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6578157 |
Method and apparatus for recovery of useful areas of partially defective direct rambus rimm components
A memory module using a plurality of partially defective RDRAM devices in combination to simulate a single, fully operational RDRAM device. Multiple partially defective RDRAM devices are configured...
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6571355 |
Fibre channel data storage system fail-over mechanism
A fibre channel system having a plurality of disk drives. Each one of the disk drives has a pair of redundant ports. A pair of sources of data is provided. The system includes a pair of fibre...
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6571353 |
Fail information obtaining device and semiconductor memory tester using the same
A semiconductor memory tester is provided. A memory controller inputs failed cell identification information. A memory specifies the location of a memory cell indicated by the information. A block...
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6567811 |
Method and system to merge volume groups on a UNIX-based computer system
Initially, a filesystem map is created, and the logical control volume block is copied outside the volume group. The initial logical control volume is deleted, and the disks are removed from the...
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6560673 |
Fibre channel upgrade path
The present invention involves hierarchical storage controllers which enable a scalable storage system. The scalable storage system is capable of causing a very large amount of discrete disk units...
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6553008 |
Multidirectional time-division multiplexing wireless data communications system
A multidirectional time-division multiplexing wireless data communications system can prevent erroneous data from being transmitted through a data communication line even when a bit error has...
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6546502 |
Information recording method and apparatus of optical disc
In case of recording the file 13 of the storage device 6 into the optical disc 3, such data to be recorded as being concerned about a deterioration of reading rate, when the data is...
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6546503 |
Synchronous semiconductor memory device capable of reducing test cost and method of testing the same
A match detection circuit detecting match of data outputted to a plurality of data terminals is provided on an input/output circuit part. In a test, the same result is written in two latches, and...
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6546504 |
System and method for providing streaming recording and playback of audio-video data
A system and method provide streaming recording and playback of audio-video (“A/V”) data to and from traditionally slow disc storage media such as DVD™-RAM or AS-MO discs. The system and...
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6543004 |
Method and apparatus for archiving and restoring data
A computer system includes a first storage device, a backup storage device, and a system controller. The first storage device has a default operating system and a customized operating system stored...
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6539463 |
Disk-array apparatus capable of performing writing process in high transmission speed and surely avoiding data loss
A disk-array apparatus comprises a plurality of disk-medium modules, a first through a fourth memory modules, and a director module connected to a host. The first and the third memory modules are...
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6532231 |
Arrangement for changing the destination of single link, single destination data messages
An arrangement and method for switching a single destination data channel to a different destination without losing any data messages. Such a switch is required, for example, when a switch is made...
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6532551 |
Data management method for backup memory
A backup memory has a plural number of pages (e.g., page 0 , page 1 . . . ) including machine-status data. Each page stores machine-status data such as the number of prints, machine usage...
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6526476 |
Defective data sector management system
a firm ware based technique related to managing defective data sector information in a disk drive. Specially, technique provides for a dynamic method by which the number of spare or served...
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6519720 |
Data transmission system
A sub-net operation with increased availability and reduced power consumption is achieved in a bus system with a plurality of stations ( 10, 11, 12 ) which are coupled to one another via a system...
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6502205 |
Asynchronous remote data mirroring system
Two data storage systems are interconnected by a data link for remote mirroring of data. Each volume of data is configured as local, primary in a remotely mirrored volume pair, or secondary in a...
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6502204 |
Library system storing removable storage media
A standard physical medium 1320 as loaded into library unit 1080 even in the absence of any load request from a host computer 1020 is regarded as a spare physical medium 1330 for use when...
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6499082 |
Method of transferring data from large capacity data storage device
A method for transferring data from a large capacity data storage device to a host machine. The method requires the attachment of a plurality of SRAM memory blocks to an optical disk reader. Each...
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6487636 |
Method and apparatus for mapping data in a heterogeneous disk array storage system
A RAID data storage system includes a heterogenous disk array coupled to a controller. The disk array provides a storage space that includes a first set of stipes each having at least “N”...
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6487623 |
Replacement, upgrade and/or addition of hot-pluggable components in a computer system
A computer system adapted for hot-pluggable components such as memory modules that may be replaced, upgraded and/or added without disturbing normal operation of the computer system. A failing...
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6484269 |
Data storage system and method with improved data integrity value calculation
A data storage system and data storage method providing data storage devices including a data integrity value generator, for allowing individual data storage devices to compute data integrity...
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6480971 |
Media library apparatus and method of controlling the media library apparatus
For each of a plurality of media that are to be simultaneously subjected to a data striping process, a management region is provided where data can be saved separately from an existing substitute...
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6480953 |
Method and apparatus for ensuring system configuration data structure coherency across multiple controllers in a data storage system
The present invention ensures system configuration data structure coherency across multiple controllers in a data storage system. To accomplish this, a controller that detects any change in the...
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6477662 |
Apparatus and method implementing repairs on a memory device
An on-chip testing device separately locates must-repairs or preferred-repairs in a row direction and column direction of a memory array. A row counter and a column counter are operated to index...
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6473868 |
Disc array connection system, detection method of malfunctioning device and recording medium having control program recorded thereon
A disc array connecting system in which a malfunctioning device can be identified easily to render it possible to shorten the time involved in identification processing. A switch circuit 12 in an...
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6467048 |
Apparatus, method and system for using cache memory as fail-over memory
A computer system having a main memory and a cache memory, the computer system uses portions of the cache memory to store information from defective main memory locations until the main memory can...
