CN107145407B - Method for carrying out local backup on data - Google Patents
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- CN107145407B CN107145407B CN201710342185.8A CN201710342185A CN107145407B CN 107145407 B CN107145407 B CN 107145407B CN 201710342185 A CN201710342185 A CN 201710342185A CN 107145407 B CN107145407 B CN 107145407B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1446—Point-in-time backing up or restoration of persistent data
- G06F11/1448—Management of the data involved in backup or backup restore
- G06F11/1453—Management of the data involved in backup or backup restore using de-duplication of the data
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1446—Point-in-time backing up or restoration of persistent data
- G06F11/1458—Management of the backup or restore process
- G06F11/1461—Backup scheduling policy
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Abstract
A method for locally backing up data comprises the following steps: the terminal sends a backup request to a local backup entity; the local backup entity verifies the terminal identity and returns a response; the terminal transmits data to the local backup entity; the local backup entity gathers the data; the local backup entity checks the duplicate of the data; the local backup entity grades the data; according to the grading result, the local backup entity backs up the data of different grades on the storage module; the local backup entity constructs and stores a mapping relation; carrying out redundancy operation on the backed-up data; the integrity and reliability of the data with higher level is checked. The method can ensure the safety and reliability of data, save cost, improve the utilization rate of data storage resources and processing resources, avoid repeated backup of data with repeated contents, reduce physical space and power consumption, improve integration level and improve the speed of reading, writing and erasing.
Description
Technical Field
The present invention relates generally to the field of computer data security, and more particularly to a method for local backup of data.
Background
With the rapid development of the information industry, a huge amount of data has appeared, which includes both raw data and intermediate and result data, wherein the raw data and the result data contain important information. However, from the viewpoint of the computer system, on the time axis, a disaster is inevitable due to external causes and the computer system itself. By computer system disaster is meant: because human or natural causes cause serious malfunctions or breakdowns of the computer system, the business functions of the computer system are halted or the service effort can be reduced to a level below a threshold or an emergency event of considerable duration. Common disasters include, but are not limited to: system disasters such as system self-failure, software or application induced errors, network and/or power supply outages, human disasters such as human errors, damage, malicious attacks, and natural disasters such as water, fire, and electricity shocks. It is clear that the disaster resistance of computer systems is an important dependence for data security and reliability in the information industry.
However, according to statistics, nearly one third of data has no disaster resistance, and effective backup is not performed, which has potential hazards, and a disaster is caused if the data is lost or damaged once. The backup comprises local backup and remote backup beyond tens of kilometers, the former can realize synchronization, and the latter can only be asynchronous due to factors such as communication technology. The main body of backup also depends on a backup software system, and the disaster-resistant system cannot effectively cover the complete disaster prevention project. According to the relevant regulations, data in the fields of banking, electric power, public safety, etc. need to be forcibly backed up, however, in industries such as those listed, since the amount of data generated per predetermined period of time is quite large, if backup is directly performed, or data of repeated contents are repeatedly backed up, it is inevitable that modules implementing backup are hard to stand up, or the need is satisfied by expansion without limitation, but this brings about a sharp rise in cost, an increase in physical space (e.g., more rooms are required), an increase in power consumption of the backup entity itself, and an increase in power of peripheral securing devices such as a temperature and humidity adjusting device; or remote backup is employed at the expense of synchronization. There is a need for an efficient use of the storage space of the locally backed up entity to reduce cost and power consumption. In addition, due to the mass of data, great pressure is brought to processing resources, a large number of threads are occupied by writing and storing of the data, power consumption is increased sharply, meanwhile, the writing speed is reduced due to the increase of electronic equipment, and a vicious circle is formed. There is therefore a need for a method and corresponding device that can increase writing speed and increase resource usage. In addition, since the backup device includes a storage element, and a large amount of data requires a large amount of ordinary semiconductor elements, a storage unit structure with higher integration density and more compact physical layout structure and a corresponding read-write erasing method are required, which can improve the integration level, reduce the power consumption, and improve the read-write erasing speed.
Disclosure of Invention
One of the objectives of the present invention is to provide a method for locally backing up data, which can ensure the security and reliability of data, save cost, improve the utilization rate of data storage resources and processing resources, avoid repeated backup of data with repeated contents, reduce physical space and power consumption, improve integration level, and improve the speed of reading, writing and erasing.
