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7620465 |
Fault-tolerant node architecture for distributed systems
A distributed architecture system including a plurality of nodes operatively coupled together by a bus. Each node includes a main controller configured to provide data to the bus and to an...
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7617413 |
Method of preventing erroneous take-over in a dual redundant server system
The present invention discloses a method for preventing erroneous take-over in a redundant server system, and the method is used for a server system having a primary server for continuously...
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7613961 |
CPU register diagnostic testing
One embodiment disclosed relates to a method of compiling a program to be executed on a target central processing unit (CPU). The method includes opportunistically scheduling diagnostic testing of...
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7613948 |
Cache coherency during resynchronization of self-correcting computer
A fault-tolerant computer uses multiple commercial processors operating synchronously, i.e., in lock-step. In an exemplary embodiment, redundancy logic isolates the outputs of the processors from...
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7613597 |
Non-intrusive method for simulation or replay of external events related to an application process, and a system implementing said method
This invention relates to a method for replaying, from a log file, events in a process belonging to a software application. This method in particular relates to internal events within a process...
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7610510 |
Method and apparatus for transactional fault tolerance in a client-server system
Method and apparatus for transactional fault tolerance in a client-server system is described. In one example, output data generated by execution of a service on a primary server during a current...
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7610405 |
Router software upgrade employing redundant processors
Systems and methods for replacing software controlling active routers while minimizing impact on network operation are provided by virtue of one embodiment of the present invention. The software...
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7603581 |
Remote copying of updates to primary and secondary storage locations subject to a copy relationship
Provided are a method, system, and program for remote copying of updates to primary and secondary storage locations subject to a copy relationship. A first copy relationship is established between...
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7603580 |
Redundant manager for a storage system
A method for managing activity of a data storage system, including at least partly managing and performing an operator interaction with the storage system using a first processing system, and...
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7600055 |
Apparatus, system, and method for firmware update of redundant controllers
An apparatus, system, and method are disclosed for updating firmware to a plurality of memory devices residing on disparate controllers wherein each controller includes an identical communication...
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7596648 |
System and method for information handling system error recovery
An information handling system recovers from memory errors associated with a memory unit that supports operation of an SMI handler by using another memory unit to support operation of the SMI...
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7594023 |
Data carousel receiving and caching
Data objects are sent using a data carousel and forward error correction. This involves segregating a file into groups, wherein each group represents k data blocks. From the k data blocks of each...
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7590886 |
Method and apparatus for facilitating device redundancy in a fault-tolerant system
Method and apparatus for facilitating device redundancy in a fault tolerant system is described. One aspect of the invention relates to common redundancy for a set of devices in a redundancy group....
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7590885 |
Method and system of copying memory from a source processor to a target processor by duplicating memory writes
A method and system of copying memory from a source processor to a target processor by duplicating memory writes. At least some of the exemplary embodiments may be a method comprising stopping...
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7587632 |
High availability, high performance software component architecture
A high availability, high performance software component architecture includes a primary configuration and at least one secondary configuration to take over from the primary configuration in the...
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7584256 |
Replicating message queues between clustered email gateway systems
A method of “stateful failover” is provided that allows email gateway systems in a cluster to deliver email messages that have been accepted for delivery by a member of the cluster, but has...
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7577871 |
Computer system and method having isolatable storage for enhanced immunity to viral and malicious code infection
An apparatus and method of supporting the backup and recovery of a computing device. The computing device typically includes both a user computing environment and a supporting environment which...
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7577870 |
Method and system for controlling command execution
Method and system for performing a task in a control system is provided. The method includes, transmitting a command to a governing agent; re-transmitting the command from the governing agent to a...
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7577866 |
Techniques for fault tolerant data storage
Described are techniques for performing data recovery processing for two failed devices included in a set of devices. It is determined whether the two failed devices are each one of the data...
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7577812 |
Storage controlling unit
Provided is a storage controller capable of changing a system configuration with scalability. A storage controller blade of the storage controller includes: interface units that each connect to one...
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7577728 |
Controlling method, computer system, and processing program of booting up a computer
A computer system including: a plurality of computers having at least one first computer and at least one second computer; a management computer adapted to manage the plurality of computers; and a...
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7571347 |
Method and apparatus for providing fault-tolerance in parallel-processing systems
A system that provides fault tolerance in a parallel processing system. During operation, the system executes a parallel computing application in parallel across a subset of computing nodes within...
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7571268 |
Consistent updates across storage subsystems coupled to a plurality of primary and secondary units at selected times
Provided are a method, system, and article of manufacture, wherein a primary control unit sends a selected time to a plurality of secondary control units. Clocks are periodically synchronized at...
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7568131 |
Non-intrusive method for logging external events related to an application process, and a system implementing said method
This invention relates to a method for logging events, in particular external, occurring in an application in a multi-computer environment, operating non-intrusively and transparently vis-à-vis...
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7562253 |
Segmented protection system and method
A segmented protection system and method. The invention comprises a plurality of Processing Modules arranged in series along a Protection Bus. A number of Protection Groups may be formed along the...
