CN106708653A - Mixed tax administration data security protecting method based on erasure code and multi-copy - Google Patents

Mixed tax administration data security protecting method based on erasure code and multi-copy Download PDF

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CN106708653A
CN106708653A CN201611252092.8A CN201611252092A CN106708653A CN 106708653 A CN106708653 A CN 106708653A CN 201611252092 A CN201611252092 A CN 201611252092A CN 106708653 A CN106708653 A CN 106708653A
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data
correcting
eleting codes
tax
many
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CN106708653B (en
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崔莹
陈升东
陈健彬
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Guangzhou Institute of Software Application Technology Guangzhou GZIS
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Guangzhou Institute of Software Application Technology Guangzhou GZIS
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00Error detection; Error correction; Monitoring
    • G06F11/07Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/08Error detection or correction by redundancy in data representation, e.g. by using checking codes
    • G06F11/10Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00Error detection; Error correction; Monitoring
    • G06F11/07Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/14Error detection or correction of the data by redundancy in operation
    • G06F11/1402Saving, restoring, recovering or retrying
    • G06F11/1446Point-in-time backing up or restoration of persistent data
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/60Protecting data
    • G06F21/62Protecting access to data via a platform, e.g. using keys or access control rules
    • G06F21/6218Protecting access to data via a platform, e.g. using keys or access control rules to a system of files or objects, e.g. local or distributed file system or database

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Abstract

The invention discloses a mixed tax administration data security protecting method based on erasure code and multi-copy. The method comprises the following steps: while the tax administration data of a tax administration data distributed storage system is normal, starting the multi-copy and erasure code storage mode storage flow of the tax administration data; and while the tax administration data of the tax administration data distributed storage system is failure, starting the tax administration data fault-tolerance processing flow. The method is capable of executing the sub-mode storage by using the tax administration data features of different times, distributing the erasure coding task to different nodes, using the mode of copy first and erasure code second, comprehensively improving the security of the whole tax administration data and the data recovery performance, improving the coding performance of the whole system, and guaranteeing the data security before finishing the erasure coding.

Description

A kind of mixing tax big data method for security protection based on correcting and eleting codes with many copies
Technical field
The present invention relates to computer data management technical field, and in particular to a kind of mixing based on correcting and eleting codes with many copies Tax big data method for security protection.
Background technology
With the development that deepens continuously of economic globalization and China's economy, China's taxpayer's quantity rapidly increases, the tax category are got over Hair is abundant, and in face of increasingly huger tax data, distributed storage is a storage scheme for main flow, with sexual valence very high Than and autgmentability.For tax data, its problem of data safety in distributed storage environment is the pass for being worth research Key point.Distributed memory system includes great deal of nodes, and node failure or outside invasion are likely to cause data imperfect.For Loss of data is avoided, generally using the fault-tolerance approach based on redundant data, redundancy fault-tolerant mainly there are two kinds:One kind is many copies It is fault-tolerant, by replicate redundant data carry out it is fault-tolerant;Another kind is fault-tolerant correcting and eleting codes, is held by encoding generation redundant data It is wrong.
The fault-tolerance approach being widely used at present is fault-tolerant based on many copies for replicating:By former data duplication into c copy, When c data trnascription then being distributed into c different memory node, so any c-1 node failure, each data is at least Also 1 copy is present.Many copies are fault-tolerant have the advantages that it is simple easily realize, computing cost is few, data access performance is good.But Many copies are fault-tolerant also to be had the shortcomings that to protrude very much:Storage overhead is very big.It is this for tax data very huge in itself, and always Keep for the data of rapid growth, many copies based on duplication are fault-tolerant and do not apply to.