The technical scheme adopted by the invention to solve the technical problems is as follows: a method for locally backing up data comprises the following steps: in step S1, the terminal sends a backup request to the local backup entity; in step S2, the local backup entity verifies the terminal identity and returns a response; in step S3, the terminal transmits data to the local backup entity; in step S4, the local backup entity aggregates the data; in step S5, the local backup entity performs a duplicate checking on the data; in step S6, the local backup entity ranks the data; in step S7, the local backup entity backs up the data of different levels on the storage module according to the grading result; in step S8, the local backup entity constructs and saves a mapping relationship; in step S9, a redundancy operation is performed on the backed up data; and in step S10, the integrity and reliability of the higher level data is checked.
According to another aspect of the present invention, in step S1, the sending, by the terminal, the backup request to the local backup entity includes: the terminal sends a backup request to a local backup entity through a wired or wireless link, wherein the request comprises a user ID, a profile type of data to be transmitted and the like; and in step S2, the local backup entity verifying the terminal identity and returning a response includes: and traversing the history list by the local backup entity, checking the information in the request one by one for consistency with the information in the history and the network sharing blacklist, returning a refusal response if the information in the request is matched with the information in the history and the network sharing blacklist, and returning a receiving response if the information in the request is not matched with the information in the network sharing blacklist.
According to another aspect of the present invention, in step S7, data is backed up in a memory module, the memory module being composed of an array of memory cells, the memory cells including: the N-type substrate is provided with a first part and a second part which are in a strip shape and are doped by P type, wherein the upper surfaces of the first part and the second part are on the same plane with other parts of the upper surface of the N-type substrate; forming a conductive channel portion between the first portion and the second portion; forming a hollow semiconductor insulating layer with a section in a 'return' shape above the floating gate, and generating a control electrode above the semiconductor insulating layer, wherein the control electrode is positioned in the center of the semiconductor insulating layer with the section in the 'return' shape, the semiconductor insulating layer with the 'return' shape except the control electrode is arranged around the control electrode, the floating gate, the insulating layer and the control electrode are sequentially overlapped in the vertical direction and are separated by the insulating layer, and the stack formed by the three parts is vertically parallel to the word line, is adjacent to the word line and is insulated; on the other side of the stack opposite to the word line is an erase electrode which is vertically T-shaped in process and is positioned above the second part and partially overlapped with the floating gate in the vertical direction; the word line is above the first part and partially overlaps with the first part in the vertical direction; the stack partially overlaps the second portion in a vertical direction; the stack and the word lines and the erasing electrodes positioned at two sides of the stack are insulated; the first part is connected with the bit line of the memory cell, and the second part is a source line; the structure is used as a memory cell, and the memory cell and an adjacent memory cell are in a symmetrical structure, share a source line and an erasing pole, namely share the source line and the T-shaped erasing pole as the center and are symmetrical left and right, and the two memory cells are used as subsets to be used as memory units of the memory device, wherein the memory units are larger than the memory cells; from the top view of the process, the deposition surfaces of the shapes of the first part and the second part are square, and in the storage unit taking the two storage units as subsets, the area of the deposition surface of the first part of the two storage units is larger than that of the deposition surface of the shared second part of the two storage units; the side length of the square is integral multiple of the characteristic size so as to facilitate process integration; by designing in this way, in particular the vertical overlap of the first portion with the word line portion, the vertical overlap of the second portion with the erase pole, the shared second portion and the erase pole.
According to another aspect of the present invention, the backing up data in the first area in step S7 and the local backup entity building and saving a mapping relationship in step S8, and performing a redundancy operation on the backed up data in step S9 and checking the integrity and reliability of the data with higher level in step S10 comprise: scanning and detecting bad storage units in a first area, if the number of the bad storage units in one row of the storage units is larger than or equal to a third threshold value, replacing the whole row according to a storage configuration strategy, recording the identification of the row into a state list, reading a first data file in a buffer page by page, backing up the first data file, simultaneously performing scanning detection of the next row in parallel, and then performing redundancy, wherein a redundancy processing module in a local backup entity calculates redundancy information and a cyclic redundancy check code from the data file, enables the data file to be reproduced according to the redundancy information and the cyclic redundancy check code, stores the cyclic redundancy check code in a first redundancy subarea, closes an access channel of the check code, and stores the mapping relation between a data file profile and an address in the first mapping subarea; for the data backup of the second area, the corresponding data file can be directly stored in a second storage subarea in the second area, and the mapping relation between the corresponding data file profile and the address is stored in a second mapping subarea; and due to the importance of verifying higher level data, the integrity and reliability of the higher level data needs to be verified.
