CN103843309A - Data synchronizing method and data synchronizing system - Google Patents
Data synchronizing method and data synchronizing system Download PDFInfo
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- CN103843309A CN103843309A CN201380002761.4A CN201380002761A CN103843309A CN 103843309 A CN103843309 A CN 103843309A CN 201380002761 A CN201380002761 A CN 201380002761A CN 103843309 A CN103843309 A CN 103843309A
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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
- G06F11/16—Error detection or correction of the data by redundancy in hardware
- G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
- G06F11/2053—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant
- G06F11/2056—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant by mirroring
- G06F11/2082—Data synchronisation
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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
- G06F11/16—Error detection or correction of the data by redundancy in hardware
- G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
- G06F11/2053—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant
- G06F11/2056—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant by mirroring
- G06F11/2071—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant by mirroring using a plurality of controllers
- G06F11/2074—Asynchronous techniques
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2201/00—Indexing scheme relating to error detection, to error correction, and to monitoring
- G06F2201/84—Using snapshots, i.e. a logical point-in-time copy of the data
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Abstract
The present invention provides a data synchronizing method and a data synchronizing system. The data synchronizing method comprises that: a first storage device generates snapshots of data stored in a target logical unit number (LUN); the first storage device writes the date in the snapshots to a mobile storage medium; a second storage device reads and stores data in the mobile storage medium, wherein, the second storage device is located on the far-end of the first storage device, and the second storage device is a disaster recovery storage of the first storage device. The data synchronizing method and a data synchronizing system of embodiments can realize a data synchronization of the first storage device and the second storage device, and can shorten data transmission times compared with the present network transmission mode. Compared with the present removing mode of the storage device, the data synchronizing method is convenient in operation, and can reduce a risk of data loss or data damage.
Description
Technical field
The embodiment of the present invention relates to areas of information technology, and more specifically, relates to method of data synchronization and data synchronous system.
Background technology
For fear of because the factors such as disaster cause loss of data, the construction of disaster tolerance system is particularly important.In the construction of disaster tolerance system, most critical be to long-range disaster-tolerant backup data center by the transfer of data of the existing production center.The method of this remote data transmission adopts the copy mode based on storage conventionally.Should the Data Replication Technology in Mobile based on storage realize the remote copy of data by the data Replica software in storage system with synchronously, be that storage system is also carried out local storage update data Replica in the storage system of the standby end of calamity, guarantee the consistency of data.In this manner, data Replica running software is in storage system, therefore being easier to realize the real-time replication capacity of the manufacturing side and the standby end of calamity operating system, database and file, can not affecting the performance of manufacturing side host computer system, is a kind of scheme being widely adopted.
It is synchronous that duplicating remote data based on storage need to carry out data first, exactly the data on original memory device is transferred in the memory device of far-end by remote link (being generally IP link).Due to high restriction for long-distance link rent, the bandwidth of IP link is conventionally lower, its numerical value is generally the order of magnitude of Mbps, and data volume on original memory device is generally terabyte (terabyte, TB) the order of magnitude, the data of transmitting the TB order of magnitude on this link need to expend the time of several months conventionally, consuming time oversize.A kind of solution is that calamity is moved to creation data center for memory device, utilizes local high bandwidth network to complete that data are synchronous first, and then calamity is moved to far-end disaster-tolerant backup data center for memory device.But because storage system is bulky, dismounting, transportation and mounting storage device may have the risk of damaging memory device and obliterated data.In addition,, in the time disaster occurring or drill, what on the memory device of Disaster Preparation Center, retain is up-to-date data, needs reverse sync to the memory device of the production center.Because memory device now has been deployed to data center, move more complicatedly, because user's latest data now only has portion, the risk of resettlement memory device is larger simultaneously.The invention provides a kind of method of data synchronization and system, synchronize by the data of utilizing movable storage medium to realize on the memory device of the production center and the memory device of Disaster Preparation Center, can solve the memory device of the production center and the memory device of Disaster Preparation Center in prior art carrying out data oversize or the inconvenience that brings due to resettlement memory device and risk of obliterated data consuming time while synchronizeing.
