CN101902498B - Network technology based storage cloud backup method - Google Patents
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Abstract
The invention discloses a network technology based storage cloud backup method. The method comprises the following steps: establishing a private cloud for idle storage space on each computer node in an internal network of an enterprise; initiating a backup request to a target node by a backup initiating node; hierarchically storing data by the backup initiating node according to data importance grade, backing up superior data in a public cloud, and other data except the superior data in the private cloud. The method solves the technical problems that data backup and recovery efficiency are affected due to the fact that storage equipment purchased by the computer has over high price, and the bandwidth of the external network of the company is not sufficient, and achieves the aims of storage backup and remote disaster recover for company data by using minimum cloud storage space under a condition that medium-small enterprises have limited network bandwidth.
Description
Technical field
The present invention relates to a kind of computer data storage backup method, particularly a kind of storage cloud backup method of technology Network Based.
Background technology
Modern enterprise needs the amount of information of Storage and Processing more and more huger, the demand of information processing also becomes increasingly complex, answer the demand of the acquisition and processing of mass data, a lot of enterprises the network store system of oneself (such as NAS, SAN, IP SAN etc.), also some enterprise has bought various data backup systems (such as NetBackup, TSM, CommVault etc.).Yet, in all enterprises and unit, popularize data backup in an all-round way and still be faced with many challenges.Maximum challenge is exactly that " cost " of data backup is too high.The traditional data backup scenario all is that the soft hardware equipment by special use realizes in the network range of enterprise.Realize the back-up storage that data are quick and safe, enterprise usually will build fiber optic network, makes up SAN storage area network etc.And to realize the long-distance disaster function, then need the larger cost of flower to rent or transform fiber optic network, and make up data center as the strange land storage center.Except huge hardware costs, for different business datum protections, enterprise also need buy different software (or software module) and realize data catastrophic failure-tolerant backup.Large enterprise will set up the complete long-distance disaster data backup system of a cover, often needs the investment of up to ten million units.And medium-sized and small enterprises will purchase the small-sized data backup system of a cover, and are also moving then expensive up to a million.
In recent years, have and safeguard the expensive too high predicament of software and hardware of costliness for solving enterprise, the cloud computing of Internet-based service is arisen at the historic moment.As the Internet era new product, cloud computing is compared with traditional data center services, has the advantages such as low cost, high operational capability, service be convenient.The cloud storage is in the conceptive extension of cloud computing and a development new concept out, refer to by modes such as cluster application, grid and distributed storage, a large amount of various dissimilar memory devices in the Internet are gathered collaborative work by application software, an architecture of data storage and business service is provided jointly.Cloud backup then is the special branch that the cloud storage is used, and is the cloud computing take data backup and disaster recovery as purpose.
Present many manufacturers begin to utilize the mode of cloud storage for the user provides relatively inexpensive on-line storage backup services, mainly comprise: Mozy online backup, Norton Online Backup, www.qq.com's dish, in standby China letter and the backup of E cloud etc.Yet, since medium-sized and small enterprises and the Internet be connected limited bandwidth (overwhelming majority use ADSL), these online backup services based on publicly-owned cloud storage not only can't be satisfied the efficient backup of user's mass data and the demand of recovery, and because backup traffic to the competition of the network bandwidth, usually affects company's regular traffic.
For overcoming defective and the deficiency of " publicly-owned cloud " service, external large enterprise has begun to provide high-quality " cloud " service for this enterprise by the mode of setting up enterprises " privately owned cloud ".Yet, most medium-sized and small enterprises can't bear the expensive expense that makes up enterprises " privately owned cloud " by buying new information technoloy equipment at all, the cloud backup services of high-efficiency and economic will be provided for medium-sized and small enterprises, and we must deeply excavate enterprise's existing resource, carry out technological innovation.
Summary of the invention
The object of the invention is to overcome the shortcoming of prior art with not enough, a kind of storage cloud backup method of technology Network Based is provided, has solved enterprise and purchased memory device cost prohibitive, the not enough technical problem that affects data backup and resume efficient of the external network bandwidth of enterprise; Make medium-sized and small enterprises in the situation of the limited network bandwidth, reach the purpose of storage backup and the long-distance disaster of business data with minimum cloud memory space.
Purpose of the present invention is achieved through the following technical solutions: a kind of storage cloud backup method of technology Network Based, may further comprise the steps: the storage cloud backup method of this technology Network Based may further comprise the steps: S1, the idle memory space on each computer node in the Intranet is made up privately owned cloud; S2, backup are initiated node and are initiated backup request to destination node; S3, backup are initiated node according to the data importance grade, to data classification storage, with the highest ranking data backup at publicly-owned cloud, with other data backups outside the highest ranking data at privately owned cloud.
