59results about How to "High recovery success rate" patented technology

The invention discloses a rapid restoring method for a virtual network based on a multi-commodity flow problem model, which comprises a communication protocol between a bottom network provider and a service provider, a restoring process for failed virtual network mapping, a coping strategy for unsuccessfully-restored virtual net mapping, and a method for recording failure times of each node link in a physical network. The rapid restoring method for the virtual network based on the multi-commodity flow problem model better adapts to the current internet environment, has effective and rapid running process, and has very high recovery success rate; moreover, the running result of the rapid restoring method for the virtual network based on the multi-commodity flow problem model better improves the loading balance of the network.

The invention discloses a fragmented file data recovery method. The fragmented file data recovery method comprises the following steps of S1 carrying out analysis to obtain partition information; S2 finding a file system idle area; S3 selecting the type of a file needing to be recovered; S4 searching the file header characteristic; S5 judging whether the file header characteristic is found out or not; executing S6 when the file header characteristic is found out; executing S7 when the file header characteristic is not found out; S6 recombining the file in dependence on the file header characteristic, and executing S8 after the recombination is successful; S7 carrying out file recombination in dependence on a pre-stored file storage mode, and executing S8 after the recombination is successful; and S8 extracting the file which is recombined successfully. Beneficial effects of the fragmented file data recovery method are that the file header can be found out according to the file header characteristic, and the data content of the file can be found out according to the file header, under the condition that the file header is lost, fragments in the file system can be found out according to the file format or code known in advance, the fragmented file is checked, whether the data is correct is judged, ordered recombination is carried out to the fragment data, the aim of recovering an incomplete fragmented file is reached, and the data recovery success rate is high.

The invention proposes a recovery method for multicasting service connection in an automatically switched optical network, which includes the following steps: a root node calculates and establishes an optical multicasting tree according to a multicasting service demand and sets multicasting service attribute and a multicasting ID, and simultaneously sets recovery strategy for branch nodes; various network elements in a network detect that a fault happens to nodes and/or links; the node network element detecting the fault searches for the service connection on the invalid link and/or the service connection among the invalid network elements; if the service connection comprises the multicasting service connection, the node network element sends the signaling message containing the invalid link and/or invalid node to the branch node network element of the multicasting service connection; the branch node combining the set recovery strategy recalculates one restoration route or one restoration multicasting tree route with the branch node network element serving as a source and a leaf node influenced by the fault serving as a destination; and the branch node starts signaling process of establishing the restoration route or the restoration multicasting tree and sets the attribute and the multicasting ID same in the original service connection for the new service connection.

The present invention discloses an Oracle database based data recovery method comprising the following steps: S1: determining a data table of a database; S2: obtaining all the information of the table; S3: obtaining a recorded logical structural relationship; S4: obtaining specific information of fields; S5: obtaining logical structural features of data recovery ; and S6: composing data into the form of the the data table, and extracting the data. The present invention has the following beneficial effects: the records and fields in the data table are parsed by virtue of an Oracle database structure, the head of each record and the structure division data of the fields are found and then are extracted, the data recovery efficiency is high, the data destruction and the data discontinuous fragment level database can also be normally extracted and recovered, the data recovery success rate is high, and the loss caused by database damages is effectively reduced.

The invention requests to protect a D2D video distribution and precaching method based on network coding. The method comprises the following steps: a multi-hop D2D network is firstly created, a node maintains a neighbor cache information table, each device terminal node periodically floods the own cache information message in a certain range, and a neighbor device receives the message and then updates the neighbor cache information table according to the message; when a user node wants to acquire a certain video, a video acquisition request is sent to all seed nodes that own the video files according to the neighbor cache information table, the seed nodes send the coded video data to the user node after receiving the request and add related packet header information; and the video coding data VDData is subjected to multi-hop transmission and cache in the network, and an intermediate node implements recoding, forwarding and precaching on the video coding data VDData until the video coding data reaches a destination user node. According to the D2D video distribution and precaching method disclosed by the invention, the local cache hit rate of D2D can be successfully increased, and the load of base stations can be reduced to a maximum extent.