With the growth of data explosion formula, correcting and eleting codes are fault-tolerant because it can be identical even with much lower storage overhead offer Data reliability higher, also begins to turn into study hotspot in recent years.The fault-tolerant strategy of correcting and eleting codes is:One data is divided into c Individual data block, is then encoded into c data block n (n > c) individual encoding block and is distributed in n different disk, so when node loses During effect, as long as the data also have c encoding block to exist, it becomes possible to decode former data to come.With three copies being widely used Fault-tolerant networks are compared, and memory space consumption can both be reduced by 53% by RS correcting and eleting codes, also fault-tolerant ability can be improved into one simultaneously Times.Degraded performance when but the defect of correcting and eleting codes is data reconstruction, especially in distributed storage, because data reconstruction is needed Want multiple nodes to cooperate, inevitably bring substantial amounts of network resource consumption and computing resource to consume.For tax number For this distributed data, this will turn into the critical bottleneck of whole system performance.
The content of the invention
In view of this, in order to solve above mentioned problem of the prior art, the present invention proposes that one kind is secondary based on correcting and eleting codes and more This mixing tax big data method for security protection.
The present invention is solved the above problems by following technological means:
A kind of mixing tax big data method for security protection based on correcting and eleting codes with many copies, when tax data distribution is deposited When the tax data of storage system is normal, start many copies and correcting and eleting codes storage mode Stored Procedure of tax data;
When the tax data of tax data distributed memory system fails, start tax data fault-tolerant processing flow;
Many copies comprise the following steps with correcting and eleting codes storage mode Stored Procedure:
Step S11, tax data is temporally divided into historical data and Recent data, and the Recent data includes multiple Different Recent data bags;
Step S12, the Recent data is stored in many copy memory modules according to many copy storage modes, is gone through described History data are stored in correcting and eleting codes memory module according to correcting and eleting codes storage mode;
Step S13, when Recent data coating is labeled as completion status, then dumps to correcting and eleting codes by the Recent data bag Memory module is so as to history of forming data;
The tax data fault-tolerant processing flow comprises the following steps:
Step S21, according to many copy memory module data management nodes, judges that failure tax data storage is deposited in many copies In storage module or in correcting and eleting codes memory module;
Step S22, if the tax data of failure is stored in many copy memory modules, according to the note of many replica management nodes Record and send test packet to related many copy memory nodes, it is corresponding with failure tax data according to the selection of test packet feedback delay Copy, and copy is reverted into effective tax data;
Step S23, if the tax data of failure is stored in correcting and eleting codes memory module, need to further search for correcting and eleting codes pipe The record of node is managed, test packet is sent to related correcting and eleting codes memory node, then selected successively according to test packet feedback delay Corresponding encoded block is selected, after obtaining sufficient amount encoding block, you can reduction recovers tax data;
The tax data distributed memory system, for providing storage and fault tolerant service for tax data;
The data that the tax data is input into for the client of tax data distributed memory system;
The historical data is the data before tax data distributed memory system time division points, is stored in correcting and eleting codes Memory module;
The Recent data, is the data after tax data distributed memory system time division points, and storage is more secondary This memory module;
Many copy memory modules, for storing and processing Recent data, including copy memory module data more than Management node and copy memory node more than at least one;
Many replica management nodes, duplication, distribution and storage for managing data in many copy memory modules, and it is right Data message is recorded;
Many copy memory nodes, for storing Recent data;
The correcting and eleting codes memory module, for storing and processing historical data, including a correcting and eleting codes management node with extremely A few correcting and eleting codes memory node;
The correcting and eleting codes management node is for managing the coding of data in correcting and eleting codes memory module, distribution and storing and right Data message is recorded;
The correcting and eleting codes memory node, for store historical data;
Many copy storage modes, for reading, storing, record by tax data distribution formula storage system and extensive Multiple Recent data;
The correcting and eleting codes storage mode, for by tax data distribution formula storage system come unloading, reading, record and it is extensive Multiple historical data;
The encoding block is the encoding block formed after the Recent data of unloading is by subpackage and coding, and storage is deposited in correcting and eleting codes Storage node, tax data is reverted to for the reduction during tax data fault-tolerant processing.