The described remaining space that will leave unused makes up privately owned cloud, the step that node is initiated backup request is initiated in backup, specifically comprises the steps:
S11: any node for newly-increased in the network, distribute a node ID value as the identifier of this node;
S12: when node initiation backup request is initiated in backup, calculate the total amount size that needs backup file;
S13: seek n nearest enabled node as destination node, and obtain the actual free memory of this n enabled node, actual free memory=idle remaining space-threshold values;
S14: according to the actual free memory of each enabled node, backup file is divided into n data block not of uniform size, parallel transmission is to corresponding n enabled node.
Preferably, also carry out following steps behind the described step S14:
S15: local node is during backup, and whether monitoring local node remaining space changes; If the current residual space has arrived threshold values in advance, the node stop the transmission of data is initiated in the notice backup, and other enabled nodes around the search local node, and then node is initiated in the notice backup;
S16: backup is initiated node with Backup Data, sends to new destination node;
S17: all destination nodes begin receiving Backup Data, synchronously according to the P2P protocol algorithm, seek a replica node, and will store data and copy synchronously a part copy in this a replica node.
The step of described data staging storage is specific as follows:
S21: the highest ranking data are directly transferred to publicly-owned cloud;
S22: other data outside the highest ranking data are stored in privately owned cloud;
S23: on the basis of step 22, with other data outside the highest ranking data and outside the lowest class data, storage is a at privately owned cloud again.
Described step S22-S23 is specific as follows:
S31: when initiating backup, the current network state of monitoring nodes is initiated in backup;
S32: according to the setting of user to data importance, the grade of inquiring about current Backup Data for the highest ranking data, backups in the publicly-owned cloud layer; For the data of the lowest class, directly be stored in the privately owned cloud;
S33: with data backup to each enabled node; Each enabled node Real Time Monitoring current network state, again according to the grade of this node Backup Data, asynchronous backing up data in the publicly-owned cloud layer.
The present invention has following advantage and effect with respect to prior art:
1, by utilizing the enterprises idle space to make up privately owned storage cloud (being called for short privately owned cloud) and publicly-owned storage cloud (being called for short publicly-owned cloud), and both are organically combined, saved the memory space of enterprise, solved the limited problem of business data memory space, avoided or reduced the expense that enterprise purchases special purpose memory devices; In addition, the utilization of idle memory space, the surplus of Internet Transmission and the performance issue in the storing process have also effectively been solved
2, the mode of processing by data being carried out classification is stored in privately owned cloud layer with non-critical data, and critical data is stored in publicly-owned cloud layer, then privately owned cloud layer and publicly-owned cloud layer is combined, as unified data storage layer; Thereby avoided data backup to too the occupying of the external network bandwidth, arrived the quick storage backup of data, greatly saved the demand of enterprise to the external network bandwidth.
3, for avoiding Backup Data flow effect enterprise proper network to use, the data that needs backuped to outside publicly-owned cloud at first are buffered in the inner privately owned cloud, and the network free time, automatically data are transferred in the publicly-owned cloud, realize asynchronous long-distance disaster.Take full advantage of the idle memory space of enterprise, can reach the effect of energy-saving and emission-reduction, environmental protection.
Description of drawings
Fig. 1 is overview flow chart of the present invention;
Fig. 2 be with the idle memory space of enterprises make up privately owned cloud, schematic diagram;
Fig. 3 is the network architecture schematic diagram of the privately owned cloud of the present invention and publicly-owned cloud combination;
Fig. 4 is the flow chart with the classification Backup Data.
Embodiment
The present invention is described in further detail below in conjunction with embodiment and accompanying drawing, but embodiments of the present invention are not limited to this.
Embodiment
The present invention is based on the storage cloud backup method of network technology, its overall procedure may further comprise the steps as shown in Figure 1:
S1, the idle remaining space on each computer node in the Intranet is built into privately owned cloud;
S2, backup are initiated node and are initiated backup request to destination node;
S3, backup are initiated node according to the data importance grade, to data classification storage, with the highest ranking data backup at publicly-owned cloud, with other data backups outside the highest ranking data at privately owned cloud.
Wherein step 1 is to utilize the correlation techniques such as P2P, and the idle remaining space on each computer node in the Intranet is consisted of privately owned cloud.All there is very large idle remaining space in the computer of most enterprises, and a lot of computers nearly have that 50% memory space is in idle state.Calculate by 100 computers of a medium-sized enterprise (can comprise tabletop machine and server), average every machine has the idle memory space of 50GB, and so whole enterprise just has the memory space of 5TB not use.The present invention in force, to a client be installed at each computer of enterprises, it is node, the upper limit threshold values of the idle remaining space of each this machine of node initial default is 20%, namely when the idle remaining space of the machine be lower than total memory space 20% the time, this section is named a person for a particular job can not be used as the memory node of backup.The user also can according to the concrete condition of the machine, regulate this threshold values.