The invention discloses a code mode-based document data recovering system and a quick recovering method thereof. The system comprises an input unit, a code rule storage unit, a code combination rule storage unit, a data retrieval unit, an effective code judging unit, an effective code extracting unit, an effective code storage unit, a code recombination unit and an output unit. The code mode-based document data recovering system is characterized by the effective codes of the document data, recovers various documents by extracting the codes which are effective codes in a storage medium and can recover document data files which are characterized by losing file signature, file final character and the like and recover various kinds of written information which is not covered by other files. The document recovering system and the quick recovering method thereof have the characteristics of high document identification rate and high searching speed, and can find fragments of damaged documents, extract the fragments of the damaged documents from the storage medium and greatly improve the current document recovery success rate.

The invention discloses a data recovery method for RAID6. The data recovery method comprises the following steps: S1, retrieving DBR for NTFS partitioning in all discs; S2, retrieving the start position of an MFT sheet in DBR; S3, calculating the size of an array band; S4, calculating the start position of an array; S5, judging a check region, and regrouping the array; S6, recovering lost data. The data recovery method for RAID6 has the benefits that DBR characteristic and MFT characteristic can be utilized to perform quick scan and obtain a whole array structure, data in a data region and check region are accurately distinguished, data matching regrouping is performed by utilizing a common array arrangement manner of RIAD6, and lost data in one hard disc and two hard discs can be recovered. The speed of analyzing the whole array structure is high, the data regrouping speed is high, and the success rate of data recovery is high.

The invention relates to the technical field of network communication, in particular to a method for recovering a multicast routing tree by proactive reconstruction in an overlay network environment. In the method, a node backup protection mechanism reconstructs and recovers a disaster tolerance mechanism of a failed multicast tree communication route in an overlay network; and aiming at the problem of low recovery efficiency caused by dependence on backup of the proactive overlay multicast routing tree recovery method, a method for detecting backup effectiveness between a target node and a backup node is introduced into a global search backup father node strategy and dependence which exists between the backup father node and the protected target node is limited, so that the success probability of recovering a failed overlay network multicast routing tree is improved. The method can greatly improve recovery success rate while slightly reducing recovery time efficiency and is favorable for constructing an overlay network multicast tree with reliable self-recovery capability.

The invention relates to the technical field of a computer network and particularly discloses an all optical network business restoration method based on bandwidth compression, which comprises the following steps of: S1, reducing a bandwidth required for restoring a failure business from two aspects: 1) first compressing a protection bandwidth between channels through a specific restoration route strategy to obtain a restoration route; 2) utilizing the controllable modulation order characteristics of an all optical network to compress the bandwidth required by the failure business self if network resources for the normal restoration of the failure business are insufficient on the restoration route; S2, allocating required frequency spectrum resources for the failure business in the restoration route so as to restore the transmission of the failure business. The invention has the advantages that with the restoration route strategy, the protection bandwidth between the channels can be compressed, the utilization rate of the resources and the protection restoration success rate are improved, and the network survivability is enhanced; with the mode for improving the modulation order, the bandwidth required by the business self can be compressed as far as possible under the condition of ensuring certain signal quality, and the business restoration success rate can be effectively increased.

The invention discloses a local and distributed collaborative design reliable flash memory storage method and system, and the method comprises the steps: enabling a flash memory conversion layer to send flash memory reliability information to a host when flash memory equipment is connected to a host system, and enabling error data information to be sent to the host when the flash memory equipmentreads data errors; the host carries out data recovery on the error data, obtains correct data from a remote copy or an erasure code by utilizing a distributed fault-tolerant mechanism to help recoverthe error data, obtains the correct data from a party completing data recovery first, and sends the correct data to the distributed storage system; and when the distributed fault-tolerant mechanism cannot provide the correct data required for recovering the error data, the distributed storage system obtains the original data from the flash memory device where the correct data copy is located so asto recover the error data. The method can comprehensively manage the reliability mechanism of the distributed storage system and the local flash memory device, reduces the read operation delay of thesystem, improves the local data recovery efficiency of the flash memory device, and enhances the reliability of the storage system.