Further, the correcting and eleting codes storage mode described in step S12 is comprised the following steps:
Step S1221, judges whether the outside visiting frequency to correcting and eleting codes memory module is less than by correcting and eleting codes management node Visiting frequency threshold value, so as to judge that whether current correcting and eleting codes memory module, in idle condition, is if it is activated all to entangle and deleted Code memory node;
Step S1222, makes the following judgment to the correcting and eleting codes memory node that each is activated:The correcting and eleting codes memory node Storage load whether exceed storage loading thresholds, and whether the offered load of the correcting and eleting codes memory node fully loaded more than network Threshold value, if be no more than, unloading data is treated to the request of many replica management nodes;
Step S1223, by after after unloading data encoding, distributing and be stored in correcting and eleting codes memory node, and will distribute information Record is in correcting and eleting codes management node;
Step S1224, after confirming data conversion storage success, by the tax data and its pair of unloading in many copy memory modules This whole is deleted;
It is described to treat that unloading data are some copy data that unloading data are applied in many replica management nodes records, should The selection principle of copy data need to meet load balancing, and the copy data is used to distributing and being stored in correcting and eleting codes storage section after encoding Point;
The distribution information is the record information that multiple encoding blocks are distributed to multiple correcting and eleting codes memory nodes, many for guiding Individual encoding block reduction reverts to tax data.
Further, in many copy storage modes described in step S12, the handling process for writing Recent data is included such as Lower step:
Step S1231, when client sends Recent data request write-in, many replica management nodes are responded;
Step S1232, the tax data to writing carries out duplication and forms copy, and the tax data and its copy that will be write It is dividedly stored in different many copy memory nodes;
Step S1233, the storage information of the tax data that will be write is recorded in many replica management nodes.
Further, in many copy storage modes described in step S12, the handling process for reading Recent data is included such as Lower step:
Step S1241, when client sends Recent data read requests, many replica management nodes respond and basis Record and send test packet to related many copy memory nodes and ask computational load;
Step S1242, the time delay fed back by test packet and the computational load of related many copy memory nodes are come comprehensive Select corresponding many copy memory nodes;
Step S1243, the tax data that the distribution according to many replica management nodes allows in corresponding many copy memory nodes It is sent directly in client;
The client is the client of distributed memory system, for writing and reading tax data.
Further, in step S1232, the tax data of write-in and its location mode of copy are by same tax data Different copies be physically separated, select different rack or computer room storage.
Further, the process that the encoding block is formed is comprised the following steps:
Step 61, treats that the Recent data of unloading is packetized into C data block;
Step 62, N number of encoding block is encoded into by C data block, and the number of the N is more than C;
Step 63, N number of encoding block is distributed to N number of different correcting and eleting codes memory module;
Step 64, information record is distributed in the correcting and eleting codes management node where encoding block by N number of encoding block.
The present invention carries out merotype storage using the tax data feature of different time, comprehensively improves whole tax data Security and data repairing performance.The characteristics of there is phasic Chang due to the visiting frequency of tax data, recent data Visiting frequency is highest, and the visiting frequency of historical data is then relatively low.Correcting and eleting codes are used in the low data of visiting frequency, Memory space utilization rate can be improved, many copies are used in visiting frequency data high, improve data repairing performance.
Secondly, be distributed in erasure code task on different nodes by the present invention, and takes into full account node during selection node Loading condition, computational load and network transport load are shared in multiple nodes, improve the overall coding efficiency of system.
Again, the present invention ensure that the data before erasure code completion using the pattern of correcting and eleting codes after first copy Security, compensate for the situation of loss of data in the coding being likely to encounter when fault-tolerant using correcting and eleting codes merely.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be to wanting needed for embodiment description The accompanying drawing for using is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, right For those of ordinary skill in the art, on the premise of not paying creative work, it can also be obtained according to these accompanying drawings His accompanying drawing.
Fig. 1 is a kind of workflow based on correcting and eleting codes with the mixing tax big data method for security protection of many copies of the present invention Cheng Tu;
Fig. 2 is the structural representation of many copy memory modules of the invention;
Fig. 3 is the structural representation of correcting and eleting codes memory module of the invention.