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6463512 |
Storage device, method of processing stored data, and image forming apparatus
The present invention aims at restoring backup data in a predetermined order and avoiding damage from being given to the system even when the backup data are destroyed. Flags Ferr and Feeprom and a...
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6463549 |
DEVICE AND METHOD FOR PATCHING CODE RESIDING ON A READ ONLY MEMORY MODULE UTILIZING A RANDOM ACCESS MEMORY FOR STORING A SET OF FIELDS, EACH FIELD INDICATING VALIDITY OF CONTENT OF A GROUP, AND FOR RECEIVING AN ADDRESS OF A MEMORY PORTION OF THE READ ONLY MEMORY
A device and a method for patching code residing on a ROM module, the device comprising a patch detect logic and a patch translation logic, the method comprising the steps of: (I) providing a set...
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6457139 |
Method and apparatus for providing a host computer with information relating to the mapping of logical volumes within an intelligent storage system
Method and apparatus directed to a computer system including a host computer and an intelligent storage system that stores data accessed by the host computer, the computer system including a...
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6446223 |
Storage system and method for controlling the same
A storage system having a plurality of rewritable removable media and a method for controlling that system are disclosed. The storage system has a controller that updates medium update count...
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6442711 |
System and method for avoiding storage failures in a storage array system
A higher reliable storage array system. A plurality of data storage devices store data; a spare storage device replaces one of the plurality of data storage devices; and a control unit controls an...
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6438706 |
On chip error correction for devices in a solid state drive
An error correction arrangement for a flash EEPROM array including a plurality of redundant array circuits, apparatus for sensing when a hardware error has occurred in a block of the flash EEPROM...
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6434711 |
Disk array apparatus that avoids premature declarations of faults
A disk array apparatus includes a detection unit, delay unit, instruction issue unit, first determination unit, and assignment unit. The detection unit detects a faulty magnetic disk device delayed...
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6425055 |
Way-predicting cache memory
An apparatus and method for accessing a cache memory. In a cache memory, an address is received that includes a set field and a partial tag field, the set field and the partial tag field together...
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6425092 |
Method and apparatus for preventing thermal failure in a semiconductor device through redundancy
Redundant chip sections held in standby are substituted for chip sections that are at risk of over heating based on certain sensor signals. When these signals are received operations of the chip...
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6425049 |
Disk array system and method of changing the configuration of the disk array system
A disk array system has a disk storage group, an array controller reading/writing data of the group, a disk interface connecting unit having a plurality of ports for connection with the controller...
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6418539 |
Continuously available computer memory systems
A highly reliable computer memory storage system that is divided into subsystems, each of which is provided in triplicate: a primary subsystem, a backup subsystem and a spare subsystem. Upon...
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6415355 |
Combined disk array controller and cache control method for parity generation mode and data restoration mode
Upon receiving an access command designated with a parity generation mode from a main controller upon update data transfer from a host apparatus, a cache controller reads out update data from that...
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6412082 |
Method and apparatus for selecting computer programs based on an error detection mechanism
An information processing apparatus performs predetermined processing by executing a computer program. A program memory stores two boot addresses #1 and #2, each of which serves as an address from...
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6408399 |
High reliability multiple processing and control system utilizing shared components
The present invention provides a system of computers where one is active and processing data while the others standby. Data generated by the system is stored on at least two external, shared...
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6408401 |
Embedded RAM with self-test and self-repair with spare rows and columns
A self-repair method for a random access memory (RAM) array comprises writing a value to the memory array, reading a value from the memory array and comparing the read and write values to identify...
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6404975 |
Video storage
Video data in the form of a plurality of digitised frames, is stored on a plurality of magnetic disks. Each image frame is striped across a plurality of disks and redundant parity information,...
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6397349 |
Built-in self-test and self-repair methods and devices for computer memories comprising a reconfiguration memory device
A reconfiguration memory device is provided associated with a main memory array. The reconfiguration memory device generates a spare address in real time corresponding to a faulty address. The...
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6381675 |
Switching mechanism and disk array apparatus having the switching mechanism
The present invention enables to obtain a data transfer at a high rate, at a reasonable cost, and with a high reliability. The disk array system according to the present invention includes: a...
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6378021 |
Switch control method and apparatus in a system having a plurality of processors
In an information processing apparatus having a crossbar switch, registers are provided for logical division of a connection of the crossbar switch into a plurality of groups, in order to allow a...
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6378038 |
Method and system for caching data using raid level selection
A method and system for storing data in a redundant array of inexpensive disks (RAID) data storage subsystem is disclosed. The RAID data storage subsystem includes a plurality of drives. The method...
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6378086 |
Method and system for recovering a computer system from a loadsource located at a remote location
A method for recovering a computer system from a loadsource direct access storage device located at a remote location. In accordance with the method and system of the present invention, after a...
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6367030 |
Address conversion circuit and address conversion system with redundancy decision circuitry
An address conversion circuit is disclosed for converting a logical address to a physical address and outputting the physical address to a memory, the memory including a normal memory array and a...
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6351799 |
Integrated circuit for executing software programs
The integrated circuit executes software programs. The electronic components of the integrated circuit and/or the electrical connections between them can be selectively broken and/or created. The...
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6347359 |
Method for reconfiguration of RAID data storage systems
A method for reconfiguration of a disk drive array is provided. For the method of the present invention, an array controller in a disk drive array examines the original configuration of the disk...
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