. In the distributed computing system of the present invention, instructions are disseminated to select agents on a computer network, each of which is a member of at least one “path,” a path being an ordered set of one or more connected agents within the network. The computation is then performed by the agents along the path, and any results then returned. A computation to be performed is broken down into instructions executed on a unique ordered sequence of agents making up a path. This vastly increases the expressive power of a single network to be not only the sum of its parts, but the sum of all possible configurations of those parts on a graph. The basic components of the computing system are agents, probes and paths. The agents are interconnected forming a network and a path is an ordered sequence of agents.