Specific embodiment
To enable the above objects, features and advantages of the present invention more obvious understandable, below in conjunction with accompanying drawing and specifically Embodiment technical scheme is described in detail.It is pointed out that described embodiment is only this hair Bright a part of embodiment, rather than whole embodiments, based on the embodiment in the present invention, those of ordinary skill in the art are not having There is the every other embodiment made and being obtained under the premise of creative work, belong to the scope of protection of the invention.
As shown in figure 1, a kind of mixing tax big data method for security protection based on correcting and eleting codes with many copies, when tax number According to the tax data of distributed memory system it is normal when, many copies and the correcting and eleting codes storage mode for starting tax data store stream Journey;
When the tax data of tax data distributed memory system fails, start tax data fault-tolerant processing flow;
Many copies comprise the following steps with correcting and eleting codes storage mode Stored Procedure:
Step S11, tax data is temporally divided into historical data and Recent data, and the Recent data includes multiple Different Recent data bags;
Step S12, the Recent data is stored in many copy memory modules according to many copy storage modes, is gone through described History data are stored in correcting and eleting codes memory module according to correcting and eleting codes storage mode;
Step S13, the Recent data bag when Recent data coating is labeled as completion status, then dumped to entangle and deleted Code memory module is so as to history of forming data;
The tax data fault-tolerant processing flow comprises the following steps:
Step S21, according to many copy memory module data management nodes, judges that failure tax data storage is deposited in many copies In storage module or in correcting and eleting codes memory module;
Step S22, if the tax data of failure is stored in many copy memory modules, according to the note of many replica management nodes Record and send test packet to related many copy memory nodes, it is corresponding with failure tax data according to the selection of test packet feedback delay Copy, and copy is reverted into effective tax data;
Step S23, if the tax data of failure is stored in correcting and eleting codes memory module, need to further search for correcting and eleting codes management The record of node, test packet is sent to related correcting and eleting codes memory node, is then selected successively according to test packet feedback delay Corresponding encoded block, after obtaining sufficient amount encoding block, you can reduction recovers tax data;
The tax data distributed memory system, for providing storage and fault tolerant service for tax data;
The data that the tax data is input into for the client of tax data distributed memory system;
The historical data is the data before tax data distributed memory system time division points, is stored in correcting and eleting codes Memory module;
The Recent data, is the data after tax data distributed memory system time division points, and storage is more secondary This memory module.
As shown in Fig. 2 many copy memory modules, for storing and processing Recent data, including copy is deposited more than one Storage module data management node and copy memory node more than at least one;
Many replica management nodes, duplication, distribution and storage for managing data in many copy memory modules, and it is right Data message is recorded;
Many copy memory nodes, for storing Recent data.
As shown in figure 3, the correcting and eleting codes memory module, for storing and processing historical data, including a correcting and eleting codes pipe Reason node and at least one correcting and eleting codes memory node;
The correcting and eleting codes management node is for managing the coding of data in correcting and eleting codes memory module, distribution and storing and right Data message is recorded;
The correcting and eleting codes memory node, for store historical data.
Many copy storage modes, for reading, storing, record by tax data distribution formula storage system and extensive Multiple Recent data;
The correcting and eleting codes storage mode, for by tax data distribution formula storage system come unloading, reading, record and it is extensive Multiple historical data;
The encoding block is the encoding block formed after the Recent data of unloading is by subpackage and coding, and storage is deposited in correcting and eleting codes Storage node, tax data is reverted to for the reduction during tax data fault-tolerant processing.