The invention discloses a method for calculating a preset recovery route, comprising the following steps of: acquiring a preset rate of links of the whole network, wherein the preset rate is a ratio of bandwidth of each link used for a preset recover route to the bandwidth of the link; and calculating the preset recovery route of a service according to the preset rate when a default preset recovery route of the service is invalid. The invention also provides a corresponding device. By adopting the method and device for calculating the preset recovery route, disclosed by the invention, the preset rate is introduced, thus a control plane calculates the preset recovery route for the service according to the preset rate, recovery success rate can be greatly improved when multiple services have a fault at the same time, the problem that multiple services with the same attribute can not be successfully recovered at the same time in the existing preset recovery route technique is solved, and service quality of the service is improved.

The invention discloses a data backup method, device and system. The method comprises the following steps: backing up an updated incremental log to storage equipment by monitoring incremental log change; synchronizing a last log identifier in the incremental log to second equipment in a standby equipment state; and when monitoring that first equipment is switched from a main equipment state to thestandby equipment state, stopping monitoring the increment log change. The technical problem of data recovery failure during fault recovery easily caused by large backup data volume and low backup speed of the backup log in the prior art is solved.

The invention discloses a data recovery method based on a large database. The data recovery method comprises the following steps that S1, a database backup or a database design document is found out; S2, a data table needing data recovery is found; S3, the logical structure relation of records is determined; S4, structures of fields are determined; S5, all record heads are analyzed; S6, the fields are separated; S7, data is extracted. The data recovery method has the advantages that the records and fields in the data table are parsed by adopting a database structure, structural division data of heads of all the records and the fields is found and then is extracted, the data recovery efficiency is high, fragment-level databases with damaged data and discontinuous data can be also normally extracted and recovered, the data recovery success rate is high, and loss caused by database damage is effectively reduced.

The invention discloses a method for restoring a capacity abnormity of a Seagate hard disk. The method comprises the following steps of: S1: the hard disk entering an instruction mode, a T-level mode and a 1-level mode, reducing an SMART table, if a reduction error occurs, executing the step S2, or if the reduction is successful, executing the step S3; S2: reducing a Congen parameter of the hard disk; S3: clearing a G table; and S4: restoring hard disk capacity. The method has the beneficial effects as follows: the hard disk capacity attempts to be restored in four different modes, and the success rate of restoration is high due to the application of stepped restoration means; and the problems that LBA is equal to 0 and LBA is equal to 1 can be dealt with and the capacity abnormity problem not caused by the fact that the capacity is shorn can be solved.

The invention provides an ionic type rare earth abandoned mining area soil Cd pollution remediation method, and relates to the technical field of soil remediation. According to the ionic type rare earth abandoned mining area soil Cd pollution remediation method, the ionic type rare earth abandoned mining area soil is remedied through combination of abandoned rare earth tailing pioneer plants and indigenous fungi, and the ionic type rare earth abandoned mining area soil Cd pollution remediation method has the advantages that the plant remediation success rate is high, the effect is good, the technical process is simple and convenient, construction is easy, and the Cd content and the water and soil loss rate of the soil can be obviously reduced; and compared with similar methods, the ionic type rare earth abandoned mining area soil Cd pollution remediation method is low in cost, attractive, safe and easy to popularize and apply, and has huge application prospects and market requirements. According to the embodiment of the ionic type rare earth abandoned mining area soil Cd pollution remediation method, bacterial liquid of trichoderma and/or penicillium oxalicum is inoculated in the ionic rare earth abandoned mining area in the southern rainy region, the herbaceous or shrub plant seeds are dibbled, so that Cd in soil is obviously absorbed, the biomass of plants is improved, the ecological restoration effect of vegetation is good, and the ionic type rare earth abandoned mining area soil Cd pollution remediation method is suitable for rapid treatment of Cd pollution in rare earth tailing wasteland in the southern rainy region.