34 results about "Replica management" patented technology

A replica management system facilitates maintaining a distributed and fault-tolerant state for a variable over an Information Centric Network (ICN) by replicating the variable across a set of ICN nodes. During operation, a variable-hosting ICN node can receive an Interest that includes a value-updating command for a replica instance of the variable, current values for a set of replicas of the variable, and a new value for the variable. The ICN node can determine, based on the current values for the set of replica variables, whether the current value for the local replica variable is an authoritative value. If so, the ICN node updates the local replica variable to the new value. However, if the current local value is not the authoritative value, the ICN node rolls back a state of the local replica variable to a previous state, and updates the local replica variable to the new value.

The invention relates to the field of computer application, and discloses a dynamic replica management method based on file heat. The method comprises a main management server and a memory server cluster, wherein the main management server is used for receiving user file access requests and updating access records of the accessed files, and the memory server cluster comprises a plurality of memory servers used for storing files. The dynamic replica management method comprises the specific steps of a multi-frequency file heat computing mechanism, a multi-queue file heat updating mechanism, and a multi-frequency replica execution mechanism. The dynamic replica management method has the advantages that the problems of contradiction between the file heat statistic period and the heat statistic accuracy, and sudden user access are solved effectively, the system spending is reduced greatly, and higher reliability is provided simultaneously.

A copy management switch is placed in a network that connects a storage device with a computer. This copy management switch is connected to the computer, a first storage device, and a second storage device over the network. The copy management switch copies beforehand data stored in the first storage device to the second storage device. On receiving a read request, which is issued from the computer to the first storage device, the copy management switch converts the read request to the first storage device into a read request to the second storage device, and then transmits the converted read request to the second storage device. The second storage device transfers, to the copy management switch, data corresponding to the read request. The copy management switch transfers the data to the computer as data transferred from the first storage device.

Disclosed are a method and apparatus for heterogeneous replica management in a distributed storage system. The method comprises: obtaining write request parameters of a replica for storing a file; obtaining from a metadata server the position information of each storage server in the distributed storage system according to the write request parameters; according to the write request parameters, converting the replica of the file into a plurality of heterogeneous replicas of the file in different formats on the basis of pre-designated formats; and storing the plurality of heterogeneous replicas of the file in different formats obtained from conversion, in the designated storage servers respectively according to the position information of the storage servers obtained from the metadata server. With the technical solution discussed above, a file can be used to store a plurality of different heterogeneous replicas respectively in a plurality of storage servers, and in case of reading the heterogeneous replicas of the file, the corresponding heterogeneous replicas can be read as needed, thus the working efficiency of users in data processing can be improved effectively.

The invention discloses a data processing method and device for an intelligent measurement terminal based on edge computing, equipment and a computer readable storage medium, and the method comprisesthe steps: configuring an edge computing node server after the integration of functions and features of all layers of the intelligent measurement terminal is completed in advance; after the configuration of the edge computing node server is completed, storing replica data of lower-layer equipment data acquired by the edge computing node server into a plurality of edge computing nodes by utilizinga distributed local replication management method, a partition edge node replica management method and a multi-homing block replica management method; when data interaction is carried out between theedge computing node server and the cloud, adding a data block processing security protection mechanism. According to the method, the device, the equipment and the computer readable storage medium provided by the invention, the problem of network congestion between the edge computing node and the cloud due to access based on a large data set is solved, the operation delay is reduced, and the data block processing capability of the edge computing node is improved.

A system for managing the number of duplicates of digital data even when a variety of recording mediums capable of repeated recording are used. The statement of the values of the number of seconds of the recording time recorded in a UTOC sector 2 of a mini-disc is differentiated between a case of recording using a conventional duplication route duplicating the audio data from a CD block (4) and a case of recording using a new duplication route of duplicating audio data from a hard disc (3) through a host controller (2). The recording time the statement of which is differentiated depending on the routes of duplication or the discrimination information of the audio data is managed by the host controller (2) to perform duplication number management.

