CN101751478A - File backup method and system - Google Patents

File backup method and system Download PDF

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Publication number
CN101751478A
CN101751478A CN201010112534A CN201010112534A CN101751478A CN 101751478 A CN101751478 A CN 101751478A CN 201010112534 A CN201010112534 A CN 201010112534A CN 201010112534 A CN201010112534 A CN 201010112534A CN 101751478 A CN101751478 A CN 101751478A
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files
blocks
file
backup
rule
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CN201010112534A
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Chinese (zh)
Inventor
曹其顺
王洪亮
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Inspur Beijing Electronic Information Industry Co Ltd
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Inspur Beijing Electronic Information Industry Co Ltd
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Priority to CN201010112534A priority Critical patent/CN101751478A/en
Publication of CN101751478A publication Critical patent/CN101751478A/en
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Abstract

The invention discloses a file backup method and a system, which aim at saving the memory space required by file backup, wherein the method mainly comprises the following steps: setting up splitting rules; splitting the files into a plurality of file blocks to back up according to the splitting rules; when the file is backuped again, if the file is modified, splitting the modified file to generate the modified file block based on the splitting rules; and backuping the modified file block. Compared with the prior art, the invention saves the memory space required by the file backup and the backup time, and improves the memory efficiency.

Description

A kind of file backup method and system
Technical field
The present invention relates to file memory method, relate in particular to a kind of file backup method and system.
Background technology
When going deep into the every aspect of modern work and life day by day along with electronic equipments such as computing machines, the user of equipment such as all computing machines such as modern enterprise exists the demand of file backup.For electronic equipment, any data all are to embody with the form of file.Along with computer technology and development of internet technology, virus, hacker and wooden horse etc. are threatening computer documents safety constantly.
Computer documents is lost or during the damage that can't reverse, can be brought the user heavy data disaster, for enterprise even danger such as bankruptcy can take place.In this case, file backup seems and is even more important.
Fig. 1 is the schematic flow sheet of file backup method embodiment in the prior art.As shown in Figure 1, this flow process mainly comprises the steps:
Step S110 backs up original, at first produces backup file 1;
Step S120, original carried out first revision after, produce the backup file 2 that is different from backup file 1;
Step S130; After original after the first revision revised once more, produce the backup file 3 that is different from backup file 2; If follow-up also have modification to original, then still can produce new backup file.
File backup pattern of the prior art, it backs up for the first time with the n time backup all is to utilize the principle of file copy that file is backed up, if wherein do not need to return to certain time point, the then new backup file that produces can directly cover previous backup file, if desired file is returned to a certain backup time, then each new complete backup file that produces, a backup file that increases newly exactly.
No matter file backup of the prior art carries out how many times, all is to back up fully, promptly produces repeatedly backup file.Along with the accumulation of time, the backup file that is produced is also more and more, can more and more waste storage resources.
Summary of the invention
Technical matters to be solved by this invention is that a kind of file backup method and system need be provided, and has saved and has backed up required storage space.
In order to solve the problems of the technologies described above, the invention provides a kind of file backup method, comprising:
Rule is cut apart in setting;
According to the described rule of cutting apart described file is cut apart, generated some blocks of files and backup;
When backing up described file once more,, then amended file is cut apart, generated the blocks of files at described modification place based on the described rule of cutting apart if described file is modified;
Back up the blocks of files at described modification place.
Preferably, this method further comprises:
When backing up the blocks of files at described some blocks of files or described modification place, write down the BACKUP TIME of each blocks of files.
Preferably, when described file or described amended file are carried out described cutting apart, for each blocks of files generates corresponding carve information; Wherein, described carve information and BACKUP TIME are used to recover described file or described amended file.
Preferably, described carve information comprises origin identification, end sign and the block identification of blocks of files; Wherein, described block identification is used to distinguish blocks of files.
Preferably, cut apart the step that rule is cut apart amended file, comprising based on described:
By contrasting the original piece of determining described modification place, cut apart rule and, described original piece is carried out described cutting apart according to described modification based on described.
