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| Number | Title | Issue Date |
| 8156367 | I/O device switching method An I/O device management table that manages the types of I/O devices connected to an I/O switch is provided, and one or plural unallocated I/O devices are defined and registered as standby I/O devices. When a failure occurs in any of I/O devices, the I/O device mana... | 04/10/2012 |
| 8156369 | Remote copying management system, method and apparatus A management system for managing storage systems, having first correspondence information concerned with correspondence of copy pairs with copy groups as setting of remote copying of data in logical volumes of the storage systems, and second correspondence informati... | 04/10/2012 |
| 8151145 | Flow control timeout mechanism to detect PCI-express forward progress blockage A method for detecting lack of forward progress in a PCI Express includes a step in which a data flow measurement is received or performed. This data flow measurement provides the capacity of the connected Switch or Endpoint device to receive data packets from a Roo... | 04/03/2012 |
| 8145952 | Storage system and a control method for a storage system A storage system includes a storage device for storing data, a pair of adapters connected with the storage device, each of the adapters transmitting and receiving the data to and from the storage device respectively. The storage system includes a controller, connect... | 03/27/2012 |
| 8132058 | Auto regression tester for network-based storage virtualization system An apparatus and method for testing a network-based storage virtualization system. A tester is connected to a host side of a storage virtualization system. The tester provides test scripts to the storage virtualization system to test I/O and other operations. A sepa... | 03/06/2012 |
| 8117503 | Fast port failover in a network switch A network switch including a first port, a transfer circuit, and a redirect circuit. The first port is configured to exchange frames of data with a network, the first port configured to operate in a first mode and a second mode. The transfer circuit is configured to... | 02/14/2012 |
| 8117502 | Bisectional fault detection system An apparatus, program product and method logically divide a group of nodes and causes node pairs comprising a node from each section to communicate. Results from the communications may be analyzed to determine performance characteristics, such as bandwidth and prope... | 02/14/2012 |
| 8108732 | Apparatus and method to minimize performance degradation during communication path failure in a data processing system A method to minimize performance degradation during communication path failure in a data processing system, comprising a host computer, a storage controller, and a plurality of physical communication paths in communication with the host computer and the storage cont... | 01/31/2012 |
| 8108733 | Monitoring distributed software health and membership in a compute cluster Techniques for monitoring distributed software health and membership of nodes and software components operating in a compute cluster are disclosed. In one embodiment, each node in the compute cluster operates a watchdog monitoring component in addition to software o... | 01/31/2012 |
| 8103915 | Failure system for domain name system client A method performed by a domain name service client includes storing DNS entries in a local cache; sending a DNS query to another device to obtain an update to one of the DNS entries; determining whether a DNS response is received; and resetting a time-to-live (TTL) ... | 01/24/2012 |
| 8099633 | Circuit for testing a USB device using a packet to be measured controlled by test signals A USB test circuit for use in a USB device such as a system LSI with a USB function for testing the USB function generates and outputs a packet to be measured for a signal quality test. In the test circuit, a test signal including a test_sin signal carrying operatio... | 01/17/2012 |
| 8090976 | Error correction for digital systems An interface system is provided between a source component (210) and a destination component (220) having multiple parallel lines for transmitting data or parity bits (231-234, 251-253) and one or more spare lines (241-24... | 01/03/2012 |
| 8086903 | Method, apparatus, and computer program product for coordinating error reporting and reset utilizing an I/O adapter that supports virtualization A method, apparatus, and computer program product are disclosed in a shared processor data processing system for coordinating error reporting for and resetting of a physical I/O adapter that supports virtualization. The physical I/O adapter is virtualized by generat... | 12/27/2011 |
| 8078903 | Automatic load-balancing and seamless failover of data flows in storage media encryption (SME) Methods and apparatus for encrypting data are disclosed. In accordance with one embodiment, data path information identifying a data path is provided to one or more of a plurality of nodes in a cluster of nodes in a network, each of the nodes in the cluster being co... | 12/13/2011 |
| 8074101 | Systems and methods for handling path failures to active-passive storage arrays A computer-implemented method for handling path failures to active-passive storage arrays may include identifying a host system with multiple I/O paths to an active-passive storage array. The computer-implemented method may also include identifying a backup system o... | 12/06/2011 |
| 8065566 | Node device, control device, control method and control program A control device managing a plurality of nodes transmitting and receiving data containing an error correcting code, comprises means accepting, when any one of the nodes detects an uncorrectable error from the data containing the error correcting code, a signal trans... | 11/22/2011 |
| 8051336 | Recording method for video/audio data In order to provide a recording method for data which have been or are being generated at a data source in a time sequenced manner and are transmitted via a digital network to at least one recording device for storage, by means of which method the data can be reliab... | 11/01/2011 |
| 8051335 | Recovery from transitory storage area network component failures Lun communications between a storage server and a storage subsystem for a particular lun are assigned both a current path and an alternate path. Lun communications use the current path unless the current path is determined to be faulty. Path errors may result in the... | 11/01/2011 |
| 8051334 | Enabling SAS expander loops for increased fairness and performance The use of loops in SAS networks is enabled by designating ports connected to loop connections as table loop ports (TLPs). Under normal operating conditions, each TLP is blocked from receiving BCNs, appears to the expander to have nothing connected to it, and is mad... | 11/01/2011 |
| 8046640 | Safety-oriented automation system having automatic address recovery An industrial automation system for controlling the operating means of a technical process. The system includes fail-safe modules for interchanging process data with the operating means, i.e., actuating and measurement signals, stations having slots for modules, whi... | 10/25/2011 |