The invention provides a semantic prefetching system and a semantic prefetching method for resource cloud storage in the educational field. The system comprises a user interface module, a request control module, a cloud storage module, a buffer management module, a replica management module and a prefetching module. The method comprises the following steps: user requests concept acquisition, concept set topic relevance judgment, candidate center concept selection, center concept determination, prefetch object determination, prefetch storage target node determination, prefetch window size and topic relevance maintenance, conversion, disappearance and stopping prefetching. Aiming at the shortcomings of the cloud storage method in the education field, the invention combines the characteristics of the education resources to form a specific education cloud storage system.

The present invention discloses a cloud storage system suitable for the access of a mobile device. The cloud storage system is divided into two layers: a mobile node group layer - a storage node layer, wherein a mobile node group provides a function of a cache layer. The system employs a complete ectypal mode, provides high-performance data storage services for the mobile device while guaranteeing the reliability of data. The system employs a dynamic replica management algorithm of a curve fitting heat value for managing the duplicate in the mobile node group, and mobile equipment transmits a data access request to the nearest mobile node group. A group leader selects a free mobile node in the group and performs a data service according to the type of a mobile client access request. If the data, to which the mobile client needs to access, is not in the nearest node group, the mobile node replaces the mobile device to access a storage node. The method of the invention can reduce the pressure of the mobile client in processing the data, improves the access speed while reducing the power consumption of the mobile client, reduces the redundant data in the system, and saves the storage space.

The CDN-based replica maintenance method is applied to a replica management server communicating with a plurality of replica storage nodes, and comprises the following steps: receiving heartbeat information of the plurality of replica storage nodes, the heartbeat information comprising battery state information of each replica storage node; identifying the states of the plurality of replica storage nodes according to the battery state information, wherein the states comprise an on-line state and an off-line state; acquiring replica information of the replica storage node in an offline state; selecting one or more replica storage nodes in an online state; and copying the corresponding copy to the selected copy storage node according to the obtained copy information needing to be copied. Theinvention also discloses a server, a replica storage node and a system. According to the method, the heartbeat information of the replica storage node is regularly received, the stability of the nodestoring the replica is monitored, the replica data of the offline replica storage node is maintained, the loss of the data replica is avoided, and an effective maintenance method is provided for replica data storage of the CDN.

The invention discloses a copy management method, and the method comprises the steps: determining a data copy in a file system, and setting the currently accessed data copy as a reading source copy; setting the data copies except the reading source copy as target data copies; if a copy management instruction is received, copying the target data copy to a host corresponding to the copy management instruction, wherein the copy management instruction comprises a copy reconstruction instruction, a copy synchronization instruction or a load balancing instruction. According to the invention, the replica management efficiency can be improved, and the influence of replica management operation on execution of normal services is reduced. The invention further discloses a copy management device, a storage medium and electronic equipment, which have the above beneficial effects.

Disclosed is an asynchronous copying of a data within memory. An example method includes during execution of a software application by a processor, receiving, by a copy processor separate from the processor, a request for an asynchronous data copy operation to copy data within a memory accessible by the copy processor, wherein the request is received from a copy manager accessible by the software application in a user space of an operating system managing execution of the software application; in response to the request, initiating, by the copy processor, the asynchronous data copy operation; continuing execution of the software application by the processor; determining, by the copy processor, that the asynchronous data copy operation has completed; and in response to determining that the asynchronous copy operation has completed, selectively notifying, by the copy processor, the software application that the asynchronous copy operation has completed.

An information processing apparatus and method capable of minimizing influences affecting business activities and dynamically changing the configuration of a storage apparatus in response to scale-out of hosts are proposed. The information processing apparatus for managing the configuration of the storage apparatus which constitutes a hybrid cloud system is provided with a data acquisition unit and a data copy management unit; and if the data acquisition unit detects the scale-out of the hosts and determines that a first volume, which stores data from the hosts, in the storage apparatus has a high load, the data acquisition unit issues an instruction to the data copy management unit to copy the data and the data copy management unit issues an instruction to the storage apparatus, in accordance with the instruction from the data acquisition unit, to copy the data, regarding which the access frequency from each host is high, to a second volume and to copy the data, regarding which the access frequency from a specified host is high, to a third volume.