229results about How to "Improve disaster tolerance" patented technology

The invention discloses a medical data platform based on the block chain technology. The medical data platform comprises a terminal, a server module, a data storage module and a block chain network. The terminal exchanges data with the data storage module and the block chain network through the server module. The server module comprises a communication server, an intermediate certificate server and a root certificate server and is used for processing data interaction between the modules and allocating certificates to the block chain network nodes. The data storage module comprises a medical information system and a distributed image database and is used for data storage. The block chain network comprises multiple institutional accounting nodes and multiple consensus nodes. The accounting nodes perform mutual data synchronization. The medical data platform based on the block chain technology has the advantages that the existing medical information is stored in the block chain shared account book so that all the medical institutions can share the medical information related to the patients, and the privacy protection function of the medical data can be realized by using the encryption algorithm and thus sharing of the medical data can be facilitated and the security of the sensitive information can also be protected.

The invention discloses a data backup method based on an Erasure coding and copying technology. When data to be stored exceed the maximum capacity of a storage source, the data are stored in a distributed way after being divided so as to improve the storage efficiency. Meanwhile, check codes of divided data subblocks are calculated and stored, and the damaged data subblocks are restored by utilizing an Erasure code under the condition that partial data subblocks are damaged, thereby ensuring the integrality of original data. The original data are backed up by a copying method, and meanwhile, the amount of generated data copies is confirmed according to parameters such as the amount of storage servers, and the like. Finally, the metadata information of the generated data copies is stored in a copy database so that a user can restore the original data through inquiring the copy database and utilizing the data copies when a data disaster happens. a data dividing and copy creating technology is used for better solving the problem of data backup in a data capacity disaster, thereby not only improving the storage efficiency of the data, but also ensuring the integrality of the data.

The invention relates to the technical field of low-orbit satellites, in particular to a low-orbit communication satellite constellation inter-satellite route selection method and device. Through themethod, the constellation network only needs to call the routing table according to time fragments, so that the workload of a ground operation control system is effectively reduced, through fine division of time slices, optimized routing can be obtained, time slices are divided at equal time intervals so that the requirement for satellite equipment performance is effectively lowered, meanwhile, frequent signaling interaction caused by high-speed movement of a satellite is avoided, and the routing decision process is simplified. By coupling processing on the constellation network and a ground network, the method fully considers the problems of feed link service area division and relay of the low-orbit constellation satellite among the gateway stations, has the advantages of low routing computation complexity, fast routing decision, low requirements on satellite equipment performance and the like, has obvious advantages in the aspects of adaptability and feasibility, and is very suitablefor the selection process of inter-satellite routing in the low-orbit satellite constellation.

The invention discloses a multi-copy storage method and a multi-copy storage system for a distributed database system, and belongs to the field of computer software. The multi-copy storage system comprises a main Master node, a standby Master node, a plurality of storage nodes and a connection network. The multi-copy storage method includes steps of 1, storing data in different data pieces; 2, only allowing a user to operate the data in a primary version, and enabling the multi-copy storage system to synchronize change of the data to various copies in real time and guarantee the atomicity; 3, enabling the multi-copy storage system to detect survival conditions of the nodes via synchronous heartbeat detection, and enabling a main Master host to instantly select an available copy to replace the primary version when a certain storage node of the data in the primary version dies; 4, enabling the multi-copy storage system to carry out detection and repair operation for the storage copies regularly, and migrating the data pieces with excessively low quantities of copies to other available storage nodes by means of local storage migration. A main storage model and a standby storage model are adopted for each data piece, and the copies are of completely identical logical structures and are distributed on different physical storage nodes. The multi-copy storage method and the multi-copy storage system have the advantages that the integrity and the availability of the data are protected against the death of optional nodes of the system.