Summary of the invention
The embodiment of the present invention provides a kind of method of data synchronization and data synchronous system, can realize the first memory device and be positioned at the far-end of this first memory device and synchronize for the data of the second memory device of the standby storage of the calamity of this first memory device.
First aspect, provides a kind of method of data synchronization, comprising: the first memory device generates the snapshot of the data of storing in destination logical unit LUN, and when the data of storing in this target LUN are utilized Internet Transmission, required transmission duration exceeds transmission duration thresholding; The data in this snapshot are write movable storage medium by this first memory device; The second memory device reads and stores the data in this movable storage medium; Wherein, this second memory device is positioned at the far-end of this first memory device and the standby storage of calamity that this second memory device is this first memory device.
In conjunction with first aspect, in the possible implementation of the first, the data in this snapshot are write movable storage medium by this first memory device, comprising: by the data in the data in this snapshot and this snapshot, the stored position information in this first memory device writes this movable storage medium to this first memory device.
In conjunction with the possible implementation of the first of first aspect, in the possible implementation of the second, this second memory device reads and stores the data in this movable storage medium, comprising: this second memory device reads data in this movable storage medium and the stored position information of these data; This second memory device, according to the stored position information of these data, is stored to these data the local storage region of this second memory device.
In conjunction with the first or the possible implementation of the second of first aspect, in the third possible implementation, the stored position information of these data comprises: the world adopted name WWN of the LUN under these data and the logical block position LBA of these data in the LUN of this ownership.
In conjunction with the first or the second or the third possible implementation of first aspect, in the 4th kind of possible implementation, the method also comprises: if required transmission duration does not exceed this transmission duration thresholding when the data of the Data Update of storing in this first memory device and renewal are utilized Internet Transmission, this first memory device transmits the data of this renewal to this second memory device by network.
Second aspect, provides a kind of data synchronous system, comprising: the first memory device and the second memory device, and this second memory device is positioned at the far-end of this first memory device and the standby storage of calamity that this second memory device is this first memory device; This first memory device is for generating the snapshot of the data that destination logical unit LUN stores, and when the data of storing in this target LUN are utilized Internet Transmission, required transmission duration exceeds transmission duration thresholding; This first memory device is also for writing movable storage medium by the data of this snapshot; The data of the second memory device for reading and store this movable storage medium.
In conjunction with second aspect, in the possible implementation of the first, this first memory device is specifically for by the data in the data in this snapshot and this snapshot, the stored position information in this first memory device writes this movable storage medium.
In conjunction with the possible implementation of the first of second aspect, in the possible implementation of the second, this second memory device specifically for: read data in this movable storage medium and the stored position information of these data; According to the stored position information of these data, these data are stored to the local storage region of this second memory device.
In conjunction with the first or the possible implementation of the second of second aspect, in the third possible implementation, the stored position information of these data comprises: the world adopted name WWN of the LUN under these data and the logical block position LBA of these data in the LUN of this ownership.
In conjunction with the first or the second or the third possible implementation of second aspect, in the 4th kind of possible implementation, if required transmission duration does not exceed this transmission duration thresholding when the Data Update of storing in this first memory device and the data of renewal are utilized Internet Transmission, this first memory device is also for transmitting the data of this renewal to this second memory device by network.
Based on technique scheme, the method of data synchronization that the embodiment of the present invention provides, by the first memory device, data are write to movable storage medium and the second memory device reads and store the data on this mobile memory medium, wherein, this second memory device is positioned at the far-end of this first memory device and the standby storage of calamity that this second memory device is this first memory device, and the data that can realize this first memory device and this second memory device are synchronous.And compared with existing Internet Transmission mode, the method of data synchronization of the embodiment of the present invention can shorten data transmission period, and compared with the mode of existing resettlement memory device, the method for data synchronization of the embodiment of the present invention is easy to operate, and can reduce the risk of loss of data or damage.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, to the accompanying drawing of required use in the embodiment of the present invention or description of the Prior Art be briefly described below, apparently, described accompanying drawing is only some embodiments of the present invention below, for those of ordinary skills, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the indicative flowchart of the method for data synchronization of the embodiment of the present invention.