| 8042005 | Library apparatus, conveyance controller, and control method thereof A library apparatus includes, a drive for accessing the mobile medium, a discharge unit for discharging the mobile medium, and a conveyance controller for controlling a conveyance unit. The conveyance controller includes, a memory for storing process content when th... | 10/18/2011 |
| 8041987 | Dynamic physical and virtual multipath I/O Embodiments that dynamically manage physical and virtual multipath I/O are contemplated. Various embodiments comprise one or more computing devices, such as one or more servers, having at least two HBAs. At least one of the HBAs may be associated with a virtual I/O ... | 10/18/2011 |
| 8042004 | Diagnosing communications between computer systems Diagnosing communications between computer systems includes sending a message from a sending node to a receiving node. The receiving node detects an error in the receiving node receiving the message and captures the data regarding the error on the receiving. A diagn... | 10/18/2011 |
| 8042006 | Automatic system for power and data redundancy in a wired data telecommunications network Redundancy of data and/or Inline Power in a wired data telecommunications network from a pair of power sourcing equipment (PSE) devices via an automatic selection device is provided by providing redundant signaling to/from each of the pair of PSE devices, and coupli... | 10/18/2011 |
| 8037344 | Method and apparatus for managing virtual ports on storage systems A storage system is configured to create and manage virtual ports on physical ports. The storage system can transfer associations between virtual ports and physical ports when a failure occurs in a physical port or a link connected to the physical port so that a hos... | 10/11/2011 |
| 8032796 | Monitoring apparatus and method of monitoring by a carrier A monitoring apparatus of a carrier is disclosed that includes a managing part that assigns a related carrier path ID to network configuration information and manages the related carrier path ID, the related carrier path ID uniquely defining a path span between the ... | 10/04/2011 |
| 8032793 | Method of controlling information processing system, information processing system, direct memory access control device and program In a method of controlling an information processing system in which an information processing device is connected to each of a plurality of input/output ports provided in a routing device and having a first property or a second property, for conducting data transmi... | 10/04/2011 |
| 8032794 | Error processing method and information processing apparatus An error processing method processes an error generated on a bus of a CPU, by inputting a bus error that is generated on at least one of an instruction bus and a data bus of the CPU to the CPU by a bus error input part, counting the bus error by a bus error counter ... | 10/04/2011 |
| 8032795 | Method, system and computer program product for diagnosing communications A method for diagnosing communications includes sending a message from a sending node to a receiving node. The sending node detects an error in the receiving node receiving the message. A force log request is sent from the sending node to the receiving node, the for... | 10/04/2011 |
| 8028199 | Method and apparatus for determining a source of performance degradation in distributed systems transmission A method, device and computer product suitable for determining the source of failing to achieve a desired level of service quality in communication between at least two components in a distributed system is disclosed. The method comprises the steps of developing a m... | 09/27/2011 |
| 8024618 | Multi-client and fabric diagnostics and repair Systems, methods, and computer program products for network diagnostics and repair are provided. In some implementations, a method is provided. The method includes scanning a network for one or more network problems, identifying one or more problem, the identifying ... | 09/20/2011 |
| 8024619 | Method for recovering from PCI bus fault, recording medium and computer A bus fault detecting unit 21 detects a closed PCI bus, and outputs to an OS 1, a PCI card disconnection instructing signal that requires the OS 1 to disconnect PCI cards connected to the closed PCI bus and PCI buses downstream of this PCI bus. ... | 09/20/2011 |
| 8020035 | Expander circuit for a solid state persistent storage device that provides a plurality of interfaces to corresponding storage controllers A system includes a solid state persistent storage device, and a plurality of storage controllers to manage access of the solid state persistent storage device. An expander circuit is connected to the solid state persistent storage device and has a plurality of comp... | 09/13/2011 |
| 8015452 | Flexible bus architecture for monitoring and control of battery pack The present invention provides a control system which is used for a stacked battery of a plurality of battery packs. Each battery pack has a plurality of battery cells coupled in series. The control system is capable of reconfiguring communication among the battery ... | 09/06/2011 |
| 8015451 | Controlling an unreliable data transfer in a data channel Controlling an unreliable data transfer in a data channel from a transmitting unit to a receiving unit. A bypass mode or a buffer mode is activated depending on the error rate in the data channel. If bypass mode is selected, data packets are directly transferred in ... | 09/06/2011 |
| 7992048 | Computer system and method for performing failure detecting processing for a logical path Provided is a computer system including at least one host computer; and at least one storage system, characterized in that: the storage system has a disk drive and a disk controller, and provides a storage area of the disk drive as at least one logical unit; upon de... | 08/02/2011 |
| 7992047 | Context sensitive detection of failing I/O devices Methods for context sensitive detection of failing I/O devices sample and record a response time of an I/O device for each of a first plurality of time intervals to generate a first plurality of sampled and recorded response times, and to determine whether or not at... | 08/02/2011 |
| 7987392 | Differentiating connectivity issues from server failures A status of connectivity between servers of different sites (locations) is used to infer whether a network or a server failure has occurred such that data between the servers can be routed more efficiently reducing unnecessary network traffic due to duplicate messag... | 07/26/2011 |
| 7975180 | Method and apparatus for fault detection/isolation in metro ethernet service Apparatus and method of detecting a fault in a network service includes an Ethernet access network domain in which a heartbeat message is broadcast at a periodic interval by each of a plurality of edge devices associated with an instance of the network service. Each... | 07/05/2011 |
| 7954010 | Methods and apparatus to detect an error condition in a communication network Methods and apparatus to detect an error condition in a communication network are disclosed herein. An example method of detecting an error condition in a communication network includes collecting first metric data from a first endpoint device, the first metric data... | 05/31/2011 |
