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6766478 |
Protective circuit for protecting hard disk data
A protective circuit for protecting hard disk data comprises: a first HD coupling device connected to a hard disk port of motherboard; a second HD coupling device connected to a hard disk; a HD...
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6766469 |
Hot-replace of memory
A method of replacing a memory module in a computer system. Specifically, a method for replacing a memory module in a segment of a redundant memory system, without powering-down the memory system.
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6765863 |
Network system
A network system composed of a master network synchronization device and a slave network synchronization device. A master network synchronization device transmits hop count information. A slave...
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6766467 |
Method and apparatus for pausing a send queue without causing sympathy errors
A method and apparatus for pausing a send queue while preventing sympathy error from propagating through a SAN fabric system is provided. The method and apparatus place a send work queue in an...
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6757838 |
Hardware independent implementation of computer system BIOS recovery
Either a backup BIOS or a main BIOS in a non-volatile memory is used to fully boot a computer system, depending on the validity of the main BIOS, successful prior booting using the main BIOS, or...
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6757848 |
Recovery of user data from partially incorrect data set in tape data storage system
Herein disclosed a method and apparatus for recovering user data from a data set comprising a plurality of sub data sets, wherein each data set contains a valid data length information, which is...
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6754724 |
Kernel creator for creating kernel capable of executing entertainment processing using a peripheral device
An entertainment apparatus includes a storage unit that stores outside a kernel a device driver for a peripheral device. To make the peripheral device operable, a CPU causes an I/O processor to...
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6748474 |
Midplane apparatus
A chassis, in the form of a midplane design holds equipment that provides communication services. The midplane design enables cables to be attached to modules secured to the back of the midplane....
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6745241 |
Method and system for dynamic addition and removal of multiple network names on a single server
A method and apparatus for configuring a server in a distributed data processing system is provided. The server receives a request for a function that specifies a first server name and a second...
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6745340 |
Method and system for recovering data from an optical write once read many (WORM) medium with both directory entries damaged
A file recovery logic implemented within a data processing system is disclosed that recovers data from a file on a write once read many (WORM) medium when the file cannot be accessed due to the...
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6745304 |
Method and device for storing computer data with back-up operations
A method of storing data processed during the operation of a data processing system, stored in the form of files in main storage means of the system and backed up by copying it to auxiliary storage...
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6742136 |
Redundant devices in a process control system
A method of and a device for implementing redundancy in a process control network using a pair of redundant devices, such as redundant I/O devices, communicatively connected to a segment of the bus...
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6728897 |
Negotiating takeover in high availability cluster
The invention provides a method and system in which a node in a 2-node high availability cluster can declare itself impaired. In doing so, an impaired node can self diagnose or request another node...
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6728898 |
Producing a mirrored copy using incremental-divergence
Producing a mirror copy using incremental-divergence is performed in a computer system in which write requests are each associated with a reference label. A mirror set may be restored to a state in...
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6725394 |
Media library with failover capability
A process/method for controlling a digital data storage unit including a multiplicity of storage media slots for receiving media storage units, a plurality of media storage units loaded in some of...
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6725312 |
Bus architecture for high reliability communications in computer system
An industrial PC-compatible computer system for telecommunications applications is described. The computer system includes a plurality of peripheral boards, each of which includes a peripheral...
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6725295 |
Multi-path computer system
In a multi-path computer system, a host apparatus and devices are connected via a plurality of paths, recorded therein. From channel adapters of the devices, device information of said devices,...
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6721901 |
Method and system for recovering mirrored logical data volumes within a data processing system
A method and system for recovering mirrored logical data volumes within a computer system after a system failure is disclosed. A computer system includes mirrored logical volumes that can be...
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6721906 |
Disk apparatus and control method therefor
In a novel method for controlling a disk apparatus having an interface, command storage, and data storage, one or more commands are received from an external apparatus via the interface, and the...
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6715100 |
Method and apparatus for implementing a workgroup server array
A method and apparatus for implementing a workgroup server array ideal for web-based Intranet, Extranet and Internet applications. The inventive server array comprises a plurality of team/workgroup...
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6715104 |
Memory access system
A system for accessing a memory organized in memorization subsystems or memory blocks, e.g. standard Dual In-line Memory Modules, wherein the words to be stored are split into unitary elements so...
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6715098 |
System and method for fibrechannel fail-over through port spoofing
In a system for appliance back-up, a primary appliance is coupled to a network, whereby the primary appliance receives requests or commands and sends a status message over the network to a standby...
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6711702 |
Method for dealing with peripheral units reported as defective in a communications system
The method defines steps and sequences for dealing with peripheral units reported as defective in a communications system. A repetition counter for counting a number of start-up attempts is...
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6708283 |
System and method for operating a system with redundant peripheral bus controllers
The inventive system essentially hides redundant paths to the peripheral devices from the operating system, by reporting a single “virtual” path to the peripheral busses over PCI bus 0 . The...
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6704226 |
Semiconductor memory device having row repair circuitry
Our semiconductor memory device has row repair circuitry by which defective wordlines are substituted with redundant wordlines regardless of locations of cell array blocks, the redundant wordlines...
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6704849 |
Process, data processing device, service provision server, back-up server and program modules for backing-up data
The present invention relates to a process for backing-up data stored on storage means (MEMA 1 , MEMA 2 , MEMA 3 ) of a data processing device (TERA). The invention further relates to a data...