Embodiments of the invention disclose a data access method, device and system in a content distribution network (CDN). The CDN comprises a first layer of CDN node and a second layer of CDN node. The method comprises the steps that the first layer of CDN node receives a user request sent by a terminal; when the first layer of CDN node determines, according to the user request, that local has data needed to be accessed, the first layer of CDN node returns the data needed to be accessed to the terminal; when the first layer of CDN node determines, according to the user request, that local has no data needed to be accessed, the first layer of CDN node sends the user request to the second layer of CDN node, so as to obtain the data needed to be accessed and return the data needed to be accessed to the terminal. Through adoption of the method, data traffic of a source data center can be reduced, the hit rate of user request can be improved, and furthermore, the disaster tolerance of the system can be enhanced.

The invention discloses a virtual debugging system based on an OPC UA industrial communication protocol. Modules of the virtual debugging system are mainly divided into a data acquisition layer, a data interaction layer and a simulation equipment layer. The data acquisition layer comprises an industrial robot, a PLC and an OPC UA acquisition module; the data interaction layer comprises a data processing module, a Redis database module and an interaction interface module; the simulation equipment layer comprises a RoboDK simulation robot and a RoboDK simulation machining center; the data acquisition layer acquires output data of the PLC and the industrial robot through an OPC UA protocol, transmits the data as input to the data interaction layer, and writes the data transmitted by the datainteraction layer into equipment; the data interaction layer transmits data into the simulation equipment layer according to a data address configured by the interaction interface module and transmitsthe data of the simulation equipment layer to the data acquisition layer; the simulation equipment layer transmits data of the data interaction layer to the simulation model through an API, and transmits a signal of simulation equipment to the data interaction layer; and the system completes a virtual debugging function by controlling input and output of the simulation equipment.

The invention relates to an application disaster tolerance method based on the CDP and the iSCSI virtual disk technology. The application disaster tolerance method based on the CDP and the iSCSI virtual disk technology comprises the steps that firstly, CDP data blocks are stored in an OFS storage medium and an NFS storage medium respectively; secondly, after service roll data are damaged, data in the NFS storage medium are organized into a mounting roll according to the iSCSI virtual disk technology to be mounted on a host computer to serve as a temporary service roll to be used by a host computer service system, new service data are saved in the OFS storage medium, and data recovery is conducted on the original service roll by means of data in the OFS storage medium; after data recovery of the original service roll is completed, the service system is stopped in a service idle time, the new data are recovered to the original service roll, and the service system is switched back to the original service roll. Compared with the prior art, the application disaster tolerance method based on the CDP and the iSCSI virtual disk technology has the advantages that reservation of the new data is achieved when the mounting roll serves as the temporary service roll, and data recovery of the original service roll is achieved under the condition that service interruption is not needed.

The system is featured as the follows. At least one short message gateway is connected to two or above two signaling transfer points of mobile network as well as to two or above two short message centres. It can be made a spare gateway for some other short message centre gateway since the short message centre gateway is connected with above one signaling transfer points so that chaining to be switched to preset backup short message centre can be ensured by utilizing global code address varying function when certain short message centre signaling gateway if fault. The same as above, short message can be retransmitted to spare short message centre for processing when certain short message centre is fault since short message gate way is also connected with spare short message centre in addition to its mainly used short message centre.

A computer replication and/or recovery system and process comprising a recovery machine which rebuilds operating system (“OS”) disks for damaged computers from their backup images. The recovery processes are performed within the recovery machine, which is a separate machine from both the damaged and replacement machines. Rebuilt OS disks are then adapted to the replacement computers with different hardware. The recovery method of the present invention is a network independent solution.

The invention discloses a method, application and system for managing a server cluster. The method for managing configuration data of the server cluster is applicable to be executed in a management server. The server cluster comprises a plurality of application servers. The method comprises the following steps: receiving first configuration information from a client, wherein the first configuration information comprises an identification of a corresponding configuration item and configuration data of the configuration item; and synchronizing the received first configuration information to a configuration server, so as to facilitate the configuration server to inform one or multiple of the plurality of application servers monitoring the configuration item to acquire the first configuration information.