According to another aspect of the present invention, in step S3, the terminal transmitting data to the local backup entity includes: the terminal transmits data to the local backup entity through a wired or wireless link, and the data is processed by the following steps before transmission: dividing data of a file into a plurality of blocks, wherein the ratio of the number of bits of the data bits in the blocks to the number of bits of one page of a storage unit of a local backup entity is 1: 2MWherein M is a positive integer, the digit of the last block is the residual value after the file is blocked, and each block comprises a check digit; m is 2 or 4.
According to another aspect of the present invention, in step S4, the aggregating the data by the local backup entity includes: the local backup entity receives the data, checks the partitioned data one by one, gathers the data bits of the passed blocks to form a complete block cluster taking the bit number of one page as a unit, and separately buffers the data according to different files.
According to another aspect of the present invention, in step S5, the local backup entity performs a duplicate checking on the data; the local backup entity extracts at least one attribute of the mirror image of the data file, compares the attribute with a profile table of the local backup entity, compares the file step by step if the attribute is in accordance with the attribute in the profile table, and proceeds to step S6 if the attribute is in accordance with the attribute in the profile table, and advances to step S6 if one of the attributes is not in accordance; if the attributes do not match, the next step is directly entered.
According to another aspect of the present invention, in step S6, the ranking of the data files by the local backup entity includes: according to the importance, weighted value and priority of the data files, the local backup entity performs weighted summation on different data files, sorts the data files according to the summation result, divides the data files with the summation result larger than or equal to a first threshold value into a first grade, divides the data files with the summation result larger than or equal to a second threshold value in the residual data file results into a second grade, and sorts the data files by analogy; if the data files are divided into two grades, the data files with the summation result being larger than or equal to the first threshold value are divided into a first grade, and the rest data files are divided into a second grade.
According to another aspect of the present invention, in step S7, the local backup entity backing up data of different levels on the storage module according to the ranking result comprises: for data with higher level, backing up the data in the first area; for the data with lower level, backing up the data in the second area; the first region comprises a first storage subarea, a first redundancy subarea and a first mapping subarea, wherein the ratio of the first storage subarea, the first redundancy subarea and the first mapping subarea is 2U：2V: 1, wherein U and V are both positive integers of 4 or more, and U: v is a positive integer of a fixed value 2LWherein L is a positive integer greater than or equal to 2; the second region comprises a second storage sub-region and a second mapping sub-region, wherein the ratio of the two is 2P: 1, wherein P is a positive integer greater than or equal to 4; after the backup, the profile and address of the data file and the application system environment of the backup are recorded in the index table.
According to another aspect of the present invention, if there is a repetition in step S5, only the mapping relationship between the data file and the backup address is recorded, the same data flag is set, and the data file in the buffer is cleared.
Drawings
Embodiments of the invention are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which like reference numerals refer to similar elements and in which:
fig. 1 illustrates a flow chart of a method of locally backing up data, according to an exemplary embodiment of the invention.
Detailed Description
In the following description, reference is made to the accompanying drawings that show, by way of illustration, several specific embodiments. It will be understood that: other embodiments are contemplated and may be made without departing from the scope or spirit of the present disclosure. The following detailed description is, therefore, not to be taken in a limiting sense.
Fig. 1 illustrates a flow chart of a method of locally backing up data, according to an exemplary embodiment of the invention.
In step S1, the terminal sends a backup request to the local backup entity;
in step S2, the local backup entity verifies the terminal identity and returns a response;
in step S3, the terminal transmits data to the local backup entity;
in step S4, the local backup entity aggregates the data;
in step S5, the local backup entity performs a duplicate checking on the data;
in step S6, the local backup entity ranks the data;
in step S7, the local backup entity backs up the data of different levels on the storage module according to the grading result;
in step S8, the local backup entity constructs and saves a mapping relationship;
in step S9, a redundancy operation is performed on the backed up data; and
in step S10, the integrity and reliability of the higher-level data is checked.