In order to solve the problems of the technologies described above, the present invention also provides a kind of file backup system, comprising:
Module is set, is used for being provided with and cuts apart rule;
Judge module judges whether described file is modified when being used for backing up once more described file;
Cut apart module, be used for cutting apart rule described file being cut apart, generate some blocks of files according to described; And when being used for backing up once more described file and described file and being modified, based on the described rule of cutting apart amended file is cut apart, generate the blocks of files at described modification place;
Backup module is used to back up the blocks of files at described some blocks of files and described modification place.
Preferably, when described backup module is used to back up the blocks of files at described some blocks of files or described modification place, write down the BACKUP TIME of each blocks of files.
Preferably, described when cutting apart module and being used for that described file or described amended file carried out described cutting apart, for each blocks of files generates corresponding carve information; Wherein, described carve information and BACKUP TIME are used to recover described file or described amended file.
Preferably, the described described carve information of cutting apart the module generation comprises that the origin identification of blocks of files, end identify and block identification; Wherein, described block identification is used to distinguish blocks of files.
Preferably, the described module of cutting apart is used for cutting apart rule and according to described modification, described original piece being carried out described cutting apart based on described by contrasting the original piece at definite described modification place.
Compared with prior art, at least one embodiment of the present invention has saved the required storage space of file backup at least, has saved storage time, has improved storage efficiency.Additional embodiments of the present invention has also been protected safety of files, integrality and restorability, utilizes the incremental backup of file, can realize the backup of file fully, has kept the consistance and the security of file, has saved system's expenditure.
Other features and advantages of the present invention will be set forth in the following description, and, partly from instructions, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in instructions, claims and accompanying drawing.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of instructions, is used from explanation the present invention with embodiments of the invention one, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the schematic flow sheet of file backup method embodiment in the prior art;
Fig. 2 is the schematic flow sheet of the inventive method embodiment;
Fig. 3 is the operation chart of the inventive method application example;
Fig. 4 is the composition synoptic diagram of system embodiment of the present invention.
Embodiment
Describe embodiments of the present invention in detail below with reference to drawings and Examples, how the application technology means solve technical matters to the present invention whereby, and the implementation procedure of reaching technique effect can fully understand and implements according to this.
Need to prove that if do not conflict, each feature among the embodiment of the invention and the embodiment can mutually combine, all within protection scope of the present invention.In addition, can in computer system, carry out in the step shown in the process flow diagram of accompanying drawing such as a set of computer-executable instructions, and, though there is shown logical order in flow process, but in some cases, can carry out step shown or that describe with the order that is different from herein.
Core concept of the present invention is that whole file division is become some blocks of files, after file is modified, revises corresponding blocks of files with this in backup this document.So, the blocks of files that is not modified just need not back up again, has improved backup efficient, has saved storage space.
Fig. 2 is the schematic flow sheet of the inventive method embodiment.As shown in Figure 2, the inventive method mainly comprises the steps:
Step S210 is provided with and cuts apart rule;
Step S220 is cut apart file according to the set rule of cutting apart, generate some blocks of files and with the corresponding carve information of each blocks of files, the carve information of each blocks of files is included in respectively in corresponding each blocks of files;
Step S230 backs up this some blocks of files, writes down the BACKUP TIME of each blocks of files;
Step S240 during backup file, judges whether whole file is modified, and being then changes step S250, otherwise waits for next file backup once more;
Step S250, determine the interior perhaps position of file modification by the otherness contrast, based on the aforesaid rule of cutting apart, and according to the interior perhaps position of this modification, amended file is cut apart, modification is limited among limited some blocks of files as far as possible, makes the remaining paper piece can not change; After amended file cut apart, generate this modification place blocks of files and with the corresponding carve information of the blocks of files at each this modification place, the carve information in the blocks of files at this modification place is included in the blocks of files at this modification place; The blocks of files that the blocks of files at this modification place and all the other do not change can be formed amended whole file together;
Step S260 backs up the blocks of files at this modification place, and the BACKUP TIME of the blocks of files at this modification place of record backup.