The invention discloses a cross-regional service disaster method and device based on main cluster servers. The method includes that after the cross-regional service disaster device based on the main cluster is connected with the main cluster servers, the cross-regional service disaster device monitors a running state and a link state of the main cluster servers. If the main cluster servers and the links are normal, the network devices are asked to send the received service request message to the main cluster servers. If the main cluster servers and the links are out of order, the network devices are asked to send the received service request message to the locality, and to deal with the service request message sent by the network devices according to the received business data sent by the main cluster servers. If the breakdown is restored, the business data which is formed during the period of breakdown is sent to the main cluster servers, the network devices are asked to send the received service request message to the main cluster servers.The technical scheme can improve the disaster toleration of the cross-regional service.

The invention discloses a cluster storage system and a data storage method thereof, relating to the cluster storage system field. The cluster storage system comprises a shared storage device as well as a data hierarchical server and a DRBD located at element nods, wherein the data hierarchical server determines the priority values of all the files in the shared storage device and uploads the data of the files with priority value larger than a set value to the DRBD; and the DRBD receives and stores the data of the files uploaded by the data hierarchical server. In the embodiment of the invention, a mixed storage architecture, combining low cost and huge capacity of the centralized storage with high reliability of the distributed storage together, is adopted, and meanwhile, a data extracting model for classified data storage is built, which facilitates data management and enhances the disaster tolerance of the whole cluster, thereby providing an effective guarantee for the safe operation of the electronic information system.

The invention provides a named data vehicle-mounted network data distribution method based on a navigation route. According to the method, through applying a concept of a named data network to a vehicle-mounted network and combing with a vehicle movement locus, a more effective vehicle-mounted network message distribution method is provided so that a higher broadcast hit rate can be achieved with lower expenditure. The method provided by the invention does not need the assistance of any road side unit and directly realizes the inter-vehicle communication. By utilizing a vehicle own message broadcasting function and combing with the vehicle movement locus, a relatively stable message distribution algorithm is designed. And meanwhile, by utilizing the concept of the named data network, the restriction of the existing internet based on an IP address mechanism is broken through and the message distribution is more flexible and efficient. Because no road side unit is used and the message transmission is completely finished by a vehicle, the cost is very low; and the breakdown of the single vehicle does not affect the distribution of a vehicle-mounted network message, so the disaster tolerance is high.

Present invention discloses a rapid storage device. It contains nonvolatile storage, control unit and storage cell, wherein nonvolatile storage for backing up updating block data, storage cell erasing updating block data after nonvolatile storage nonvolatile storage executing backing up operation, control unit updating current updating block according to new data and the backed data in nonvolatile storage. Present invention also discloses a quickly updating data method, it contains backing up corresponded updating block data to nonvolatile storage, then erasing updating block, updating current updating block according to new data and backed data in nonvolatile storage. Present invention discloses a quickly updating data method. Present invention also provided device and method speed up flash memory updating data speed and prolong flash memory service life.

An embodiment of the invention relates to the field of PLCs (programmable logic controllers) and particularly relates to a disaster recovery method, device and system for a PLC-based distributed control system to improve the disaster recovery performance of the distributed control system. The disaster recovery method for the PLC-based distributed control system is applied to a server cluster witha virtual operating system, and each server in the server cluster is provided with a soft PLC, a soft PLC real-time operating system, a soft guard and a soft guard real-time operating system. When thesoft guards determine soft PLC faults, an operating state of each server in the server cluster is acquired, the soft guards determine a target server according to the operating state of each server,the soft guards send configuration instructions to the target server, and the configuration instruction is used for instructing the target server in soft PLC configuration. Automatic soft PLC re-configuration can be realized, and the disaster recovery performance of the distributed control system is improved.

The invention relates to a data collection running method for a dispatching automation system, which is characterized in that (1) zone setting is carried out on a data collection part in an integrated system within the wide-area range, each data collection zone coordinately works to together finish the data collection work of the entire system; (2) each data collection zone only processes tasks in the respective zone thereof, and various information and running states of other zones have no influence on the normal running and source consumption of the zone; and (3) a data collection subsystem of each zone supplies all information thereof to the system for centralized processing and displaying, and an additional data collection zone is unnecessary for selection work during manual data inquiry.

