CN105404564A - Data remote disaster tolerance method and apparatus - Google Patents
Data remote disaster tolerance method and apparatus Download PDFInfo
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- CN105404564A CN105404564A CN201510945282.7A CN201510945282A CN105404564A CN 105404564 A CN105404564 A CN 105404564A CN 201510945282 A CN201510945282 A CN 201510945282A CN 105404564 A CN105404564 A CN 105404564A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1446—Point-in-time backing up or restoration of persistent data
- G06F11/1458—Management of the backup or restore process
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Abstract
The invention discloses a data remote disaster tolerance method and apparatus. The method comprises: when a source volume in a main site and a target volume in a backup site establish an asynchronous copy relationship, generating a first additional volume in the main site and generating a second additional volume in the backup site; synchronously recording data change information of the source volume by the first additional volume; after a preset window period is ended, transmitting the recorded data change information to the target volume of the backup site by the first additional volume; and synchronously recording the data change information by a second additional volume to finish the asynchronous copy of the main and backup sites. According to the data remote disaster tolerance method and apparatus provided by the invention, the additional volumes are introduced and the window period of a proper size is set, so that the data volume of asynchronous data transmission can be effectively reduced, the congestion degree of a transmission network can be reduced, and the efficiency and stability of a remote disaster backup technology are improved.
Description
Technical field
The present invention relates to storage array disaster tolerance technology field, particularly relate to a kind of remote data disaster recovery method and device.
Background technology
Data security has become the operation core of enterprises and institutions at present, the memory device that a lot of storage plant commercial city can provide stability high to user, but must consider that various natural disaster causes the factor of breaking-up to production system.In order to ensure the continuation of data access, restorability and high availability, remote disaster tolerance solution is arisen at the historic moment, and remote copy technology is then the core technology in Disaster Tolerant Scheme.
Remote copy (RemoteCopy), also known as Remote Switched Port Analyzer, is the one of data mirroring techniques, is divided into synchronous remote copy and asynchronous remote copy.It can at several data trnascriptions of two or more station maintenance.Because multiple website is distant, be often distributed in different cities, loss of data when can effectively avert catastrophe.
When website distance reaches certain distance, because propagation delay time inevitably increases, the time delay of two station data read-writes increases.In order to not affect the readwrite performance of the manufacturing side, allow manufacturing side home site first to complete data write operation, return write to upper layer application and complete response, the delayed write of remote disaster tolerance website, Here it is asynchronous remote copy, namely the data write of two websites is asynchronous.
Asynchronous remote copy is generally applied in remote across in the Disaster Tolerant Scheme of metropolitan area, website distance can reach several hundred kilometers, due to the growth of data transmission distance, the factor affecting Disaster Tolerant Scheme mainly contains: determine that the desired value whether concrete bandwidth sum time delay between website reaches design becomes complicated; Main frame between the website of two ends may be out of touch; Intermittent data transmission peak may cause network interruption.Therefore, the efficiency and the stability that how to improve asynchronous remote copy technology in remote Disaster Tolerant Scheme are technical matterss urgently to be resolved hurrily at present.
Summary of the invention
The object of this invention is to provide a kind of remote data disaster recovery method and device, object is to solve the low problem of asynchronous remote copy technical efficiency and stability in existing Disaster Tolerant Scheme.
For solving the problems of the technologies described above, the invention provides a kind of remote data disaster recovery method, comprising:
When the source book of home site and the target volume of backup site set up asynchronous replication relation, in described home site, generate the first Addon Volume, in described backup site, generate the second Addon Volume;
The data variation information of source book described in described first Addon Volume synchronous recording;
After the preset window phase terminates, the described data variation information transmission of record is given the target volume of described backup site by described first Addon Volume;
Data variation information described in described second annex volume synchronous recording, to complete the asynchronous replication of active and standby website.
Alternatively, the scope of described preset window phase is 60 seconds to 24 hours.
Alternatively, the described data variation information transmission of record comprises to the target volume of described backup site by described first Addon Volume:
The described data variation information transmission of record is given the target volume of described backup site by described first Addon Volume by the network path between active and standby website.
Alternatively, also comprise:
After the data of described home site are damaged, the data backed up by described backup site carry out date restoring.