Correcting and eleting codes storage mode described in step S12 is comprised the following steps:
Step S1221, judges whether the outside visiting frequency to correcting and eleting codes memory module is less than by correcting and eleting codes management node Visiting frequency threshold value, so as to judge that whether current correcting and eleting codes memory module, in idle condition, is if it is activated all to entangle and deleted Code memory node;
Step S1222, makes the following judgment to the correcting and eleting codes memory node that each is activated:The correcting and eleting codes memory node Storage load whether exceed storage loading thresholds, and whether the offered load of the correcting and eleting codes memory node fully loaded more than network Threshold value, if be no more than, unloading data is treated to the request of many replica management nodes;
Step S1223, by after after unloading data encoding, distributing and be stored in correcting and eleting codes memory node, and will distribute information Record is in correcting and eleting codes management node;
Step S1224, after confirming data conversion storage success, by the tax data and its pair of unloading in many copy memory modules This whole is deleted;
It is described to treat that unloading data are some copy data that unloading data are applied in many replica management nodes records, should The selection principle of copy data need to meet load balancing, and the copy data is used to distributing and being stored in correcting and eleting codes storage section after encoding Point;
The distribution information is the record information that multiple encoding blocks are distributed to multiple correcting and eleting codes memory nodes, many for guiding Individual encoding block reduction reverts to tax data.
In many copy storage modes described in step S12, the handling process for writing Recent data comprises the following steps:
Step S1231, when client sends Recent data request write-in, many replica management nodes are responded;
Step S1232, the tax data to writing carries out duplication and forms copy, and the tax data and its copy that will be write It is dividedly stored in different many copy memory nodes;
Step S1233, the storage information of the tax data that will be write is recorded in many replica management nodes.
In many copy storage modes described in step S12, the handling process for reading Recent data comprises the following steps:
Step S1241, when client sends Recent data read requests, many replica management nodes respond and basis Record and send test packet to related many copy memory nodes and ask computational load;
Step S1242, the time delay fed back by test packet and the computational load of related many copy memory nodes are come comprehensive Select corresponding many copy memory nodes;
Step S1243, the tax data that the distribution according to many replica management nodes allows in corresponding many copy memory nodes It is sent directly in client;
The client is the client of distributed memory system, for writing and reading tax data.
In step S1232, the tax data of write-in and its location mode of copy are that the difference of same tax data is secondary Originally it is physically separated, selects different rack or computer room storages.
The process that the encoding block is formed is comprised the following steps:
Step 61, treats that the Recent data of unloading is packetized into C data block;
Step 62, N number of encoding block is encoded into by C data block, and the number of the N is more than C;
Step 63, N number of encoding block is distributed to N number of different correcting and eleting codes memory module;
Step 64, information record is distributed in the correcting and eleting codes management node where encoding block by N number of encoding block.
The present invention carries out merotype storage using the tax data feature of different time, comprehensively improves whole tax data Security and data repairing performance.The characteristics of there is phasic Chang due to the visiting frequency of tax data, recent data Visiting frequency is highest, and the visiting frequency of historical data is then relatively low.Correcting and eleting codes are used in the low data of visiting frequency, Memory space utilization rate can be improved, many copies are used in visiting frequency data high, improve data repairing performance.
Secondly, be distributed in erasure code task on different nodes by the present invention, and takes into full account node during selection node Loading condition, computational load and network transport load are shared in multiple nodes, improve the overall coding efficiency of system.
Again, the present invention ensure that the data before erasure code completion using the pattern of correcting and eleting codes after first copy Security, compensate for the situation of loss of data in the coding being likely to encounter when fault-tolerant using correcting and eleting codes merely.
Embodiment described above only expresses several embodiments of the invention, and its description is more specific and detailed, but simultaneously Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention Shield scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.