The embodiment of the invention provides a content distribution network disaster tolerance method and device, a computer device and a storage medium. The method comprises the steps of: receiving a network request sent by a client, and determining a network connection state between the client and a first cache server; obtaining the number of times that the network connection state is an abnormal state to obtain the abnormal number of times; determining whether the abnormal number of times is greater than the preset threshold number of times or not; if yes, determining a second cache server according to an attribute parameter corresponding to the first cache server, and establishing the network connection of the client and the second cache server. According to the embodiment, the network connection state of the cache server in the content distribution network (CDN) is monitored to achieve replacement processing of the cache server in the abnormal state so as to effectively improve the content distribution network disaster tolerance and facilitate improvement of the user experience.

The invention relates to the computer information, and discloses a server resource distribution method and system. The server resource distribution method and system is characterized by: acquiring the number of idle server resources and the physical location information of the idle server resources; and selecting a physical location where the largest number of idle server resources can exist to distribute the idle server resources at the physical location preferentially. Therefore, the server resource distribution method and system are conductive to the controllability of distribution of every time so as to balance the quantitative proportion of the idle server resources owned by each physical location, and can prevent the proportion of the influenced services becoming too large when a physical accident happens. Besides, according to the acquired information, an index tree is established firstly, and then distribution of the server resources is performed based on the index tree, so that the efficiency for distribution of the server resources is improved.

The invention provides service processing equipment, a service processing method and a service processing system. The service processing equipment comprises at least two data centers and a network access module, wherein the data center is used for performing service processing according to a received service request, and copying data generated by the service processing to the other data center; and the network access module is used for receiving the service request, detecting the load conditions of each data center, selecting the data center according to the load conditions and transmitting the service request to the selected data center. The service processing method comprises that: the network access module receives the service request, detects the load conditions of each data center, selecting the data center according to the load conditions and transmitting the service request; and the data center performs the service processing according to the received service request, and copies the data to the other data center. By the service processing equipment, the service processing method and the service processing system provided by the invention, service running is not required to be interrupted in the application recovery process of a failing data center, and the disaster tolerance effects of the service processing system are bettered.

The invention relates to a high-standard definition compatibility and high-safety news non-linear editing network system, which is characterized by comprising a workstation part, a network security and exchange part, a central storage part and a server part, wherein the workstation part can be used for realizing a function of editing locally and then editing the network and is used for producing news programs, and all workstations are used for storing medium-code stream materials; the network security and exchange part is used for connecting all workstations in the system to ensure the exchange between a media file and a data file; concentrated storage is realized on the central storage part by using a disk array of a single central storage body; the central storage part is used for storing high-code stream materials; and the server part is used for realizing a news program network producing function. According to the high-standard definition compatibility and high-safety news non-linear editing network system, by taking central storage as the main and local storage as the backup, a synchronous mirror image is stored in the central storage part and the local storage by media resources when local editing is performed; the media resources of the local storage are used for editing, browsing and synthetizing the backup, and the media resources of the central storage part are used for output synthesis, therefore, high-standard definition seamless compatibility, ultrahigh safety, double-code stream editing, media backup of material push, asymmetric double reading and writing, offline editing and offline broadcasting are realized, and high-definition production is realized at the production cost of a standard-definition network. The super cost performance is high.

The invention relates to a data disaster tolerance method and device, computer equipment and a storage medium. The method comprises: obtaining a replacement instruction triggered when a locally observed consensus node breaks down, wherein the consensus node and the observer node are located in the same block chain network; determining an observation layer number corresponding to a block locally stored by the observer node according to the replacement instruction; from the observation layer number, pulling blocks of which the layer number is greater than the observation layer number from the block chain network in sequence; carrying out consensus on the pulled blocks in a block chain network, and storing the pulled blocks after consensus is completed until the number of layers of the locally stored blocks reaches the current highest layer number; and replacing the failed consensus node with a new consensus node. By adopting the method, the disaster tolerance performance of the blockchain network can be improved.