Fig. 2 is another indicative flowchart of the method for data synchronization of the embodiment of the present invention.
Fig. 3 is the indicative flowchart of the data synchronous system of the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is a part of embodiment of the present invention, rather than whole embodiment.
Should understand, the data first that the technical scheme of the embodiment of the present invention is mainly used in the memory device of the production center and the memory device of its Disaster Preparation Center are synchronizeed, also can be applied to the memory device of the production center and the memory device of Disaster Preparation Center needs other larger scene of data volume of synchronizeing, but the embodiment of the present invention is not limited to this.
Fig. 1 is the indicative flowchart of the method for data synchronization 100 of the embodiment of the present invention, and the method 100 can be carried out by data synchronous system.The method 100 can for by the data sync storage on the first memory device to the second memory device, wherein, this second memory device is positioned at the far-end of this first memory device and the standby storage of calamity that this second memory device is this first memory device.Alternatively, this first memory device can be the memory device of the production center, and this production center can comprise the equipment such as the network equipment such as switch, router, server and this first memory device, so that service to be externally provided.Correspondingly, this second memory device can be the memory device of the Disaster Preparation Center of this production center, and this Disaster Preparation Center and this production center distant, but the embodiment of the present invention does not limit this.Alternatively, as another embodiment, when this first memory device and the second memory device are when the other side's calamity is for memory device each other, when the method also can be damaged or lose for the data on this first memory device, by the data sync storage on this second memory device, to this first memory device, the embodiment of the present invention does not limit this.As shown in Figure 1, the method 100 comprises:
S110, the first memory device generates the snapshot of the data of storage in destination logical unit number (Logic Unit Number, LUN), and when the data of storing in this target LUN are utilized Internet Transmission, required transmission duration exceeds transmission duration thresholding.
This transmission duration thresholding can be arranged according to demand by user, is specifically as follows a numerical value, can be also a number range or expression formula, and the embodiment of the present invention is not limited to this.
In the time that this first memory device is normally worked, optical-fibre channel (the Fiber Channel of this first memory device, FC) mode of operation of port is target (Target) pattern, and in order to identify movable storage medium, for example, tape library, the mode of operation of at least one FC port of this first memory device can be in tickler (Initiator) pattern.In addition, this movable storage medium can be with this first memory device in identical storage area network (Storage Area Network, SAN) in, and at least one FC port of this of the FC port of this movable memory equipment and this first memory device is arranged in the same region (Zoning) of this SAN, make this first memory device can detect and identify this movable storage medium.
After this first memory device detects this movable storage medium, or before this first memory device detects this movable storage medium, this first memory device can be determined at least one target LUN, and generates all data of storing in this at least one target LUN snapshot at a time.Alternatively, this first memory device can be determined this at least one target LUN according to user instruction, but the embodiment of the present invention is not limited to this.
S120, the data in this snapshot are write movable storage medium by this first memory device.
This movable storage medium, than this first memory device and this second memory device, is easy to resettlement.Alternatively, this movable storage medium can be tape library, can be also mobile disk, and the embodiment of the present invention does not limit this.
S130, the second memory device reads and stores the data in this movable storage medium.
After the data in this snapshot are write this movable storage medium by this first memory device, this movable storage medium can be by resettlement to this second memory device end.Alternatively, this movable storage medium can be linked into the SAN identical with this second memory device, and the FC port of this movable storage medium and at least one mode of operation of this second memory device are set to the FC port of tickler in the same Zoning district of this SAN, to make this second memory device can detect and identify this movable storage medium.