Claims (6)

1. a kind of mixing tax big data method for security protection based on correcting and eleting codes with many copies, it is characterised in that when tax number According to the tax data of distributed memory system it is normal when, many copies and the correcting and eleting codes storage mode for starting tax data store stream Journey;
When the tax data of tax data distributed memory system fails, start tax data fault-tolerant processing flow;
Many copies comprise the following steps with correcting and eleting codes storage mode Stored Procedure:
Step S11, tax data is temporally divided into historical data and Recent data, and the Recent data includes multiple different Recent data bag;
Step S12, the Recent data is stored in many copy memory modules according to many copy storage modes, by the history number Stored in correcting and eleting codes memory module according to according to correcting and eleting codes storage mode;
Step S13, when Recent data coating is labeled as completion status, then dumps to correcting and eleting codes storage by the Recent data bag Module is so as to history of forming data;
The tax data fault-tolerant processing flow comprises the following steps:
Step S21, according to many copy memory module data management nodes, judges that failure tax data storage stores mould in many copies In block or in correcting and eleting codes memory module;
Step S22, if the tax data storage of failure is in many copy memory modules, according to many replica management nodes record to Related many copy memory nodes send test packet, according to test packet feedback delay selection pair corresponding with failure tax data This, and copy is reverted into effective tax data;
Step S23, if the tax data of failure is stored in correcting and eleting codes memory module, need to further search for correcting and eleting codes management node Record, to related correcting and eleting codes memory node send test packet, then selected successively accordingly according to test packet feedback delay Encoding block, after obtaining sufficient amount encoding block, you can reduction recovers tax data.
2. a kind of mixing tax big data method for security protection based on correcting and eleting codes with many copies as claimed in claim 1, its It is characterised by, the correcting and eleting codes storage mode described in step S12 is comprised the following steps:
Whether step S1221, judge the outside visiting frequency to correcting and eleting codes memory module less than access by correcting and eleting codes management node Frequency threshold, so as to judge that whether current correcting and eleting codes memory module, in idle condition, if it is activates whole correcting and eleting codes and deposits Storage node;
Step S1222, makes the following judgment to the correcting and eleting codes memory node that each is activated:The correcting and eleting codes memory node is deposited Whether storage load exceedes storage loading thresholds, and whether the offered load of the correcting and eleting codes memory node is fully loaded with threshold more than network Value, if be no more than, unloading data is treated to the request of many replica management nodes;
Step S1223, by after after unloading data encoding, distributing and be stored in correcting and eleting codes memory node, and will distribute information record In correcting and eleting codes management node;
Step S1224 is complete by the tax data and its copy of unloading in many copy memory modules after confirming data conversion storage success Delete in portion.
3. a kind of mixing tax big data method for security protection based on correcting and eleting codes with many copies as claimed in claim 1, its It is characterised by, in many copy storage modes described in step S12, the handling process for writing Recent data comprises the following steps:
Step S1231, when client sends Recent data request write-in, many replica management nodes are responded;
Step S1232, the tax data to writing carries out duplication and forms copy, and the tax data and its copy of write-in are separated It is stored in different many copy memory nodes;
Step S1233, the storage information of the tax data that will be write is recorded in many replica management nodes.
4. a kind of mixing tax big data method for security protection based on correcting and eleting codes with many copies as claimed in claim 1, its It is characterised by, in many copy storage modes described in step S12, the handling process for reading Recent data comprises the following steps:
Step S1241, when client sends Recent data read requests, many replica management nodes are responded and according to record Test packet is sent to related many copy memory nodes and ask computational load;
Step S1242, the time delay and the computational load of related many copy memory nodes fed back by test packet are come comprehensive selection Corresponding many copy memory nodes;
Step S1243, the tax data that the distribution according to many replica management nodes allows in corresponding many copy memory nodes is direct It is sent in client.
5. a kind of mixing tax big data method for security protection based on correcting and eleting codes with many copies as claimed in claim 3, its It is characterised by, in step S1232, the tax data of write-in and its location mode of copy are that the difference of same tax data is secondary Originally it is physically separated, selects different rack or computer room storages.
6. a kind of mixing tax big data method for security protection based on correcting and eleting codes with many copies as claimed in claim 1, its It is characterised by, the process that the encoding block is formed is comprised the following steps:
Step 61, treats that the Recent data of unloading is packetized into C data block;
Step 62, N number of encoding block is encoded into by C data block, and the number of the N is more than C;
Step 63, N number of encoding block is distributed to N number of different correcting and eleting codes memory module;
Step 64, information record is distributed in the correcting and eleting codes management node where encoding block by N number of encoding block.
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