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7428584 |
Method for managing a network including a storage system
A SAN manager acquires information which each unit manages from a management agent of each unit connected to a SAN, detects virtual volume mapping and real volume mapping in the SAN based upon the...
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7426655 |
System and method of enhancing storage array read performance using a spare storage array
A system and method for enhancing read performance of at least one storage array using a spare storage array of coupled spare drives, wherein the at least one storage array includes coupled drives...
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7424637 |
Technique for managing addition of disks to a volume of a storage system
A technique manages the addition of disks to a volume of a storage system. A disk addition procedure is encapsulated into a DISKADD object conforming to a configuration management framework used to...
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7424524 |
Distributed means of organizing an arbitrarily large number of computers
A technique for organizing a plurality of computers such that message broadcast, content searching, and computer identification of the entire collection or a subset of the entire collection may be...
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7424642 |
Method for synchronization of a controller
A system and method for reintegration of a redundant controller after occurrence of a fault is provided, comprising synchronizing outputs of a primary controller with outputs of secondary...
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7421550 |
Storage system and storage system management method
A storage system secures system redundancy through a simple configuration. A primary storage control device and first secondary storage control device are connected by a synchronous method, and the...
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7421613 |
Method and system for managing of job execution
The system of the present invention is devised so that the execution of all jobs that access all of the logical volumes containing a physical volume in which trouble has occurred can be stopped at...
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7418549 |
Storage system with disk array controllers that independently manage data transfer
A disk storage system is disclosed, in which disk storage units themselves can autonomously transmit data to complement storage of data between the disk storage units without provision of an...
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7418533 |
Data storage system and control apparatus with a switch unit connected to a plurality of first channel adapter and modules wherein mirroring is performed
A storage system has a plurality of control modules for controlling a storage device for accesses from a mainframe host and an open system host respectively supporting different protocols. An open...
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7418619 |
Backup and restore operations of interdependent system components
Systems and methods for backing up or restoring interdependent applications. During a backup or recovery process, the writers and writer components included in the backup groupings of a client are...
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7418621 |
Redundant storage array method and apparatus
The present invention is directed to a data storage system utilizing a number of data storage devices. Each of the data storage devices stores primary and mirrored copies of data. Furthermore, the...
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7418564 |
Storage controller, storage control system and storage control method for mirroring volumes
The present invention provides a storage control technique that leaves no failure in a file system of a secondary volume even if the secondary volume is split from a primary volume with no...
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7418622 |
Storage control system and storage control method
A storage system enabling effective use of storage resources by immediately releasing a storage device provided as a spare from data recovery processing for a faulty storage device. Even before the...
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7418620 |
Fault tolerant distributed storage method and controller using (N,K) algorithms
Data sets and blocks are stored in a set of independent, functionally equivalent chunks. These chunks are placed on different elements of a distributed network to achieve pre-defined level of fault...
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7415488 |
System and method for redundant storage consistency recovery
A file system may selectively perform redundancy consistency recovery and synchronization of mirrors and may store dirty file information in a log or journal that indicates the modification of a...
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7415636 |
Method and apparatus for replacement processing
A recording-medium controlling apparatus that performs a read-access and a write-access of a recording medium in response to access request from a higher-level apparatus, detects a read error that...
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7415587 |
Method and apparatus for adjusting performance of logical volume copy destination
When data written into a volume (source volume) in a parity group in a storage apparatus is written into a volume (destination volume) in a parity group in a storage apparatus using a remote copy...
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7415629 |
Method for managing pair states in a storage system
A storage system includes an application server that provides an application composed of a plurality of programs, a plurality of first volumes that store data that the programs use, and a plurality...
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7412619 |
Integrated circuit capable of error management
A method according to one embodiment may include receiving a write request to write data in a local storage device. The method of this embodiment may also include detecting a write error in the...
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7412620 |
Method for testing ability to recover from cache directory errors
A method, apparatus, and computer program product are disclosed for testing a data processing system's ability to recover from cache directory errors. A directory entry is stored into a cache...
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7412594 |
Method and apparatus for managing data access and storage of data located on multiple storage devices
An apparatus and method for accessing a data item from a storage system having a plurality of data storage devices are disclosed. I/O operation requests are submitted to multiple data storage...
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7412291 |
Ground-based software tool for controlling redundancy management switching operations
Systems, methods, and computer program products for easily altering redundancy management data values associated with redundancy management logic that is executed by redundant data processing...
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7412575 |
Data management technique for improving data reliability
A method for managing data stored in a non-volatile memory having a plurality of memory blocks includes, first, determining if an error occurs in the read data in a selected memory block. If an...
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7409583 |
Volume and failure management method on a network having a storage device
A SAN manager acquires configuration information from devices constituting a SAN and produces a corresponding relationship between a host computer and a virtual volume (virtual volume mapping) and...
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7409470 |
Determining configuration data in connection with dynamic RDF
Dynamically creating a communication path between first and second storage devices, includes creating a connection to a source volume on the first storage device and indicating that the source...