Among the above-mentioned steps S210, when this being set cutting apart rule, can consider several complete relatively in file parts are divided into a blocks of files, also be that set this cut apart the length of relevant document piece in the rule, can be for fixed length also can be random length, the length of blocks of files is unequal in the present embodiment also is that blocks of files is a random length.The carve information of blocks of files (comprising the blocks of files of revising the place) comprises the origin identification of this document piece, finish sign and block identification, this origin identification is used for the reference position of identification document piece, this end sign is used to identify the end position of this document piece, this block identification is used to distinguish each blocks of files, and with the origin identification of this document piece, finish the foundation that sign and BACKUP TIME recover as file together, such as needs file is returned to certain constantly, then determine that according to BACKUP TIME all blocks of files of this document are (if file has modification before this moment, then comprise the blocks of files of revising the place) afterwards, again according to the block identification of each blocks of files, just can distinguish each blocks of files order hereof, origin identification and end sign according to this order and this document piece can reassemble into each blocks of files a complete file.
The above-mentioned setting of cutting apart relevant document block length in the rule preferably can be set to random length, can reduce the file division number of times, improves storage efficiency, saves storage space.Such as, increase by a content in the somewhere of file, then the meeting of whole file is elongated, if blocks of files is set to fixed length, then the file content after this beginning all needs to cut apart again according to cutting apart rule again, obtain the blocks of files that new blocks of files cuts apart before all being different from (even if the content that increases newly just meets the length of one or several blocks of files, but the block identification of subsequent file piece also can change), these new blocks of files all need to back up again (needing at least from new backup block sign).If blocks of files is set to random length, then can only back up the blocks of files at the content place of this increase, the remaining paper piece does not all need to back up again, does not more need the file content after this increase is cut apart again.
When more above-mentioned newly-increased place's content came the comparison document block length to be set to the difference of fixed length or random length, under the situation of understanding more complicated file modification, the length of cutting apart relevant document piece in the rule was that the existing advantage of random length just becomes apparent.
Writing down BACKUP TIME among above-mentioned steps S230 and the step S260, mainly is to be used for file is returned to when putting sometime, for same block identification, all selects up-to-date blocks of files before this time point to be used for the recovery of file.Such as, file need returned to up-to-date revision, then select the pairing BACKUP TIME of each block identification blocks of files the latest to carry out file and recover.Certainly, for the file backup of replaceability (when promptly backing up the file of redaction, the version of storage before the deletion), each block identification all only backs up up-to-date blocks of files, during the backup file piece, does not need to write down BACKUP TIME under this kind situation.
Among the above-mentioned steps S250, can determine that this revises the original piece at place, based on cutting apart rule and, the original piece being cut apart, generate this amended blocks of files then according to the interior perhaps position of this modification by otherness contrast.Cutting apart wherein to the original piece, can be to be divided into a new blocks of files, also can be to be divided into two or more new blocks of files, therefore, for revise at a place, the blocks of files at aforesaid this modification place may be a blocks of files, also may be two or more blocks of files.
Like this, general modification (mainly be meant and revise the less modification of front and back variation) just is limited to original piece inside, this modification does not exert an influence to the remaining paper piece, can only back up the blocks of files at this modification place when backing up once more, the remaining paper piece does not need to back up again, significantly reduce memory space compared to existing technology, also improved backup rate simultaneously.
For the modification situation that in a certain blocks of files, has increased a large amount of contents newly, can will revise the blocks of files at place and be divided into two or more blocks of files according to cutting apart rule, can guarantee that like this length of each blocks of files is unlikely to oversize (it is too big that the size of blocks of files is unlikely to).Certainly, the blocks of files at this new content place not being cut apart is feasible equally.In this case, the some blocks of files that split by a blocks of files are by origin identification, finish the position that sign and block identification can be determined some blocks of files place in amended file that this is split by a blocks of files.
Among the above-mentioned steps S250, block identification of the blocks of files at this modification place is identical with this block identification of revising before corresponding blocks of files, represent that with this these two blocks of files are the blocks of files that are positioned at same position before and after this document is revised, the blocks of files of using this modification place when in view of the above, file recovers replaces it preceding blocks of files.