Specifically, in step S1, the sending, by the terminal, the backup request to the local backup entity includes: the terminal sends a backup request to a local backup entity through a wired or wireless link, wherein the request comprises a user ID, a profile type of data to be transmitted and the like.
Specifically, in step S2, the local backup entity verifying the terminal identity and returning a response includes: and traversing the history list by the local backup entity, checking the information in the request one by one for consistency with the information in the history and the network sharing blacklist, returning a refusal response if the information in the request is matched with the information in the history and the network sharing blacklist, and returning a receiving response if the information in the request is not matched with the information in the network sharing blacklist.
Specifically, in step S3, the transmitting, by the terminal, the data to the local backup entity includes: the terminal transmits data to the local backup entity through a wired or wireless link, and the data is processed by the following steps before transmission: dividing data of a file into a plurality of blocks, wherein the ratio of the number of bits of the data bits in the blocks to the number of bits of one page of a storage unit of a local backup entity is 1: 2MWherein M is a positive integer, the digit of the last block is the residual value after the file is blocked, and each block comprises a check digit; preferably, M is 2 or 4.
Specifically, in step S4, the aggregating the data by the local backup entity includes: the local backup entity receives the data, checks the partitioned data one by one, gathers the data bits of the passed blocks to form a complete block cluster taking the bit number of one page as a unit, and separately buffers the data according to different files.
Specifically, in step S5, the local backup entity performs a duplicate checking on the data; the local backup entity extracts at least one attribute of the mirror image of the data file, compares the attribute with a profile table of the local backup entity, compares the file step by step if the attribute is in accordance with the attribute in the profile table, and proceeds to step S6 if the attribute is in accordance with the attribute in the profile table, and advances to step S6 if one of the attributes is not in accordance; if the attributes do not match, the next step is directly entered.
Specifically, in step S6, the ranking of the data files by the local backup entity includes: according to the importance, weighted value and priority of the data files, the local backup entity performs weighted summation on different data files, sorts the data files according to the summation result, divides the data files with the summation result larger than or equal to a first threshold value into a first grade, divides the data files with the summation result larger than or equal to a second threshold value in the residual data file results into a second grade, and sorts the data files by analogy. If the data files are divided into two grades, the data files with the summation result being larger than or equal to the first threshold value are divided into a first grade, and the rest data files are divided into a second grade.
Specifically, in step S7, according to the ranking result, the local backup entity backing up data of different levels on the storage module includes: for data with higher level, backing up the data in the first area; for the data with lower level, backing up the data in the second area; the first region comprises a first storage subarea, a first redundancy subarea and a first mapping subarea, wherein the ratio of the first storage subarea, the first redundancy subarea and the first mapping subarea is 2U：2V: 1, wherein U and V are both positive integers of 4 or more, and U: v is a positive integer of a fixed value 2LWherein L is a positive integer greater than or equal to 2; the second region comprises a second storage sub-region and a second mapping sub-region, wherein the ratio of the two is 2P: 1, wherein P is a positive integer greater than or equal to 4; after the backup, the profile and address of the data file and the application system environment of the backup are recorded in the index table.
If there is a repetition in step S5, only the mapping relationship between the data file and the backup address is recorded, the same data flag is set, and the data file in the buffer is cleared.