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7562126 |
Agent for communication between a manager and at least one resource, and tool library for creating the agent
The agent for communication between a manager ( 20 ) and at least one resource ( 30 ) comprises a protocol core ( 111 ) created automatically from a formalized description of the resource ( 30 ),...
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7552359 |
Computer system and method for dealing with errors
A computer system includes a plurality of systems configured to be connected to each other by links and to operate synchronously each other. Each of said plurality of systems includes a fault...
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7546325 |
Backup system, file server and backup method
When any file sharing server among a plurality of file sharing servers configuring a virtual file system receives a backup requests from a backup server, the file sharing server that received the...
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7546171 |
Method, apparatus and system for recovery of a controller with known-compatible configuration and run-time data
A method includes obtaining current structural information describing a current structure of a process control system and retrieving from a checkpoint file stored structural information describing...
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7543180 |
Enhancing throughput and fault-tolerance in a parallel-processing system
One embodiment of the present invention provides a system that enhances throughput and fault-tolerance in a parallel-processing system. During operation, the system first receives a task. Next, the...
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7543174 |
Providing high availability for an application by rapidly provisioning a node and failing over to the node
In one embodiment, a method includes detecting that an application in a first node is to failover; provisioning a second node to execute the application responsive to the detecting; and failing the...
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7539898 |
Method of increasing system availability by assigning process pairs to processor pairs
A method is provided of assigning processors in a multiprocessor environment to a plurality of processes that are executed in the multiprocessor environment. Each process has a process pair defined...
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7539897 |
Fault tolerant system and controller, access control method, and control program used in the fault tolerant system
The present invention has been made to realize access processing performed in accordance with synchronous/asynchronous state between processors in a fault tolerant system. In two systems that...
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7539755 |
Real-time heartbeat frequency regulation system and method utilizing user-requested frequency
A system and method for regulating real-time the heartbeat frequency of the host according to the user-requested frequency, wherein the heartbeat frequency of the host is regulated through the...
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7536598 |
Computer system capable of supporting a plurality of independent computing environments
A method for a computer repairing itself to an operational status at any time during operation, the method comprising the computer-executed steps of: booting from a first hard disk drive boot...
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7536589 |
Processing apparatus
A processing apparatus includes a plurality of operation units each of which performs a given operation for an input operand in accordance with an operating instruction and outputs an exception...
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7536587 |
Method for the acceleration of the transmission of logging data in a multi-computer environment and system using this method
This invention relates to a method for the transmission of logging data, within a cluster of computers, enabling all or part of the events constituting the running of a user process to be memorized...
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7533297 |
Fault isolation in a microcontroller based computer
A method and data processing system for isolating a faulty component in a computer. A first microcontroller detects a fault in a component of a computer. Responsive to detecting the fault, the...
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7533296 |
Method for optimizing the transmission of logging data in a multi-computer environment and a system implementing this method
This invention relates to a method for the transmission of logging data, from a primary node to a secondary node within a cluster of computers. The method applies in particular to logging data...
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7529897 |
Generating and using checkpoints in a virtual computer system
To generate a checkpoint for a virtual machine (VM), first, while the VM is still running, a copy-on-write (COW) disk file is created pointing to a parent disk file that the VM is using. Next, the...
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7526639 |
Method to enhance boot time using redundant service processors
A computer implemented method and system for enhancing boot time of a computer system. Initial program load firmware is initialized on a plurality of service processors. The plurality of service...
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7519857 |
Method, apparatus, and system for a software based business continuity solution for a computing environment
A heterogeneous and cost effective software based business continuity framework for integrated applications in a computing environment. In one example embodiment, this is accomplished by...
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7519856 |
Fault tolerant system and controller, operation method, and operation program used in the fault tolerant system
There is provided a fault tolerant system capable of adequately performing error processing, synchronization processing, and resynchronization processing for realizing a fault tolerant function in...
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7512837 |
System and method for the recovery of lost cache capacity due to defective cores in a multi-core chip
A method for recovering lost cache capacity in a multi core chip having at least one defective core including identifying the cores contained in the chip that are viable cores and identifying at...
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7512836 |
Fast backup of compute nodes in failing midplane by copying to nodes in backup midplane via link chips operating in pass through and normal modes in massively parallel computing system
A method and apparatus for fast backup of a set of compute nodes to save the state of the software in a parallel computer system. A fast backup mechanism in the service node of the computer system...
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7509528 |
Transaction bundling for improved redundancy
A method is provided for simplifying maintenance of synchronicity between an active control system and a standby control system. As interdependent software modules on the active control system...
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7509527 |
Collection of operation information when trouble occurs in a disk array device
A disk array device has: a CM separating part that, when abnormality occurs in a CM, separates the CM in which the abnormality has occurred from a storage system after write of CM operation...
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7502960 |
Method and apparatus for managing access to volumes of storage
One embodiment is directed to a method in a computer system including a host computer and at least one storage system including first and second storage volumes, the host computer including at...
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7502959 |
Error correction apparatus, systems, and methods
A system comprises a non volatile memory and a plurality of processors. The non volatile memory stores an error handling routine. Each processor of the plurality of processors accesses the error...
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7502954 |
High availability data storage system
A data storage system includes a disk drive array including a plurality of disk drives; a first storage processor for controlling the operation of the data storage system; a second storage...
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