When backing up this blocks of files of revising the place among the above-mentioned steps S260, can be the spreadability backup, also can be the backup of depositing mode in addition.Wherein the spreadability backup setting blocks of files that will revise the place is replaced the original piece at this modification place (this modification only is the modification of the partial content of certain blocks of files inside, if whole file only this place is revised, then the remaining paper piece does not all change), other deposits the backup of mode, be meant the storage of the blocks of files at this modification place, do not influence the storage that this revises pairing original piece.
Fig. 3 is the synoptic diagram of the inventive method one application example.In conjunction with embodiment illustrated in fig. 2, in the application example shown in Figure 3, before file modification, file division has been become n blocks of files according to cutting apart rule, among the figure respectively with blocks of files 1, blocks of files 2 ..., blocks of files n illustrates.After this document is revised, determine that by otherness contrast the content of this modification is positioned among the blocks of files 1, therefore based on cutting apart rule and should also being divided into n blocks of files by amended file according to this modification, among the figure respectively with blocks of files 1 ', blocks of files 2 ..., blocks of files n illustrates, wherein this document piece 1 ' is the file modification whereabouts, and expression this document piece 1 ' is different with this document piece 1.Wherein except this document piece 1 ' and this document piece 1 are different, remaining paper piece 2 ..., blocks of files n do not change, therefore during this amended file of backup, only back up this document piece 1 ' and get final product.Back up whole amended file with prior art and compare, technical solution of the present invention has been saved the needed spending of file backup (comprising time cost and storage space cost etc.), has improved backup efficient.
Fig. 4 is the composition synoptic diagram of system embodiment of the present invention.In conjunction with the inventive method embodiment shown in Figure 2 and application example shown in Figure 3, system embodiment shown in Figure 4 mainly comprises and module 410, judge module 420 are set, cut apart module 430 and backup module 440, wherein:
Module 410 is set, is used for being provided with and cuts apart rule; When this being set cutting apart rule, can consider one or several complete relatively in file parts are divided into a blocks of files;
Judge module 420 when being used for once more backup file, judges whether file is modified;
Cut apart module 430, with this module 410 is set and judge module 420 links to each other, being used for according to this module 410 set rule that cut apart being set cuts apart file, generate some blocks of files and with the corresponding carve information of each blocks of files, the carve information of each blocks of files is included in respectively in corresponding each blocks of files; Also be used for when judge module 420 is judged file and is modified, determine the interior perhaps position of file modification by the otherness contrast, and cut apart rule based on this, revise the interior perhaps position at place according to this, amended file is cut apart, modification is limited among limited some blocks of files as far as possible, makes the remaining paper piece can not change; After amended file cut apart, generate this modification place blocks of files and with the corresponding carve information of the blocks of files at each this modification place, the carve information in the blocks of files at this modification place is included in the blocks of files at this modification place; The blocks of files that the blocks of files at this modification place and all the other do not change can be formed amended whole file together;
Backup module 440 is cut apart module 430 with this and is linked to each other, and be used to back up this and cut apart the blocks of files (blocks of files that comprises this modification place) that module 430 is cut apart, and the BACKUP TIME of record backup this document piece (comprising the blocks of files of revising the place).
Wherein, the above-mentioned module of cutting apart is the carve information that blocks of files generates, the origin identification, end sign and the block identification that comprise this document piece, this origin identification is used for the reference position of identification document piece, this end sign is used to identify the end position of this document piece, this block identification is used to distinguish each blocks of files, and with the origin identification of this document piece, the foundation that end identifies and BACKUP TIME recovers as file.
Above-mentionedly cut apart the original piece that module 430 can be determined this modification place by otherness contrast, based on cutting apart rule and, the original piece being cut apart, generate this amended blocks of files then according to the interior perhaps position of this modification.Cutting apart wherein to the original piece, can be to be divided into a new blocks of files, also can be to be divided into two or more new blocks of files, therefore, for revise at a place, the blocks of files at aforesaid this modification place may be a blocks of files, also may be two or more blocks of files.