After this second memory device detects this movable storage medium, this second memory device can read the data in this movable storage medium, and these data that read are stored to the local storage region of this second memory device, but the embodiment of the present invention is not limited to this.
Therefore, the method for data synchronization of the embodiment of the present invention, writes movable storage medium by the first memory device by data and the second memory device reads and store the data on this mobile memory medium.Wherein, this second memory device is positioned at the far-end of this first memory device and the standby storage of calamity that this second memory device is this first memory device, and the data that can realize this first memory device and this second memory device are synchronous.And compared with existing Internet Transmission mode, the method for data synchronization of the embodiment of the present invention can shorten data transmission period; And compared with the mode of existing resettlement memory device, the method for data synchronization of the embodiment of the present invention is easy to operate, and can reduce the risk of loss of data or damage.
Alternatively, as another embodiment, as shown in Figure 2, and S120, the data in this snapshot are write movable storage medium by the first memory device, comprising:
S121, by the data in the data in this snapshot and this snapshot, the stored position information in this first memory device writes this movable storage medium to this first memory device.
The stored position information of these data can be for these data of mark, and when making these data be read and store by the second memory device, this second memory device can be stored this data according to this stored position information, but the embodiment of the present invention is not limited to this.
As shown in Figure 2, S130, this second memory device reads and stores the data in this movable storage medium, comprising:
S131, this second memory device reads data in this movable storage medium and the stored position information of these data;
S132, this second memory device, according to the stored position information of these data, is stored to these data the local storage region of this second memory device.
This second memory device can be stored this data according to the stored position information of these data, to make the memory location of these data on this second memory device corresponding with the memory location of these data on this first memory device, but the embodiment of the present invention is not limited to this.
Alternatively, the stored position information of these data comprises: the world adopted name WWN of the LUN under these data and the logical block position LBA of these data in the LUN of this ownership.
Alternatively, as another embodiment, the stored position information of these data can be also the out of Memory that can determine the memory location of these data, and the embodiment of the present invention is not limited to this.
Alternatively, as another embodiment, this first memory device is before writing this movable storage medium by the data in this snapshot, this first memory device also can be encoded to the data in this snapshot, for example, CRC (Cyclic Redundancy Check, CRC) coding, and the data after coding are write to this movable storage medium.Correspondingly, this second memory device, can be to the decoding data reading after the data that read in this movable storage medium, and decoded data is stored to the local storage region of this second memory device, but the embodiment of the present invention is not limited to this.
Alternatively, as another embodiment, after this first memory device is synchronizeed first with the data on this second memory device, can this first memory device be carried out to increment with the data on this second memory device take some cycles as interval and synchronize, be synchronized on another memory device by the data of upgrading on a memory device in this first memory device and this second memory device.Now, if when more the data volume of new data is less, can Adoption Network the mode of transmission to carry out increment synchronous, correspondingly, the method 100 also comprises:
S140, if required transmission duration does not exceed this transmission duration thresholding when the data volume of the Data Update of storing in this first memory device and renewal is utilized Internet Transmission, this first memory device transmits the data of this renewal to this second memory device by network.
Before this S140, this first memory device can also be set up data Replica corresponding relation with this second memory device.Particularly, all can installation data propagation software on this first memory device and this second memory device, and the data Replica opposite equip. that one of them equipment that this data Replica software makes this first memory device and the second memory device is another equipment is set.Like this, while having Data Update in this first memory device or this second memory device, just can transmit by network the data of this renewal to the other side, but the embodiment of the present invention is not limited to this.
Therefore, the method of data synchronization of the embodiment of the present invention, by the first memory device, data are write to movable storage medium and the second memory device reads and store the data on this mobile memory medium, wherein, this second memory device is positioned at the far-end of this first memory device and the standby storage of calamity that this second memory device is this first memory device, the data that can realize this first memory device and this second memory device are synchronous, and compared with existing Internet Transmission mode, the method of data synchronization of the embodiment of the present invention can shorten data transmission period, and compared with the mode of existing resettlement memory device, the method of data synchronization of the embodiment of the present invention is easy to operate, and can reduce the risk of loss of data or damage.