Present invention also offers a kind of remote data disaster tolerance device, comprising:
Generation module, for when the source book of home site and the target volume of backup site set up asynchronous replication relation, generates the first Addon Volume, generates the second Addon Volume in described backup site in described home site;
First logging modle, for the data variation information of source book described in described first Addon Volume synchronous recording;
Transport module, for after the preset window phase terminates, the described data variation information transmission of record is given the target volume of described backup site by described first Addon Volume;
Second logging modle, for data variation information described in described second annex volume synchronous recording, to complete the asynchronous replication of active and standby website.
Alternatively, the scope of described preset window phase is 60 seconds to 24 hours.
Alternatively, described transport module specifically for:
The described data variation information transmission of record is given the target volume of described backup site by described first Addon Volume by the network path between active and standby website.
Alternatively, also comprise:
Recover module, for after the data of described home site are damaged, the data backed up by described backup site carry out date restoring.
Remote data disaster recovery method provided by the present invention and device, when the source book of home site and the target volume of backup site set up asynchronous replication relation, generate the first Addon Volume, generate the second Addon Volume in backup site in home site; The data variation information of the first Addon Volume synchronous recording source book; After the preset window phase terminates, the first Addon Volume by record data variation information transmission to the target volume of backup site; Second annex volume synchronous recording data variation information, to complete the asynchronous replication of active and standby website.Remote data disaster recovery method provided by the present invention and device, by introducing Addon Volume and arranging the window phase of suitable size, effectively can reduce the data volume of asynchronous data transfer, reduce the degree of Congestion of transmission network, thus improve long-range calamity for the efficiency of technology and stability.
Accompanying drawing explanation
In order to the technical scheme of the clearer explanation embodiment of the present invention or prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the process flow diagram of a kind of embodiment of remote data disaster recovery method provided by the present invention;
Fig. 2 is the process flow diagram of the another kind of embodiment of remote data disaster recovery method provided by the present invention;
The structured flowchart of the remote data disaster tolerance device that Fig. 3 provides for the embodiment of the present invention.
Embodiment
The architecture of appearance to Disaster Tolerant Scheme of asynchronous remote copy technology proposes a lot of requirement.Lower at some link bandwidths, network path is more crowded, when load on host computers is heavier, there will be the error message of a lot of crowded obstruction, all may occur similar information in home site, backup site and network.Core of the present invention is to provide a kind of remote data disaster recovery method and device.
In order to make those skilled in the art person understand the present invention program better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.Obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, the method comprises the process flow diagram of a kind of embodiment of remote data disaster recovery method provided by the present invention:
Step S101: when the source book of home site and the target volume of backup site set up asynchronous replication relation, generate the first Addon Volume in described home site, generate the second Addon Volume in described backup site;
Step S102: the data variation information of source book described in described first Addon Volume synchronous recording;
Step S103: after the preset window phase terminates, the described data variation information transmission of record is given the target volume of described backup site by described first Addon Volume;
Step S104: data variation information described in described second annex volume synchronous recording, to complete the asynchronous replication of active and standby website.
Remote data disaster recovery method provided by the present invention, when the source book of home site and the target volume of backup site set up asynchronous replication relation, generates the first Addon Volume, generates the second Addon Volume in backup site in home site; The data variation information of the first Addon Volume synchronous recording source book; After the preset window phase terminates, the first Addon Volume by record data variation information transmission to the target volume of backup site; Second annex volume synchronous recording data variation information, to complete the asynchronous replication of active and standby website.Remote data disaster recovery method provided by the present invention, by introducing Addon Volume and arranging the window phase of suitable size, effectively can reduce the data volume of asynchronous data transfer, reduce the degree of Congestion of transmission network, thus improve long-range calamity for the efficiency of technology and stability.
Particularly, the source book of home site and the target volume of backup site set up asynchronous replication relation, and relation can generate the first Addon Volume A while setting up in home site, generate generation second Addon Volume B in backup site.Because memory device self all can have the technology of local synchronization, source book and the first Addon Volume A and target volume and the second Addon Volume B are the relations of local synchronization, and Addon Volume A can record the data situation of source book.