Like this, general modification (mainly be meant and revise the less modification of front and back variation) just is limited to original piece inside, and this modification does not exert an influence to the remaining paper piece.Can only back up the blocks of files at this modification place when backup module 440 carries out file backup once more, the remaining paper piece does not need to back up again, has significantly reduced memory space compared to existing technology, has improved backup rate simultaneously yet.
For the modification situation that in a certain blocks of files, has increased a large amount of contents newly, the above-mentioned module 430 of cutting apart can will be revised the blocks of files at place and be divided into two or more blocks of files according to cutting apart rule, can guarantee that like this length of each blocks of files is unlikely to oversize (it is too big that the size of blocks of files is unlikely to).Certainly, the blocks of files at this new content place not being cut apart is feasible equally.In this case, the some blocks of files that split by a blocks of files are by origin identification, finish the position that sign and block identification can be determined some blocks of files place in amended file that this is split by a blocks of files.
When above-mentioned backup module 440 backs up this blocks of files of revising the place, can be the spreadability backup, also can be the backup of depositing mode in addition.Wherein the spreadability backup setting blocks of files that will revise the place is replaced the original piece at this modification place (this modification only is the modification of the partial content of certain blocks of files inside, if whole file only this place is revised, then the remaining paper piece does not all change), other deposits the backup of mode, be meant the storage of the blocks of files at this modification place, do not influence the storage that this revises pairing original piece.
Traditional file backup technology is utilized the copy command of system, carries out file backup, and source file and backup file are consistent.When file backup, repeatedly backing up the backup file that is produced is a plurality of duplicates of the document, has increased the system resource expenditure, the storage resources of significant wastage system.Compared with prior art; the file backup technical scheme that the present invention proposes based on blocks of files; saved the required storage space of file backup; saved storage time; improved storage efficiency; when having realized the incremental backup of file, safety of files, integrality and restorability have also been protected.Utilize the incremental backup of file, can realize the backup of file fully, not only kept the consistance and the security of file, saved system's expenditure.
Need to prove, can in computer system, carry out in the step shown in the process flow diagram of accompanying drawing such as a set of computer-executable instructions, and, though there is shown logical order in flow process, but in some cases, can carry out step shown or that describe with the order that is different from herein.In addition, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the memory storage and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
Though the disclosed embodiment of the present invention as above, the embodiment that described content just adopts for the ease of understanding the present invention is not in order to limit the present invention.Technician in any the technical field of the invention; under the prerequisite that does not break away from the disclosed spirit and scope of the present invention; can do any modification and variation what implement in form and on the details; but scope of patent protection of the present invention still must be as the criterion with the scope that appending claims was defined.

Claims (10)

1. a file backup method is characterized in that, comprising:
Rule is cut apart in setting;
According to the described rule of cutting apart described file is cut apart, generated some blocks of files and backup;
When backing up described file once more,, then amended file is cut apart, generated the blocks of files at described modification place based on the described rule of cutting apart if described file is modified;
Back up the blocks of files at described modification place.
2. the method for claim 1 is characterized in that, this method further comprises:
When backing up the blocks of files at described some blocks of files or described modification place, write down the BACKUP TIME of each blocks of files.
3. method as claimed in claim 2 is characterized in that:
When described file or described amended file are carried out described cutting apart, for each blocks of files generates corresponding carve information;
Wherein, described carve information and BACKUP TIME are used to recover described file or described amended file.
4. method as claimed in claim 3 is characterized in that:
Described carve information comprises origin identification, end sign and the block identification of blocks of files;
Wherein, described block identification is used to distinguish blocks of files.
5. the method for claim 1 is characterized in that, cuts apart the step that rule is cut apart amended file based on described, comprising:
By contrasting the original piece of determining described modification place, cut apart rule and, described original piece is carried out described cutting apart according to described modification based on described.
