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6131169 |
Reliability of crossbar switches in an information processing system
An information processing apparatus includes a crossbar switch having a plurality of switching circuits for data transfer; connection lines having address data transfer paths of m-bit unit...
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6128555 |
In situ method and system for autonomous fault detection, isolation and recovery
A fault identification, isolation and fault recovery system autonomously controls spacecraft operational systems. A fault detection and isolation module monitors the operational systems, identifies...
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6128750 |
Fail-over switching system
A recovery method for use in a data storage system in which a plurality of data storage devices are connected to each of two communication paths. A switch may route requests to either of the two...
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6119245 |
Semiconductor storage device and method of controlling it
The aim is to improve reliability and life of a semiconductor storage device using memory elements for which deterioration is a problem. In a semiconductor disk device equipped with a flash memory...
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6115788 |
Multi-drive array with improved data transfer rate performance
A method and apparatus are disclosed for improving data transfer rate performance in a multi-drive array configured as a redundant array of inexpensive discs (RAID). The array comprises at least...
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6115828 |
Method of replacing failed memory cells in semiconductor memory device
A memory having a plurality of memory cells and a plurality of redundant memory cells accesses a redundant memory cell in lieu of a failed memory cell. The memory is tested for failed memory cells....
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6105146 |
PCI hot spare capability for failed components
A system management module (SMM) for a host server system includes a system management processor (SMP) connected to a system management local bus. The system management local bus connects to the...
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6098119 |
Apparatus and method that automatically scans for and configures previously non-configured disk drives in accordance with a particular raid level based on the needed raid level
The present invention pertains to an apparatus and method for automatically configuring disk drives connected to a RAID controller. The automatic configuration mechanism is able to generate a full...
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6092169 |
Apparatus and method for storage subsystem drive movement and volume addition
In a computer system there is a storage subsystem and an array controller circuit controlling an array of hard drives in the storage subsystem. Upon powering the storage subsystem, the array...
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6088815 |
Automatic data recovery for a duplex pair
A method and system for the automatic data recovery for a duplex pair is provided. The preferred embodiment includes the discovery of lost data on the first subsystem. A copy of the lost data is...
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6085333 |
Method and apparatus for synchronization of code in redundant controllers in a swappable environment
Methods and associated apparatus for automatically synchronizing the operating code between a plurality of controllers. In a first embodiment after the spare controller is swapped into the storage...
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6085334 |
Method and apparatus for testing an integrated memory device
A method of memory array testing that detects defects which are sensitive to environmental conditions. A repair signature is generated reflecting the repair state of the memory. A memory device is...
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6073252 |
Data processing system with memory patching and method thereof
A method and apparatus for providing memory patching in a data process system (5). In one embodiment, access control register (32), found in protection registers (20), contains six fields...
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6065134 |
Method for repairing an ASIC memory with redundancy row and input/output lines
A method provides an on-chip repair technique to fix defective row or I/O memory lines in an ASIC memory array with redundancy row or I/O memory lines. The method employs progressive urgency and...
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6061761 |
Method for exchanging logical volumes in a disk array storage device in response to statistical analyses and preliminary testing
Load balancing of activities on physical disk storage devices is accomplished by monitoring reading and writing operations to logical volumes on the physical disk storage devices. A list of...
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6061807 |
Methods systems and computer products for error recovery of endpoint nodes
Methods, systems and computer program products are provided for error recovery in a network having a first application associated with a first endpoint node and a second application associated with...
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6058454 |
Method and system for automatically configuring redundant arrays of disk memory devices
A method and system for autoconfiguring redundant arrays of memory storage devices contained within receptacles having one or more slots containing hardware sufficient to accept and electrically...
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6058489 |
On-line disk array reconfiguration
A system for performing on-line reconfiguration of a disk array in which a source logical volume is reconfigured to a destination logical volume. Disk array configuration is invoked if a new...
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6052767 |
Semiconductor device having redundant memory cell arrays and serially accessing addresses
In order to prevent a delay in the judgement of a judging result obtained by determining whether a memory cell specified by address signals supplied serially from the outside is a defective memory...
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6052759 |
Method for organizing storage devices of unequal storage capacity and distributing data using different raid formats depending on size of rectangles containing sets of the storage devices
A Redundant Array of Independent Disks (RAID) system that is adaptable to host Input/Output traffic, wherein the RAID configuration is hidden from the host computer, and wherein the system uses...
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6052764 |
Computer data restoration assembly and associated method
An assembly, and an associated method, that facilitates restoration of data to a computer data storage subsystem subsequent to failure and repair of the subsystem. An identification indicia memory...
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6044416 |
Configurable first-in first-out memory interface
A first-in first-out (FIFO) memory interface is provided by coupling an input register and an output register to a conventional static random access memory (SRAM). The registers and SRAM are...
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6041421 |
Storage apparatus system
In order to make maintenance work of a storage apparatus system having redundant data easy, it is desirable to set a storage medium group sharing common redundant data at locations that can be...
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6041420 |
Multi-volume audit trails for fault tolerant computers
A fault tolerant computer system distributes audit trail files containing audit records, across an arbitrary number of disk volumes. After one audit trail file becomes full, audit records are...
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6038633 |
System and method for providing a dual interrupt mechanism to designate the occurrence and termination of an event
A system and an associated method which provides a dual interrupt mechanism to designate the occurrence and termination of an event. In a computer system employing redundant components, upon...