Specifically, the memory module in step S7 is composed of a memory cell array, the memory cell including: the N-type substrate is provided with a first part and a second part which are in a strip shape and are doped by P type, wherein the upper surfaces of the first part and the second part are on the same plane with other parts of the upper surface of the N-type substrate; forming a conductive channel portion between the first portion and the second portion; forming a hollow semiconductor insulating layer with a section in a 'return' shape above the floating gate, and generating a control electrode above the semiconductor insulating layer, wherein the control electrode is positioned in the center of the semiconductor insulating layer with the section in the 'return' shape, the semiconductor insulating layer with the 'return' shape except the control electrode is arranged around the control electrode, the floating gate, the insulating layer and the control electrode are sequentially overlapped in the vertical direction and are separated by the insulating layer, and the stack formed by the three parts is vertically parallel to the word line, is adjacent to the word line and is insulated; the other side of the stack opposite to the word line is provided with an erasing pole which is vertically T-shaped in process and is positioned above the second part and partially overlapped with the floating gate in the vertical direction, and the special structure of the T-shaped and partially overlapped can facilitate the process integration level and alignment of the device, reduce the power consumption of the device and improve the energy utilization rate of unit area; the word line is above the first part and partially overlaps with the first part in the vertical direction; the stack partially overlaps the second portion in a vertical direction; the stack and the word lines and the erasing electrodes positioned at two sides of the stack are insulated; the first part is connected with the bit line of the memory cell, and the second part is a source line; the structure is used as a memory cell, and is in a symmetrical structure with an adjacent memory cell, and shares a source line and an erasing pole, namely the source line and the erasing pole are in bilateral symmetry with each other by taking the shared source line and the T-shaped erasing pole as the center, and further the two memory cells are taken as subsets to be used as memory units of the memory device, wherein the memory units are larger than the memory cells. The deposition surface of the first part and the second part is square from the top view of the process, and in the storage unit taking the two storage units as the subsets, the area of the deposition surface of the first part of the two storage units is larger than that of the deposition surface of the second part shared by the two storage units. The side length of the square is integral multiple of the characteristic size, so that the process integration is facilitated. By means of the design, particularly, the first part is vertically overlapped with the word line part, the second part is vertically overlapped with the erasing pole, and the shared second part and the erasing pole can improve the integration level of the storage device; in addition, the wiring of the shared structure is reduced, and the subsequent reading, writing and erasing speeds are greatly improved.
Specifically, the backing up data in the first area in step S7 and the local backup entity building and saving the mapping relationship in step S8, and performing redundancy operation on the backed up data in step S9 and checking the integrity and reliability of the data with higher level in step S10 include: scanning and detecting bad storage units in a first area, if the number of the bad storage units in one row of the storage units is larger than or equal to a third threshold value, replacing the whole row according to a storage configuration strategy, recording the identification of the row into a state list, reading a first data file in a buffer page by page, simultaneously executing scanning and detecting of the next row in parallel, and then executing redundancy, wherein a redundancy processing module in a local backup entity calculates redundancy information and a cyclic redundancy check code from the data file, enables the data file to be reproduced according to the redundancy information and the cyclic redundancy check code, stores the cyclic redundancy check code in a first redundancy subarea, closes an access channel of the check code, and stores the mapping relation between a data file profile and an address in the first mapping subarea; for the data backup of the second area, the corresponding data file can be directly stored in the second storage subarea of the second area, and the mapping relation between the corresponding data file profile and the address is stored in the second mapping subarea. And due to the importance of verifying higher level data, the integrity and reliability of the higher level data needs to be verified. Through the operation, the utilization rate of processing resources is improved, and the safety, the integrity and the stability of data backup are ensured.
In summary, in the technical solution of the present invention, by using a method for locally backing up data, the security and reliability of data can be ensured, the cost is saved, the utilization rate of data storage resources and processing resources is improved, repeated backup of data with repeated contents is avoided, the physical space and power consumption are reduced, the integration level is improved, and the read-write-erase speed is improved.
It will be understood that: the examples and embodiments of the invention may be implemented in hardware, software, or a combination of hardware and software. As mentioned above, any body performing this method may be stored, for example, in the form of volatile or non-volatile storage, for example, a storage device, like a ROM, whether erasable or rewritable or not, or in the form of memory, such as for example a RAM, a memory chip, a device or an integrated circuit, or on an optically or magnetically readable medium, such as for example a CD, a DVD, a magnetic disk or a magnetic tape. It will be understood that: storage devices and storage media are examples of machine-readable storage suitable for storing one or more programs that, when executed, implement examples of the present invention. Examples of the present invention may be conveyed electronically via any medium, such as a communications signal carried by a wired or wireless coupling, and the examples contain the same where appropriate.