6. a file backup system is characterized in that, comprising:
Module is set, is used for being provided with and cuts apart rule;
Judge module judges whether described file is modified when being used for backing up once more described file;
Cut apart module, be used for cutting apart rule described file being cut apart, generate some blocks of files according to described; And when being used for backing up once more described file and described file and being modified, based on the described rule of cutting apart amended file is cut apart, generate the blocks of files at described modification place;
Backup module is used to back up the blocks of files at described some blocks of files and described modification place.
7. system as claimed in claim 6 is characterized in that:
When described backup module is used to back up the blocks of files at described some blocks of files or described modification place, write down the BACKUP TIME of each blocks of files.
8. system as claimed in claim 7 is characterized in that:
Described when cutting apart module and being used for that described file or described amended file carried out described cutting apart, for each blocks of files generates corresponding carve information;
Wherein, described carve information and BACKUP TIME are used to recover described file or described amended file.
9. system as claimed in claim 8 is characterized in that:
The described described carve information of cutting apart the module generation comprises that the origin identification of blocks of files, end identify and block identification;
Wherein, described block identification is used to distinguish blocks of files.
10. system as claimed in claim 6 is characterized in that:
The described module of cutting apart is used for cutting apart rule and according to described modification, described original piece being carried out described cutting apart based on described by contrasting the original piece at definite described modification place.
CN201010112534A 2010-02-20 2010-02-20 File backup method and system Pending CN101751478A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102467419A (en) * 2010-11-10 2012-05-23 英业达股份有限公司 File backup method
CN104391954A (en) * 2014-11-27 2015-03-04 北京国双科技有限公司 Database log processing method and device
CN104714859A (en) * 2013-12-17 2015-06-17 南京壹进制信息技术有限公司 Rapid backup and recovery method of mass files
CN107908737A (en) * 2017-11-15 2018-04-13 中国银行股份有限公司 File declustering control method and device
CN107924397A (en) * 2015-12-31 2018-04-17 深圳配天智能技术研究院有限公司 A kind of file editing method and file editor
CN108459927A (en) * 2018-02-28 2018-08-28 北京奇艺世纪科技有限公司 A kind of data back up method, device and server
CN110019030A (en) * 2017-08-30 2019-07-16 北京京东尚科信息技术有限公司 Divide the method and apparatus of file
CN112506703A (en) * 2020-12-05 2021-03-16 广州技象科技有限公司 Backup method and device for configuration information of terminal of Internet of things
CN113360324A (en) * 2021-08-10 2021-09-07 北京华科海讯科技有限公司 Data backup device based on distributed file data

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102467419A (en) * 2010-11-10 2012-05-23 英业达股份有限公司 File backup method
CN104714859A (en) * 2013-12-17 2015-06-17 南京壹进制信息技术有限公司 Rapid backup and recovery method of mass files
CN104714859B (en) * 2013-12-17 2017-10-03 南京壹进制信息技术股份有限公司 A kind of quick backup of mass file and the method recovered
CN104391954A (en) * 2014-11-27 2015-03-04 北京国双科技有限公司 Database log processing method and device
CN107924397A (en) * 2015-12-31 2018-04-17 深圳配天智能技术研究院有限公司 A kind of file editing method and file editor
CN110019030A (en) * 2017-08-30 2019-07-16 北京京东尚科信息技术有限公司 Divide the method and apparatus of file
CN107908737A (en) * 2017-11-15 2018-04-13 中国银行股份有限公司 File declustering control method and device
CN108459927A (en) * 2018-02-28 2018-08-28 北京奇艺世纪科技有限公司 A kind of data back up method, device and server
CN108459927B (en) * 2018-02-28 2021-11-26 北京奇艺世纪科技有限公司 Data backup method and device and server
CN112506703A (en) * 2020-12-05 2021-03-16 广州技象科技有限公司 Backup method and device for configuration information of terminal of Internet of things
CN113360324A (en) * 2021-08-10 2021-09-07 北京华科海讯科技有限公司 Data backup device based on distributed file data
CN113360324B (en) * 2021-08-10 2021-11-30 北京华科海讯科技有限公司 Data backup device based on distributed file data

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Application publication date: 20100623