Utilizing the remaining space that leaves unused in the in-house network to make up privately owned cloud layer, is characteristics of the present invention.Because inner idle remaining space is to be dispersed on the inner individual device (to comprise desktop computer, server and special purpose memory devices, such as NAS, disk array etc.), therefore, how the resource of disperseing being taken full advantage of, is an implementation focus of the present invention.At this, the present invention at first uses the P2P technology to realize the structure of privately owned cloud.The P2P storage system also is Peer-to-peer storage system, refers to the storage networking that memory node forms in a kind of mode of functional equivalence.This structure is different from the focus control mode of traditional client/server, it can be to be comprised of with Peer server node fully, can be again to be comprised of user's tabletop machine fully, also can be the storage system that server and tabletop machine form in the mode of equity jointly.Because adopt the interconnected technology of equity, the P2P storage system is compared traditional storage system and had the following advantages: do not rely on center-control, system has high scalability naturally, and does not have single-point performance bottleneck problem; Each nodal function equity so that whole system still can work, also namely has high fault tolerance behind the disappearance arbitrfary point.High scalability and high fault tolerance and then become possibility so that utilize a cheap group of planes to build extensive high-performance stores service; Owing to also cannot not carry out center-control, the P2P storage system can greatly reduce storage system total have an expense (TCO, Totoal Cost of Ownership); By the P2P storage system that tabletop machine forms, each node will be possible to use the border bandwidth resources storage data of the Internet, greatly improves transmission speed.
As shown in Figure 2, the present invention will be left unused, and remaining space makes up privately owned cloud, backup is initiated node and initiated backup request, specifically comprises the steps:
S11: for any newly-increased in network node, according to the P2P protocol algorithm, in the node ID value of a 64bit of the Key of the 160bit allocation of space identifier as this node.＜Key, Value〉right data just leave on ID value and the immediate node of Key value.
S12: when node initiation backup request is initiated in backup, calculate the total amount size that needs backup file.
S13: according to the P2P protocol algorithm, seek n nearest enabled node as destination node, and obtain the actual free memory of this n enabled node, actual free memory=idle remaining space-threshold values.Each node is the state of the local remaining space of monitoring in time, and the user also can be according to concrete needs manual adjustments threshold values.
S14: according to the actual free memory of each enabled node, backup file is divided into n data block not of uniform size, parallel transmission is to corresponding n enabled node.
S15: because each node may be in active state, the state of its remaining space is in the process of change; Therefore, local node can be during backup, and whether monitoring local node remaining space changes, and monitored results is in time fed back to backup initiation node.If the current residual space has arrived threshold values in advance, can notify backup to initiate the node stop the transmission of data, and other enabled nodes around the search local node, and node is initiated in the notice backup.
S16: backup is initiated node with Backup Data, sends to new destination node.
S17: all destination nodes begin receiving Backup Data, synchronously according to the P2P protocol algorithm, seek a replica node.And will store data and copy synchronously a part copy in this a replica node.
Step S15-S17 has further strengthened the reliability of transfer of data of the present invention and backup.
Produce a node file in each replica node, the information that is used for record and preserves its adjacent node; Then, will transmit log information reports to backup initiation node; To all transmit log recording by backup initiation node and copy separately a the report in publicly-owned cloud service central database.So far, built privately owned cloud layer at internal node.Thereby utilize idle remaining space, the input of saving memory device.
Build after the privately owned cloud, the present invention combines privately owned cloud and publicly-owned cloud two-level memory, structure is based on the cloud backup services system of enterprise of SaaS and P2P model, its network topology structure as shown in Figure 3, comprise publicly-owned cloud and some privately owned clouds, wherein publicly-owned cloud comprises Web server group, storage server group, the some storage networkings that connects successively, and each privately owned cloud all is connected with the Web server group.Client node need to store the data in the publicly-owned cloud into, key according to data, can initiate node by backup and directly be transferred to publicly-owned cloud, also can be by the asynchronous multicast communication of other nodes (perhaps a plurality of nodes) of privately owned cloud inside to publicly-owned cloud storage center.And publicly-owned cloud storage center can be arranged a plurality of Web server groups and a plurality of storage server group in zones of different, according to the scheduling of Dynamic Load-balancing Algorithm, backs up data on the only memory device.As shown in Figure 1, data staging storage of the present invention specifically comprises the steps:
S21: highest ranking data (being most critical data) are directly transferred to publicly-owned cloud;
S22: other data outside the highest ranking data are stored in privately owned cloud;
S23: on the basis of step 22, with other data outside the highest ranking data and outside the lowest class data, storage is a at privately owned cloud again.