As a kind of embodiment, the scope of the preset window phase in remote data disaster recovery method provided by the present invention can be 60 seconds to 24 hours.The time size of window phase can adjust, and this does not all affect realization of the present invention.
The process flow diagram of the another kind of embodiment of remote data disaster recovery method provided by the present invention as shown in Figure 2, compared with a upper embodiment, the described data variation information transmission of record can be specially to the target volume of described backup site by the first Addon Volume: the described data variation information transmission of record is given the target volume of described backup site by described first Addon Volume by the network path between active and standby website.The method specifically comprises:
Step S201: when the source book of home site and the target volume of backup site set up asynchronous replication relation, generate the first Addon Volume in described home site, generate the second Addon Volume in described backup site;
Step S202: the data variation information of source book described in described first Addon Volume synchronous recording;
Step S203: after the preset window phase terminates, the described data variation information transmission of record is given the target volume of described backup site by the first Addon Volume by the network path between active and standby website;
Step S204: data variation information described in described second annex volume synchronous recording, to complete the asynchronous replication of active and standby website.
After a window phase terminates, the data situation that first Addon Volume A starts to be recorded is transferred to the target volume of backup site by the network path of active and standby website, meanwhile, the second Addon Volume B also can record the data of these changes, finally completes the asynchronous replication of active and standby website.
Preferably, remote data disaster recovery method provided by the present invention can further include:
After the data of described home site are damaged, the data backed up by described backup site carry out date restoring.
Traditional asynchronous remote copy technology, home site, after have received I/O operation, needs the operation of same quantity to be transferred to backup site, and these operations be all much to same data area repeat upgrade.And the application is by the setting of window phase, in a window phase, to the multi-pass operations of same data area, only need record last operation, then be transferred to backup site, greatly reduced the data volume being transferred to remote site like this, improve the efficiency of this technology.
Be introduced the remote data disaster tolerance device that the embodiment of the present invention provides below, remote data disaster tolerance device described below can mutual corresponding reference with above-described remote data disaster recovery method.
The structured flowchart of the remote data disaster tolerance device that Fig. 3 provides for the embodiment of the present invention, can comprise with reference to Fig. 3 remote data disaster tolerance device:
Generation module 100, for when the source book of home site and the target volume of backup site set up asynchronous replication relation, generates the first Addon Volume, generates the second Addon Volume in described backup site in described home site;
First logging modle 200, for the data variation information of source book described in described first Addon Volume synchronous recording;
Transport module 300, for after the preset window phase terminates, the described data variation information transmission of record is given the target volume of described backup site by described first Addon Volume;
Second logging modle 400, for data variation information described in described second annex volume synchronous recording, to complete the asynchronous replication of active and standby website.
As a kind of embodiment, in the application, the scope of above-mentioned preset window phase can be specially 60 seconds to 24 hours.
As a kind of embodiment, the transport module 300 of remote data disaster tolerance device provided by the present invention can be specifically for:
The described data variation information transmission of record is given the target volume of described backup site by described first Addon Volume by the network path between active and standby website.
As a kind of embodiment, remote data disaster tolerance device provided by the present invention can further include:
Recover module, for after the data of described home site are damaged, the data backed up by described backup site carry out date restoring.
Remote data disaster tolerance device provided by the present invention, when the source book of home site and the target volume of backup site set up asynchronous replication relation, generates the first Addon Volume, generates the second Addon Volume in backup site in home site; The data variation information of the first Addon Volume synchronous recording source book; After the preset window phase terminates, the first Addon Volume by record data variation information transmission to the target volume of backup site; Second annex volume synchronous recording data variation information, to complete the asynchronous replication of active and standby website.Remote data disaster tolerance device provided by the present invention, by introducing Addon Volume and arranging the window phase of suitable size, effectively can reduce the data volume of asynchronous data transfer, reduce the degree of Congestion of transmission network, thus improve long-range calamity for the efficiency of technology and stability.
To sum up, remote data disaster recovery method provided by the present invention and device, mainly for when the hardware such as hard disk, internal memory, CPU are certain, improve efficiency and the stability of remote data disaster tolerance by the implementation of Optimization Software and solution, the needs of plurality of application scenes can be met.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiment, between each embodiment same or similar part mutually see.For device disclosed in embodiment, because it corresponds to the method disclosed in Example, so description is fairly simple, relevant part illustrates see method part.