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6035373 |
Method for rearranging data in a disk array system when a new disk storage unit is added to the array using a new striping rule and a pointer as a position holder as each block of data is rearranged
In a disk array system, such as a RAID system, when disks are added thereto, this invention rearranges data without requiring a back-up of the stored data. When new data storage units are added...
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6032217 |
Method for reconfiguring containers without shutting down the system and with minimal interruption to on-line processing
The system enables on-line container reconfiguration with minimal interference to the on-line processing by blocking all incoming I/O requests into the container drivers. The drivers queue the...
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6023758 |
Method and processor for changing program by replacing instruction stored in ROM with predetermined value to be interpreted as an instruction
According to the present invention, a method for changing a program including a plurality of instructions in a processor having a ROM for storing the program therein is provided. The method...
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6021509 |
Method and system for rebuilding log-structured arrays
A method for rebuilding contents of a malfunctioned direct access storage device within a log-structured array is disclosed. In accordance with the method and system of the present invention, each...
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6012149 |
Computer system with polymorphic fault processing
A computer system includes a main processor and a supervisory processor. The main processor provides status signals when a fault condition exists and responds to control signals for fault recovery....
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6009500 |
Replacement of erroneous firmware in a redundant non-volatile memory system
The original firmware of a computing device is stored in a fixed non-volatile ROM-type memory while any subsequently issued replacement firmware correcting or upgrading erroneous firmware contained...
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6006308 |
Removable library media system utilizing redundant data storage and error detection and correction
A library storage system is implemented to comprise a redundant array of inexpensive libraries (RAIL). The system includes removable storage media which may be logically configured into groups...
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6000010 |
Method of increasing the storage capacity of a level five RAID disk array by adding, in a single step, a new parity block and N--1 new data blocks which respectively reside in a new columns, where N is at least two
The storage capacity of a Level Five RAID array on an initial set of disks is expanded by the steps of: A) adding to the rows of the array, new data blocks but no parity blocks which reside on an...
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5996046 |
Parity generation system for generating new parity using old data in temporary storage without accessing main disk storage of disk drive
In a computer system having a host system including a plurality of disk devices, a CPU, a main memory and a disk control circuit for controlling the disk devices, a host CPU executes a program unit...
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5991852 |
Cache ram using a secondary controller and switching circuit and improved chassis arrangement
A memory system including a main memory such as a cache memory and a shadow or back-up cache memory in conjunction with a write cache is disclosed. The shadow memory is coupled to the same data bus...
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5991894 |
Progressive redundancy transmission
A method to recover lost data in a piece of information transmitted from a number of server computers to a client computer. The method includes the steps of transmitting by the server computers a...
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5987623 |
Terminal mapping apparatus
A memory module comprises a plurality of memory chips, data input/output terminals, and switching means. One word in a memory chip comprises a plurality of bits, and each memory chip includes a...
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5987632 |
Method of testing memory operations employing self-repair circuitry and permanently disabling memory locations
A test method for a memory device wherein failures that may only occur under specified worst-case conditions are converted to hard functional failures. These locations are subsequently detected and...
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5978931 |
Variable domain redundancy replacement configuration for a memory device
A fault-tolerant memory device provided with a variable domain redundancy replacement (VDRR) arrangement is described. The memory device includes: a plurality of primary memory arrays; a plurality...
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5974503 |
Storage and access of continuous media files indexed as lists of raid stripe sets associated with file names
A continuous media file is comprised of stripe sets over disk drives in one or more RAID sets. In a preferred embodiment, the RAID set includes n disk drives. The data storage of each disk drive in...
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5968184 |
Maintenance command structure and execution
A method and appartus maintain a disk drive system in a more reliable and simplified manner. Maintenance commands directed to logical volumes of the physical disk drive units are configured to...
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5961653 |
Processor based BIST for an embedded memory
An integrated chip having a DRAM embedded in logic is tested by an in-situ processor oriented BIST macro. The BIST is provided with two ROMS, one for storing test instructions and a second, which...
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5953216 |
Method and apparatus for replacing a defective integrated circuit device
An apparatus and method for operatively substituting a replacement device for a defective component in an electrical assembly. The apparatus preferably includes a first primary site adapted to...
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5948057 |
Method for computer-supported matching of a number of data copies of a stored data file wherein changes in the data copies are also stored in protocol files respectively allocated to the data copies
In a method for the computer-supported matching of a number of data copies of a stored data file stored in at least one computer, in the reintegration of a number of data copies that were changed...
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5944838 |
Method for fast queue restart after redundant I/O path failover
A redundant storage control module (also referred to as RDAC or multi-active controller) maintains a queue of pending I/O requests sent for processing via a first asynchronously operating I/O path....
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5941994 |
Technique for sharing hot spare drives among multiple subsystems
A data processing system that includes an improved architecture for providing hot spare storage devices. Specifically, the data processing includes a bus that is connected to one or more computer...
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5935258 |
Apparatus for allowing data transfers with a memory having defective storage locations
A memory fault correction system enables data to be written to and read from memory devices having a relatively large number of defective storage locations. For each address of the memory device,...
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5925138 |
Method for allowing data transfers with a memory having defective storage locations
A memory fault correction system enables data to be written to and read from memory devices having a relatively large number of defective storage locations. For each address of the memory device,...
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5920257 |
System and method for isolating an outage within a communications network
A system and method for isolating an outage within a communications network comprising a database containing the configuration of switching elements within a network and a plurality of instructions...
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5918000 |
Data transfer control device and method for switching memory regions between storage devices when accessing is halted
A data transfer control device and controlling method in which data on a storage medium is read continuously. The data transfer control device includes M storage units each for storing respectively...
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