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7206947 |
System and method for providing a persistent power mask
A system and method is provided to allow a computer network system to keep a device in a powered off state over a power cycle. A service processor stores the power state information or power mask...
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7206953 |
Asynchronous fault-tolerant enclosure services interface
The present invention provides method, interface and computer-readable medium for enabling enclosure services in a computer system including a multi-device enclosure generally remote from a host...
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7206826 |
Configuration recovery after gateway failure
User connection sessions with a gateway in a computer network are preserved even after a temporary failure of the gateway. User status information is stored in a status table in a RADIUS server...
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7203862 |
Methods for controlling storage devices controlling apparatuses
A storage device controller including: channel control portions each including a circuit board on which a file access processing portion for receiving file-by-file data input/output requests sent...
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7203861 |
Method and system for remotely backing up a computer memory utilizing a global communications network
Embodiments of the present invention relate to a method and system for remotely backing-up computer memories utilizing a global communications network. An embodiment of the present invention...
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7203135 |
Disk array system and method for controlling disk array system
A disk array system having first and second housings and a controller for controlling the first and second housings. Fiber channel hard disk drives are received in the first housing, and serial ATA...
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7203796 |
Method and apparatus for synchronous data mirroring
A synchronous data mirroring technique includes a log forwarding process and a consistency point (CP) process. During log forwarding, a source storage server receives write requests from clients,...
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7203720 |
Web server hit multiplier and redirector
A method of analyzing a resource leak on a first web server uses a second web server. A first HTTP request message is received from a client at a first Web server and includes an identifier of an...
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7200726 |
Method and apparatus for reducing network traffic during mass storage synchronization phase of synchronous data mirroring
A source storage server receives various write requests from a set of clients, logs each request in local memory, and forwards each log entry to a destination storage server at a secondary site. At...
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7197663 |
Concurrent PPRC/FCP and host access to secondary PPRC/FCP device through independent error management
A method of error management in a data storage system having a target device, with the target device receiving commands from a first initiator and the target device concurrently receiving commands...
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7197614 |
Method and apparatus for mirroring data stored in a mass storage system
A method and apparatus for mirroring data stored in a storage device within a mass storage system by copying data stored in a first storage device to a second storage device, while simultaneously...
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7197616 |
Virtual ordered writes
Ordering data writes include a host computer providing a plurality of data writes to a primary storage device, the primary storage device assigning a first sequence number to data writes begun...
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7194568 |
System and method for dynamic mirror-bank addressing
A dynamic addressing technique mirrors data across multiple banks of a memory resource. Information stored in the memory banks is organized into separately addressable blocks, and memory addresses...
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7194590 |
Three data center adaptive remote copy
A storage apparatus configuration in a three data center architecture comprises first and second data storage systems, and a remote data storage system. The first data storage systems can copy an...
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7194656 |
Systems and methods for implementing content sensitive routing over a wide area network (WAN)
Systems and methods for optimizing storage network functionality. The methods and systems of the present invention are particularly useful for optimizing storage network performance for cases in...
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7191365 |
Information recorder and its control method
There is provided a high-availability duplexing or multiplexing information recorder where a process is not interrupted by a trouble of a drive or a medium. The information recorder is directed to...
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7191357 |
Hybrid quorum/primary-backup fault-tolerance model
A hybrid quorum/consensus and primary-backup fault-tolerance model in an object-based distributed data storage system. When a primary manager fails, a hierarchy of network entities is established...
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7188270 |
Method and system for a disk fault tolerance in a disk array using rotating parity
A two-dimensional parity method and system for rotating parity information in a disk array, such as a RAID, to provide multiple disk fault tolerance with reduced write bottlenecks, is presented....
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7187602 |
Reducing memory failures in integrated circuits
Memory reliability is improved by using redundancy to repair errors detected by ECC. In one embodiment, redundancy repairs errors which cannot be corrected by ECC. The redundancy can employ the use...
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7188274 |
Memory repair analysis method and circuit
A method and circuit for repairing a memory array having one or more memory segments each having one spare column and a predetermined number of spare rows common to all segments, the method...
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7185164 |
Method for rearranging logical volume
A method for rearranging a logical volume including arranging a logical volume rearranging program on a particular server and using the logical volume rearranging program to acquire server/storage...
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7185228 |
Method for controlling information processing system and information processing system
A storage system is composed of storage apparatuses each separately installed at three sites for the purpose of disaster recovery, wherein data stored in one of the storage apparatuses designated...
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7185265 |
Disk array system and its control method
In a disk array system of RAID (level 5 ) improving the system performance by distributing data, duplicated fields are allocated in a parity group in order to reduce an overhead of data write. In...
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7185223 |
Logical partitioning in redundant systems
Provided are a method, system, and article of manufacture, wherein a plurality of processing nodes in a storage system are partitioned into a plurality of logical processing units, and wherein the...
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7185157 |
Method, system, and article of manufacture for generating a copy of a first and a second set of volumes in a third set of volumes
Provided are a method, system, and article of manufacture for copying data. A request is received at a first storage control unit having a first set of volumes, wherein the first storage unit is...