The present invention also utilizes the mode of asynchronous multi-level backup to guarantee that Backup Data stream does not affect enterprise the work needed network bandwidth and other system resource, specific as follows: at first, quantity according to available connected node in the privately owned cloud in inside, backup data set is divided into a plurality of data blocks, be transferred in a plurality of nodes of privately owned cloud layer, and according to the grade separation of data and the busy situation of resource of node separately, with the response data asynchronous transmission in publicly-owned cloud.Utilize the mode of asynchronous multi-level backup, not only can reduce non-key Backup Data to the taking of the network bandwidth, and can avoid critical data when network is busy, to upload impact on enterprise's regular traffic.By on each computer node of network internal (client) finger daemon being installed, this process is surveyed the current network situation at running background.When data are submitted backup to, according to the available situation of current network resources, and the importance of data, whether determination data in time uploads to publicly-owned cloud storage center, for the data of highest ranking, data will in time be uploaded, and inquire about simultaneously neighbor node available in the privately owned cloud as copy.For other data, according to its important property wanted and Internet Use, first do buffer memory at the internal node of privately owned cloud layer, then in the situation that Internet resources can be used, asynchronous uploading data again.The data that backup to publicly-owned cloud at first are buffered in the flow process (being step S22-S23) of inner privately owned cloud, specific as follows:
S31: when initiating backup, the current network state of monitoring nodes is initiated in backup;
S32: according to the setting of user to data importance, the grade of inquiring about current Backup Data for the highest ranking data, preferentially backups in the publicly-owned cloud layer; For the data of the lowest class, directly be stored in the privately owned cloud;
S33: in conjunction with the process that makes up privately owned cloud, with extremely inner each enabled node of data backup; Each enabled node Real Time Monitoring current network state, again according to the grade of this node Backup Data, asynchronous backing up data in the publicly-owned cloud layer.
Above-described embodiment is the better execution mode of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present invention and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (4)
1. the storage cloud backup method of a technology Network Based is characterized in that may further comprise the steps:
S1, the idle memory space on each computer node in the Intranet is made up privately owned cloud;
S2, backup are initiated node and are initiated backup request to destination node;
S3, backup are initiated node according to the data importance grade, to data classification storage, with the highest ranking data backup at publicly-owned cloud, with other data backups outside the highest ranking data at privately owned cloud;
The described memory space that will leave unused makes up privately owned cloud, the step that node is initiated backup request is initiated in backup, specifically comprises the steps:
S11: any node for newly-increased in the network, distribute a node ID value as the identifier of this node;
S12: when node initiation backup request is initiated in backup, calculate the total amount size that needs backup file;
S13: seek n nearest enabled node as destination node, and obtain the actual free memory of this n enabled node, actual free memory=idle remaining space-threshold values;
S14: according to the actual free memory of each enabled node, backup file is divided into n data block not of uniform size, parallel transmission is to corresponding n enabled node.
2. the storage cloud backup method of technology Network Based according to claim 1 is characterized in that, also carries out following steps behind the described step S14:
S15: local node is during backup, and whether monitoring local node remaining space changes; If the current residual space has arrived threshold values in advance, the node stop the transmission of data is initiated in the notice backup, and other enabled nodes around the search local node, and then node is initiated in the notice backup;
S16: backup is initiated node with Backup Data, sends to new destination node;
S17: all destination nodes begin receiving Backup Data, synchronously according to the P2P protocol algorithm, seek a replica node, and will store data and copy synchronously a part copy in this a replica node.
3. the storage cloud backup method of technology Network Based according to claim 1 is characterized in that, the step of described data staging storage is specific as follows:
S21: the highest ranking data are directly transferred to publicly-owned cloud;
S22: other data outside the highest ranking data are stored in privately owned cloud;
S23: on the basis of step 22, with other data outside the highest ranking data and outside the lowest class data, storage is a at privately owned cloud again.
4. the storage cloud backup method of technology Network Based according to claim 3 is characterized in that, described step S22-S23 is specific as follows:
S31: when initiating backup, the current network state of monitoring nodes is initiated in backup;
S32: according to the setting of user to data importance, the grade of inquiring about current Backup Data for the highest ranking data, backups in the publicly-owned cloud layer; For the data of the lowest class, directly be stored in the privately owned cloud;
S33: with data backup to each enabled node; Each enabled node Real Time Monitoring current network state, again according to the grade of this node Backup Data, asynchronous backing up data in the publicly-owned cloud layer.
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