Professional can also recognize further, in conjunction with unit and the algorithm steps of each example of embodiment disclosed herein description, can realize with electronic hardware, computer software or the combination of the two, in order to the interchangeability of hardware and software is clearly described, generally describe composition and the step of each example in the above description according to function.These functions perform with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can use distinct methods to realize described function to each specifically should being used for, but this realization should not thought and exceeds scope of the present invention.
The software module that the method described in conjunction with embodiment disclosed herein or the step of algorithm can directly use hardware, processor to perform, or the combination of the two is implemented.Software module can be placed in the storage medium of other form any known in random access memory (RAM), internal memory, ROM (read-only memory) (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field.
Above remote data disaster recovery method provided by the present invention and device are described in detail.Apply specific case herein to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Claims (8)
1. a remote data disaster recovery method, is characterized in that, comprising:
When the source book of home site and the target volume of backup site set up asynchronous replication relation, in described home site, generate the first Addon Volume, in described backup site, generate the second Addon Volume;
The data variation information of source book described in described first Addon Volume synchronous recording;
After the preset window phase terminates, the described data variation information transmission of record is given the target volume of described backup site by described first Addon Volume;
Data variation information described in described second annex volume synchronous recording, to complete the asynchronous replication of active and standby website.
2. remote data disaster recovery method as claimed in claim 1, it is characterized in that, the scope of described preset window phase is 60 seconds to 24 hours.
3. remote data disaster recovery method as claimed in claim 2, is characterized in that, the described data variation information transmission of record comprises to the target volume of described backup site by described first Addon Volume:
The described data variation information transmission of record is given the target volume of described backup site by described first Addon Volume by the network path between active and standby website.
4. the remote data disaster recovery method as described in any one of claims 1 to 3, is characterized in that, also comprise:
After the data of described home site are damaged, the data backed up by described backup site carry out date restoring.
5. a remote data disaster tolerance device, is characterized in that, comprising:
Generation module, for when the source book of home site and the target volume of backup site set up asynchronous replication relation, generates the first Addon Volume, generates the second Addon Volume in described backup site in described home site;
First logging modle, for the data variation information of source book described in described first Addon Volume synchronous recording;
Transport module, for after the preset window phase terminates, the described data variation information transmission of record is given the target volume of described backup site by described first Addon Volume;
Second logging modle, for data variation information described in described second annex volume synchronous recording, to complete the asynchronous replication of active and standby website.
6. remote data disaster tolerance device as claimed in claim 5, it is characterized in that, the scope of described preset window phase is 60 seconds to 24 hours.
7. remote data disaster tolerance device as claimed in claim 6, is characterized in that, described transport module specifically for:
The described data variation information transmission of record is given the target volume of described backup site by described first Addon Volume by the network path between active and standby website.
8. the remote data disaster tolerance device as described in any one of claim 5 to 7, is characterized in that, also comprise:
Recover module, for after the data of described home site are damaged, the data backed up by described backup site carry out date restoring.
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| CN106598789A (en) * | 2016-11-30 | 2017-04-26 | 成都华为技术有限公司 | Container service disaster recovery method and device, production site and disaster recovery backup site |
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| CN108228390A (en) * | 2018-01-19 | 2018-06-29 | 腾讯科技（深圳）有限公司 | Data return shelves method and device |
| CN109117310A (en) * | 2018-08-08 | 2019-01-01 | 中国建设银行股份有限公司 | Realize disaster tolerance system, the method and device of data backup |
| CN109376035A (en) * | 2018-10-24 | 2019-02-22 | 郑州云海信息技术有限公司 | A kind of backup features test method, device, equipment and storage medium |
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| WO2018076633A1 (en) * | 2016-10-28 | 2018-05-03 | 华为技术有限公司 | Remote data replication method, storage device and storage system |
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| CN111030945A (en) * | 2019-12-06 | 2020-04-17 | 深信服科技股份有限公司 | Disaster recovery method, disaster recovery gateway, storage medium, device and system |
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