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1612 results about "Data redundancy" patented technology

In computer main memory, auxiliary storage and computer buses, data redundancy is the existence of data that is additional to the actual data and permits correction of errors in stored or transmitted data. The additional data can simply be a complete copy of the actual data, or only select pieces of data that allow detection of errors and reconstruction of lost or damaged data up to a certain level.

Detection and correction of block-level data corruption in fault-tolerant data-storage systems

Various embodiments of the present invention provide fault-tolerant, redundancy-based data-storage systems that rely on disk-controller-implemented error detection and error correction, at the disk-block level, and RAID-controller-implemented data-redundancy methods, at the disk and disk-stripe level, in order to provide comprehensive, efficient, and system-wide error detection and error correction. Embodiments of the present invention use disk-level and stripe-level data redundancy to provide error detection and error correction for stored data objects, obviating the need for certain costly, intermediate levels of error detection and error correction commonly employed in currently available fault-tolerant, redundancy-based data-storage systems.
Owner:HEWLETT-PACKARD ENTERPRISE DEV LP

Distributed storage and parallel mining method for state monitoring data

A distributed storage and parallel mining method for state monitoring data includes the steps: defining function service models of a remote substation state monitoring unit and a state monitoring communication front-end processor by means of Web service description language, and exchanging the state monitoring data of electric power equipment in an electric power wide area network environment by a simple object access protocol; storing large-scale state monitoring data redundancy in a distributed file system, creating an index table for a state monitoring data file, inserting the index table into a large-scale structural data table and querying the state monitoring data according to a query request; and generating basic data and multi-dimensional analytical data by extracting, converting and loading to built a data warehouse, and parallelly executing association rules, classification and clustered data mining algorithm by means of MapReduce task decomposition and result summary. The distributed storage and parallel mining method can be used for effectively realizing distributed data exchange, redundant storage and rapid parallel processing for state monitoring information of the mass electric power equipment in an intelligent power network environment.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)

Open type cloud computing monitoring system for large scale cluster and method thereof

ActiveCN103024060AReal-time monitoring serviceReliable and detailed monitoring serviceData switching networksDynamic monitoringMonitoring system
The invention belongs to the technical field of cloud computing, and particularly relates to an open type cloud computing monitoring system for large scale cluster and method thereof. The open type cloud computing monitoring system for large scale cluster comprises a monitoring terminal, a function server cluster and a cloud platform server cluster, wherein the monitoring terminal is used to select the object which is needed to be monitored for users, the function server cluster is used to receive dynamic monitoring levels and monitoring objects needed and selected by the monitoring terminal and sends out the monitoring instructions, the cloud platform server cluster is used to receive the monitoring instructions of the function server cluster and transfer the monitored node information to the function server cluster. The open type cloud computing monitoring system for large scale cluster dynamically monitors a physical machine and a virtual machine, which operate in the cluster, in real time and provide cluster administrators with more reliable, real time, and detailed monitoring service; besides, the monitoring system reports the node monitoring information and uniformly stores the monitoring information to prevent mass data redundancy.
Owner:SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI

Data storage using disk drives in accordance with a schedule of operations

Techniques for data storage using disk drives. To conserve power and reduce heat generation so that higher packaging density is possible, only some of the disk drives in an array may be powered on at any one time. Disk accesses may then be scheduled so that appropriate drives are powered on and off at appropriate times. In addition, various levels of storage services may be provided depending, for example, upon how accessible the drives are to individual clients and upon a level of data redundancy provided. Another advantage includes off-loading of tasks to a controller or processor included within the disk drives themselves. For example, the disk drives themselves may compute error detection or error correction representations and perform data integrity checks based on those representations. Failure simulation may also be performed to verify the ability to recover lost data and the disk drives may be used to convert the data into general formats that may be expected to be more easily read in the future.
Owner:HEWLETT-PACKARD ENTERPRISE DEV LP +1

Data redundancy for writes using remote storage system cache memory

A technique for using a remote array cache memory for data redundancy. A computer system includes a first storage system having cache memory and mass storage. Data to be written to the mass storage is written to the cache memory. Redundant data is stored elsewhere in case the cache experiences a fault before the data can be written to mass storage. Otherwise, data not yet written to the mass storage may be lost. The first storage system is in communication with a second storage system which is typically located remotely from the first storage system. When the first storage system receives a write request, the first storage system forwards the data to the second storage system for redundant storage. Where the data is forwarded to the second storage system, this is referred to herein as "remote mode."The first storage system may include redundant cache memories and enters remote mode only in the event a fault affects one of the cache memories. The data can then be recovered from the second storage system if needed.
Owner:HEWLETT-PACKARD ENTERPRISE DEV LP

File mode RAID subsystem

A method and system enables data redundancy across servers, networks, and controllers by using standard redundant files as underlying storage for RAID subsystem configurations. A redundant array of independent disk (RAID) subsystem includes a front-end interface configured to process non-redundant requests received from a primary file system communicating with an application program. A back-end interface of the RAID subsystem is configured to process redundant requests corresponding to the non-redundant requests. The redundant requests to be issued to a secondary file system communicates with a block mode device including multiple physical storage devices.
Owner:RAIDCORE
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