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7181643 |
Method for comparing the address of a memory access with an already known address of a faulty memory cell
A comparison method compares the address of a memory cell with a known address of a faulty memory cell in a semiconductor memory module. The module is subdivided into banks and has an address...
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7181655 |
Method and circuit arrangement for memory error processing
The present invention relates to a method and circuit arrangement for performing an error correction in a memory arrangement in which a redundancy system is used. The addresses of faulty cells are...
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7181642 |
Method for distributing the processing among multiple synchronization paths in a computer system utilizing separate servers for redundancy
An apparatus for and method of enhancing throughput within a cluster lock processing system having a relatively large number of commodity cluster instruction processors which are arranged in...
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7181198 |
Program rewriting system and method for a portable telephone set
The invention provides a portable telephone set wherein a countermeasure can be taken against a bug of software by a user without the necessity for voluntary recovery by a maker. The portable...
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7181641 |
Data storage verification techniques for disk drivers
Techniques are provided for verifying the integrity of data written onto a memory device under test. A pseudo random number generator generates data patterns based on a known ‘seed’ that...
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7181581 |
Method and apparatus for mirroring data stored in a mass storage system
A method and apparatus for mirroring data stored in a storage device in a mass storage system by caching mirror coherency synchronization operation requests (break mirror and/or snapshot) from the...
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7177993 |
Method of detection of data corruption in mirrored storage
A first read request is received from a computer system. Data from one mirror of a data volume is returned to the computer system in response to receiving the first read request. The computer...
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7177995 |
Long term data protection system and method
A file to be written can be partitioned into one or more partitions. Each such input partition is identified with a hash code and a group ID. Replica(s) of an input partition can be created to...
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7178055 |
Method and system for ensuring data consistency after a failover event in a redundant data storage system
Methods and apparatus for obtaining consistency of redundant data after a failover event. In one aspect, a redundant data storage system has a first data storage facility that initially acts as a...
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7178056 |
Rolling software upgrades for fault tolerant systems
Application software on a fault tolerant system having an active engine and a standby engine is upgraded. As part of the upgrade, the system determines if the active engine and the standby engine...
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7174436 |
Method and system for maintaining shadow copies of data using a shadow mask bit
In a multi-processor, multi-memory system, a technique designates portions of a local memory as being regions to be shadowed. A shadow control unit detects write operations to those regions...
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7174476 |
Methods and structure for improved fault tolerance during initialization of a RAID logical unit
Methods and structure for improved tolerance of errors during initialization of a storage volume. More specifically, features and aspects of the invention provide for tolerating read errors during...
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7174422 |
Data storage device with two-tier raid control circuitry
In general, in one aspect, the disclosure describes a data storage device that includes a device interface for receiving data access requests, more than two disk drives having platter sizes less...
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7171583 |
For PPRC backup systems
A system and method for extending peer-to-peer remote copy system operations that transfer data contents written to a first storage system from a host device to a remote second storage system over...
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7171606 |
Software download control system, apparatus and method
A system and method for downloading software updates for receivers of broadcast content data distribution has multiple memories for storing the updated version of code as well as a backup copy of...
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7167963 |
Storage system with multiple remote site copying capability
A data processing system has a plurality of storage systems. In this system, data replication is performed at high speed and efficiency while maintaining data integrity. In addition, when failure...
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7167961 |
Single head disk drive having backup system information and method of recording and/or reading system information thereof
A disk drive having a single head for recording data on and reading data from a disk-type recording medium, the disk drive including: a spindle motor to rotate the disk-type recording medium; and a...
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7165141 |
Daisy-chained device-mirroring architecture
A method of operating a daisy-chained device-mirroring architecture (where such an architecture may include a storage node N configured to mirror data on an entity representing node N−1, a...
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7165154 |
System and method for data backup
A method and system of data backup for a computer system is disclosed. Full and incremental backups of data stored to a first storage device coupled to the computer system are stored to a backup...
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7165082 |
Incremental method for backup of email messages
A system and method for mail server backup. In one embodiment, the method may comprise storing one or more messages on a mail server, where each message is associated with an index time. The method...
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7162596 |
Remote mirrored disk pair resynchronization monitor
A system, apparatus and method permit automatic monitoring of mirroring conditions of a pair of storage units, such as a pair of disk arrays for example. Monitoring information may be initially...
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7162603 |
Method and apparatus for data relocation between storage subsystems
A storage subsystem that has detected the necessity of the data relocation determines whether the data relocation is possible or not from one storage unit to another within the particular storage...
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7162658 |
System and method for providing automatic data restoration after a storage device failure
A system and method for providing automatic data restoration after a storage device failure are disclosed. An agent module detects a failure at a logical unit located at a primary storage device....
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7159150 |
Distributed storage system capable of restoring data in case of a storage failure
A collective storage system and method for restoring data in the system after a failure in the system. The system includes multiple storage nodes that are interconnected by a network and store data...
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7159139 |
Digital data storage subsystem including directory for efficiently providing formatting information for stopped records and utilization of a check value for verifying that a record is from a particular storage location
A digital data storage system in the form of a mass storage subsystem in which information is stored on one or more disk storage units, with a storage element constituting a track on a disk storage...
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