It should be noted that: because the invention solves the technical problem of ensuring the safety and reliability of data, adopts the technical means which can be understood by technicians in the technical field of computers according to the teaching after reading the specification, and obtains the beneficial technical effects of saving cost, improving the utilization rate of data storage resources and processing resources, avoiding repeated backup of data with repeated contents, reducing physical space and power consumption, improving integration level and improving read-write erasing speed, the scheme claimed in the appended claims belongs to the technical scheme in the meaning of patent law. Furthermore, the solution claimed in the appended claims has utility since it can be manufactured or used in industry.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Unless expressly stated otherwise, each feature disclosed is one example only of a generic series of equivalent or similar features. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A method of locally backing up data, comprising:
in step S1, the terminal sends a backup request to the local backup entity;
in step S2, the local backup entity verifies the terminal identity and returns a response;
in step S3, the terminal transmits data to the local backup entity;
in step S4, the local backup entity aggregates the data;
in step S5, the local backup entity performs a duplicate checking on the data;
in step S6, the local backup entity ranks the data;
in step S7, the local backup entity backs up the data of different levels on the storage module according to the grading result;
in step S8, the local backup entity constructs and saves a mapping relationship;
in step S9, a redundancy operation is performed on the backed up data; and
in step S10, the integrity and reliability of the higher-level data is checked;
in step S7, the data is backed up in a storage module, where the storage module is composed of a storage cell array, and the storage cell includes: the N-type substrate is provided with a first strip-shaped P-type doped part and a second strip-shaped P-type doped part below the upper surface of the N-type substrate, wherein the upper surfaces of the first part and the second part are on the same plane with other parts of the upper surface of the N-type substrate; forming a conductive channel portion between the first portion and the second portion; a word line and a floating gate which are adjacent to each other in position are arranged right above the first portion and the second portion, a hollow semiconductor insulating layer with a section in a shape of 'loop' is formed above the floating gate, a control electrode is formed above the semiconductor insulating layer, wherein the control electrode is arranged in the center of the semiconductor insulating layer in the shape of 'loop' in the section, the semiconductor insulating layer except the control electrode in the shape of 'loop' is arranged around the control electrode, the floating gate, the insulating layer and the control electrode are sequentially overlapped in the vertical direction and are isolated through the insulating layer, and the stack formed by the three is vertical to and adjacent to the word line but is insulated from the word line; on the other side of the stack opposite to the word line is an erase electrode which is vertically T-shaped in process and is positioned above the second part and partially overlapped with the floating gate in the vertical direction; the word line is above the first part and partially overlaps with the first part in the vertical direction; the stack partially overlaps the second portion in a vertical direction; the stack and the word lines and the erasing electrodes positioned at two sides of the stack are insulated; the first part is connected with the bit line of the memory cell, and the second part is a source line; the structure is used as a memory cell, and the memory cell and an adjacent memory cell are in a symmetrical structure, share a source line and an erasing pole, namely share the source line and the T-shaped erasing pole as the center and are symmetrical left and right, and the two memory cells are used as subsets to be used as memory units of the memory device, wherein the memory units are larger than the memory cells; from the top view of the process, the deposition surfaces of the shapes of the first part and the second part are square, and in the storage unit taking the two storage units as subsets, the area of the deposition surface of the first part of the two storage units is larger than that of the deposition surface of the shared second part of the two storage units; the side length of the square is integral multiple of the characteristic size, so that the process integration is facilitated.
2. The method for local backup of data as claimed in claim 1, wherein the step S1, the terminal sending the backup request to the local backup entity includes: the terminal sends a backup request to a local backup entity through a wired or wireless link, wherein the request comprises a user ID, a profile type of data to be transmitted and the like; and
in step S2, the local backup entity verifying the terminal identity and returning a response includes: and traversing the history list by the local backup entity, checking the information in the request one by one for consistency with the information in the history and the network sharing blacklist, returning a refusal response if the information in the request is matched with the information in the history and the network sharing blacklist, and returning a receiving response if the information in the request is not matched with the information in the network sharing blacklist.