Should be understood that above-mentioned each process sequence number size and do not mean that the priority of execution sequence, the execution sequence of each process should determine with its function and internal logic, and should not form any restriction to the implementation process of the embodiment of the present invention.
Above, in conjunction with Fig. 1 and Fig. 2, describe the method for data synchronization according to the embodiment of the present invention in detail, below in conjunction with Fig. 3, describe according to the data synchronous system of the embodiment of the present invention.
Fig. 3 shows according to the schematic block diagram of the data synchronous system 200 of the embodiment of the present invention, as shown in Figure 3, this data synchronous system 200 comprises: the first memory device 210 and the second memory device 220, and this second memory device 220 is positioned at the far-end of this first memory device 210 and the standby storage of calamity that this second memory device 220 is this first memory device 210;
This first memory device 210 is for the snapshot of the data that generate destination logical unit LUN and store, and when the data of storing in this target LUN are utilized Internet Transmission, required transmission duration exceeds transmission duration thresholding;
This first memory device 210 is also for writing movable storage medium by the data of this snapshot;
The second memory device 220 is for reading and store the data of this movable storage medium.
Therefore, the data synchronous system of the embodiment of the present invention, writes movable storage medium by the first memory device by data and the second memory device reads and store the data on this mobile memory medium.Wherein, this second memory device is positioned at the far-end of this first memory device and the standby storage of calamity that this second memory device is this first memory device, and the data that can realize this first memory device and this second memory device are synchronous.And compared with existing Internet Transmission mode, the method for data synchronization of the embodiment of the present invention can shorten data transmission period; And compared with the mode of existing resettlement memory device, the method for data synchronization of the embodiment of the present invention is easy to operate, and can reduce the risk of loss of data or damage.
Alternatively, this first memory device 210 is specifically for by the data in the data in this snapshot and this snapshot, the stored position information in this first memory device writes this movable storage medium.
Alternatively, as another embodiment, this second memory device 220 specifically for:
Read data in this movable storage medium and the stored position information of these data;
According to the stored position information of these data, these data are stored to the local storage region of this second memory device.
Alternatively, as another embodiment, the stored position information of these data comprises: the world adopted name WWN of the LUN under these data and the logical block position LBA of these data in the LUN of this ownership.
Alternatively, as another embodiment, if required transmission duration does not exceed this transmission duration thresholding when in this first memory device 210, the Data Update of storage and the data of renewal are utilized Internet Transmission, this first memory device 210 is also for the data to these the second memory device 220 these renewals of transmission by network.
Alternatively, as another embodiment, before this first memory device 210 transmits the data of these renewals by network to this second memory device 220, this first memory device 210 and this second memory device 220 are also for setting up data Replica corresponding relation with the other side.
Can be corresponding to according to the first memory device in the method for data synchronization of the embodiment of the present invention according to the first memory device in the data synchronous system 200 of the embodiment of the present invention, the second memory device in this data synchronous system 200 can be corresponding to according to the second memory device in the method for data synchronization of the embodiment of the present invention, and above-mentioned and other operation of the modules in this data synchronous system 200 and/or function are respectively in order to realize the corresponding flow process of each method in Fig. 1 and Fig. 2, for simplicity, do not repeat them here.
Should be understood that in embodiments of the present invention, term "and/or" is only a kind of incidence relation of describing affiliated partner, and expression can exist three kinds of relations.For example, A and/or B, can represent: individualism A exists A and B, these three kinds of situations of individualism B simultaneously.In addition, character "/" herein, generally represents that forward-backward correlation is to liking a kind of relation of "or".
Those of ordinary skills can recognize, in conjunction with the various method steps of describing in embodiment disclosed herein and unit, can realize with electronic hardware, computer software or the combination of the two.For the interchangeability of hardware and software is clearly described, step and the composition of each embodiment described according to function in the above description in general manner.These functions are carried out with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Those of ordinary skills can realize described function with distinct methods to each specifically should being used for, but this realization should not thought and exceeds scope of the present invention.