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7409414 |
Computer system, management computer, storage system, and backup management method
A computer system includes a host computer; a storage system for obtaining a snapshot, at a specific point in time, of a data volume, storing data written to the data volume after the specific...
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7409584 |
Automated recovery of computer appliances
Aspects of the invention provide methods and architectures for enhancing the reliability of computer appliances and reducing the possibilities that human intervention is necessary in the event of a...
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7409581 |
Main memory controller adapted to correct corrupted data by xoring corrupted data to directly generate correct data
A computer system includes memory modules, a central processing unit and a memory controller. The memory controller is configured to access the memory modules in response to interaction with the...
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7409499 |
Automated recovery from data corruption of data volumes in RAID storage
The present invention relates to an apparatus or computer executable method of detecting and repairing corrupt data in a RAID data storage system. In one embodiment, parity and checksum data are...
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7409598 |
Information storage system
A host device 1 includes an NG table 10 for storing addresses specifying areas of a bulk memory 3 into which data cannot be written, a performance-guaranteed environment determination means ...
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7409582 |
Low cost raid with seamless disk failure recovery
A storage subsystem such as an array of disk drives, method of managing disk drives in the storage subsystem and program product therefor. The storage subsystem may be a redundant array of...
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7406621 |
Dual redundant data storage format and method
Disclosed is a data storage architecture that provides data regeneration following the failure of two storage domains and that provides conversion for RAID-6 to RAID-5 or RAID-0 without moving or...
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7406619 |
Cache synchronization in a RAID subsystem using serial attached SCSI and/or serial ATA
A RAID system includes a pair of RAID controllers adapted to operate in active-active mode, each controller including a cache memory and at least one SAS/SATA I/O chip connected to a plurality of...
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7406010 |
Data recording/reproducing method with robust error handling capability and data recording/reproducing apparatus thereof
A data recording/reproducing method with robust error handling capability and a data recording/reproducing apparatus therefore, are provided. The data recording method includes: dividing data to be...
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7404057 |
System and method for enhancing read performance of a memory storage system including fully buffered dual in-line memory modules
A system and method for enhanced read performance of a memory storage system is disclosed. The storage system includes a first memory controller. At least one first channel of a plurality of memory...
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7404103 |
Systems and methods for restoring data
In a network that includes a first database located on a first client and a second database located on a second client, a user or administrator initiates a restore operation. A dynamic mirror...
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7401193 |
System for storing data
A system is provided for storing data includes storing original data in logical blocks in a first plurality of locations in a data storage system with one and only one logical block of mirrored...
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7401191 |
System and method for performing disk write operations by writing to a data depot prior to an in-place write
Methods, computer programs, information handling systems, and state machines for performing an atomic write to a data block area are disclosed. The atomic write is an in-place write> The method...
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7401255 |
Mechanisms for recovering data from a backup by comparing transformed data to identify altered memory blocks
Mechanisms for efficiently restoring one or more memory blocks of a primary computing system. In order to restore a backup memory block, the primary system accesses transformed data that represents...
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7398420 |
Method for keeping snapshot image in a storage system
A technique for realizing a snapshot function is provided, which can reduce data transfer between a server system and a storage subsystem which is necessary during data copy operations between...
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7398367 |
Storage subsystem that connects fibre channel and supports online backup
A disk array connected to a storage area network via a fibre channel has one or more ports each controlled by a processor. Even the disk array with one port and one processor executes online...
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7398422 |
Method and apparatus for data recovery system using storage based journaling
A storage system maintains a journal and a snapshot of one or more data volumes. Two journal entry types are maintained, an AFTER journal entry and a BEFORE journal entry. Two modes of data...
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7398417 |
Storage system for increased cache reliability VI reading redundant disks into cache
A storage system includes a group of storage devices which include back-up devices configured to assure appropriate response time. When a data request from a host computer arrives, and the number...
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7395462 |
Defect estimation apparatus and related method
A weighted defect estimating apparatus and a related method for determining a defect estimation value are disclosed. The weighted defect detecting apparatus includes: a defect detecting unit for...
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7395387 |
System and method for backing up and restoring data
Described is a system and method for allowing applications to interact with a common backup program in a uniform way. The system and method provides a communication mechanism for one or more...
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7395452 |
Method and system for improved reliability in storage devices
A method of preventing data loss in a data storage system includes supplying write data to a high speed volatile write buffer and supplying electrical power from an energy storage device upon...
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7392346 |
Memory updater using a control array to defer memory operations
A memory having multiple locations for data storage is updated by performing the following method. The memory locations are grouped into commonly accessible groups of one or more data locations....
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7392424 |
Router and routing protocol redundancy
A router and routing protocol redundancy are disclosed to reduce service outage or degradation for a network device and thus to increase service availability on a network due to software and...
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7392421 |
Framework for managing clustering and replication
The present invention provides a framework for managing both clustering and data replication in a software system distributed across multiple nodes. The framework includes at least one agent...
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7391237 |
Robust and economic solution for FPGA bitfile upgrade
A system for FPGA (Field Programmable Gate Array) upgrade includes: an FPGA, a FLASH memory and a CPLD. The FLASH memory includes a first section configured to store a workable version of bit files...
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