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6701451 |
Selective correction of data errors
A method for scanning a mass-storage device in communication with a global memory includes allocating a scan buffer in the global memory for placement of information descriptive of any errors found...
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6701450 |
System backup and recovery
A tape drive operates as a bootable device for a PC. In a first mode, the drive operates as a normal tape drive. In a second mode, the drive emulates a bootable CD-ROM drive. Application software...
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6701465 |
Method and apparatus for management of defect information in a disk system
In a defect information management method and apparatus of the present invention, a defect list contains a sequence of sets of first defect items with respective offset addresses thereof, each...
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6697958 |
Method and apparatus for driving a recording medium, method and system for recording and reproducing information, and information supplying medium
A disk drive for recording information on and reproducing information from a hard disk drive. The CPU of a host device controls the maximum allowable number of retries, or the maximum period of...
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6687850 |
Disk drive for storing sector-reconstruction sectors and for storing a sector-reconstruction status in sectors distributed around a disk
A disk drive is disclosed comprising a disk, a head, and an actuator for actuating the head radially over the disk. The disk comprises a plurality of tracks, wherein each track comprises a...
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6687849 |
Method and apparatus for implementing fault-tolerant processing without duplicating working process
Systems and methods for implementing a memory-efficient fault tolerant computing system are provided. A generic backup process may provide fault tolerance to multiple working processes. The backup...
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6683602 |
Display control apparatus and electronic appliance
A segment terminal is structured to function as a data input terminal and a data output terminal in a manner that they can be switched from one to the other, and a memory cell formed from a...
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6681339 |
System and method for efficient failover/failback techniques for fault-tolerant data storage system
Structure and method for efficient failover and failback techniques in a data storage system utilizing a dual-active controller configuration for minimizing a delay in responding to I/O requests...
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6678839 |
Troubleshooting method of looped interface and system provided with troubleshooting function
In a system using a looped interface, a faulty device and a disconnected location respectively causing a link fault are specified. Plural devices 200 are connected to the looped interface 120 ...
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6675317 |
Method and system for determining erase procedures run on a hard drive
A method and system for erasing a drive of a computer system is disclosed. The method and system include scrubbing the drive and writing a message to a portion of the drive such that the message...
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6675242 |
Communication bus controller including designation of primary and secondary status according to slot position
A communication system with a plurality of interface slots includes control logic for determining and designating the status of one or more controller cards inserted in one of the slots such that:...
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6675316 |
Method and system for recovery of the state of a failed CPU/cache/memory node in a distributed shared memory system
A method of (and system for) recovering the state of a failed node in a distributed shared memory system, includes directing a flush of data from a failed node, and flushing the data from the...
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6668336 |
Ruggedized block device driver
A ruggedized file system, which provides ruggedness to non-volatile storage media at the device driver level. The ruggedized block device driver implementation provides ruggedness at the device...
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6665812 |
Storage array network backup configuration
A redundant communication network includes servers having production servers and a backup server; a storage system including a plurality of production volumes for storing data and a corresponding...
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6665813 |
Method and apparatus for updateable flash memory design and recovery with minimal redundancy
A method and an apparatus is presented for updating flash memory that contains a write protected code, a first copy of rewritable recovery code, a second copy of rewritable recovery code, and a...
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6662323 |
Fast error diagnosis for combinational verification
A fast error diagnosis system and process for combinational verification is described. The system and process localizes error sites in a combinational circuit implementation that has been shown to...
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6658587 |
Emulation of persistent group reservations
Method for emulating persistent group reservations on non persistent group reservation-compliant devices, apparatus to perform the method, and computer-readable storage medium containing...
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6654912 |
Recovery of file system data in file servers mirrored file system volumes
The invention provides a method and system for recovery of file system data in file servers having mirrored file system volumes. The invention makes use of a “snapshot” feature of a robust file...
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6651184 |
Isochronous transfer mode on a universal serial bus with error correction algorithms
The present invention relates to the attachment of latency-intolerant devices, such as CD-RW devices to a well supported high bandwidth interface on a host computer. A preferred high bandwidth...
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6647474 |
Remote data mirroring system using local and remote write pending indicators
A primary data storage system is linked to a geographically remote secondary data storage system for automatically maintaining a remote copy of the data in the primary storage. The primary data...
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6647452 |
Automatic recovery of non-responsive peripheral device by apparent disconnect and reconnect
A change-over switch is disposed on a line of a peripheral device. The change-over switch is controlled by a control unit provided within a USB controller. When a host discontinues a polling...
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6640312 |
System and method for handling device retry requests on a communication medium
A system and method for transferring data over a communications medium. A host is coupled to a device through a serial bus lacking error handling capabilities, such as an IEEE 1394 bus. The host...
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6636984 |
System and method for recovering data from mirror drives following system crash
A system and method for recovering data from parallel mirror drives following a system crash. During a parallel write to a mirrored disk array, it is unknown which of the disks comprising the disk...
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6636933 |
Data storage system having crossbar switch with multi-staged routing
A memory system having a backplane with a plurality of receiving slots. Each one of the slots has electrical contacts for providing an indication of Such one of the slots. Each one of the slots has...
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