3. The method of local backup of data as claimed in claim 2, wherein the step S7 backups the data in the first area and the step S8 the local backup entity builds and saves the mapping relationship, and the step S9 performs redundancy operation on the backed up data and the step S10 checks the integrity and reliability of the higher level data comprises: scanning and detecting bad storage units in a first area, if the number of the bad storage units in one row of the storage units is larger than or equal to a third threshold value, replacing the whole row according to a storage configuration strategy, recording the identification of the row into a state list, reading a first data file in a buffer page by page, backing up the first data file, simultaneously performing scanning detection of the next row in parallel, and then performing redundancy, wherein a redundancy processing module in a local backup entity calculates redundancy information and a cyclic redundancy check code from the data file, enables the data file to be reproduced according to the redundancy information and the cyclic redundancy check code, stores the cyclic redundancy check code in a first redundancy subarea, closes an access channel of the check code, and stores the mapping relation between a data file profile and an address in the first mapping subarea; for the data backup of the second area, the corresponding data file can be directly stored in a second storage subarea in the second area, and the mapping relation between the corresponding data file profile and the address is stored in a second mapping subarea; and due to the importance of verifying higher level data, the integrity and reliability of the higher level data needs to be verified.
4. The method for local backup of data according to claim 2 or 3, wherein in step S3, the terminal transmitting data to the local backup entity comprises: the terminal transmits data to the local backup entity through a wired or wireless link, and the data is processed by the following steps before transmission: dividing data of a file into a plurality of blocks, wherein the ratio of the number of bits of the data bits in the blocks to the number of bits of one page of a storage unit of a local backup entity is 1: 2MWherein M is a positive integer, the digit of the last block is the residual value after the file is blocked, and each block comprises a check digit; m is 2 or 4.
5. A method of locally backing up data according to claim 2 or 3, wherein in step S4, the local backup entity aggregating the data includes: the local backup entity receives the data, checks the partitioned data one by one, gathers the data bits of the passed blocks to form a complete block cluster taking the bit number of one page as a unit, and separately buffers the data according to different files.
6. A method of local backup of data according to claim 2 or 3, wherein in step S5, the local backup entity performs a duplicate checking on the data; the local backup entity extracts at least one attribute of the mirror image of the data file, compares the attribute with a profile table of the local backup entity, compares the file step by step if the attribute is in accordance with the attribute in the profile table, and proceeds to step S6 if the attribute is in full accordance with the attribute, and exits to step S6 if one of the attributes is not in accordance with the profile table; if the attributes do not match, the next step is directly entered.
7. A method of local backup of data as claimed in claim 2 or 3, wherein in step S6, the local backup entity ranking the data files comprises: according to the importance, weighted value and priority of the data files, the local backup entity performs weighted summation on different data files, sorts the data files according to the summation result, divides the data files with the summation result larger than or equal to a first threshold value into a first grade, divides the data files with the summation result larger than or equal to a second threshold value in the residual data file results into a second grade, and sorts the data files by analogy; if the data files are divided into two grades, the data files with the summation result being larger than or equal to the first threshold value are divided into a first grade, and the rest data files are divided into a second grade.
8. The method for local backup of data as claimed in claim 2 or 3, wherein in step S7, the local backup entity backing up data of different levels on the storage module according to the ranking result comprises: for data with higher level, backing up the data in the first area; for the data with lower level, backing up the data in the second area; the first area comprises a first storage subarea, a first redundancy subarea and a first mapping subarea, wherein the size of data volume stored by the first storage subarea, the first redundancy subarea and the first mapping subareaHas a ratio of 2U：2V: 1, wherein U and V are both positive integers of 4 or more, and U: v is a positive integer of a fixed value 2LWherein L is a positive integer greater than or equal to 2; the second region comprises a second storage subarea and a second mapping subarea, wherein the ratio of the sizes of the data volumes stored by the second storage subarea and the second mapping subarea is 2P: 1, wherein P is a positive integer greater than or equal to 4; after the backup, the profile and address of the data file and the application system environment of the backup are recorded in the index table.
9. A method of local backup of data according to claim 2 or 3, wherein if there is a duplication in step S5, only the mapping relationship between the data file and the backup address is recorded, and the same data identification is set, and the data file in the buffer is cleared.
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| CN108664352B (en) * | 2018-05-11 | 2022-07-12 | 卡斯柯信号有限公司 | Hot standby system education data verification method based on off-line simulation |
| CN109857590B (en) * | 2018-12-24 | 2023-10-31 | 深圳供电局有限公司 | Data backup system of power dispatching center |
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