Those skilled in the art can be well understood to, and for convenience of description and succinctly, the specific works process of the system of foregoing description, device and unit, can, with reference to the corresponding process in preceding method embodiment, not repeat them here.
In the several embodiment that provide in the application, should be understood that disclosed system, apparatus and method can realize by another way.For example, device embodiment described above is only schematic, for example, the division of described unit, be only that a kind of logic function is divided, when actual realization, can have other dividing mode, for example multiple unit or assembly can in conjunction with or can be integrated into another system, or some features can ignore, or do not carry out.In addition, shown or discussed coupling each other or direct-coupling or communication connection can be indirect coupling or communication connections by some interfaces, device or unit, can be also electric, machinery or other form connect.
The described unit as separating component explanation can or can not be also physically to separate, and the parts that show as unit can be or can not be also physical locations, can be positioned at a place, or also can be distributed in multiple network element.Can select according to the actual needs some or all of unit wherein to realize the object of embodiment of the present invention scheme.
In addition, the each functional unit in each embodiment of the present invention can be integrated in a processing unit, can be also that the independent physics of unit exists, and can be also that two or more unit are integrated in a unit.Above-mentioned integrated unit both can adopt the form of hardware to realize, and also can adopt the form of SFU software functional unit to realize.
If described integrated unit is realized and during as production marketing independently or use, can be stored in a computer read/write memory medium using the form of SFU software functional unit.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words, or all or part of of this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprise that some instructions (can be personal computers in order to make a computer equipment, server, or the network equipment etc.) carry out all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (Read-Only Memory, referred to as " ROM "), the various media that can be program code stored such as random access memory (Random Access Memory, referred to as " RAM "), magnetic disc or CD.
The above; it is only the specific embodiment of the present invention; but protection scope of the present invention is not limited to this; any be familiar with those skilled in the art the present invention disclose technical scope in; the modification of the various equivalences that can expect or replacement, within these modifications or replacement all should be encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (10)
1. a method of data synchronization, is characterized in that, comprising:
The first memory device generates the snapshot of the data of storing in destination logical unit LUN, and when the data of storing in described target LUN are utilized Internet Transmission, required transmission duration exceeds transmission duration thresholding;
The data in described snapshot are write movable storage medium by described the first memory device;
The second memory device reads and stores the data in described movable storage medium;
Wherein, described the second memory device is positioned at the far-end of described the first memory device and the standby storage of calamity that described the second memory device is described the first memory device.
2. method according to claim 1, is characterized in that, the data in described snapshot are write movable storage medium by described the first memory device, comprising:
By the data in the data in described snapshot and described snapshot, the stored position information in described the first memory device writes described movable storage medium to described the first memory device.
3. method according to claim 2, is characterized in that, described the second memory device reads and store the data in described movable storage medium, comprising:
Described the second memory device reads data in described movable storage medium and the stored position information of described data;
Described the second memory device, according to the stored position information of described data, is stored to described data the local storage region of described the second memory device.
4. according to the method in claim 2 or 3, it is characterized in that, the stored position information of described data comprises: world adopted name WWN and the logical block position LBA of described data in the LUN of described ownership of the LUN under described data.
5. according to the method described in any one in claim 1 to 4, it is characterized in that, described method also comprises:
If required transmission duration does not exceed described transmission duration thresholding when the Data Update of storing in described the first memory device and the data of renewal are utilized Internet Transmission, described the first memory device transmits the data of described renewal to described the second memory device by network.
6. a data synchronous system, comprising: the first memory device and the second memory device, and described the second memory device is positioned at the far-end of described the first memory device and the standby storage of calamity that described the second memory device is described the first memory device;
Described the first memory device is for generating the snapshot of the data that destination logical unit LUN stores, and when the data of storing in described target LUN are utilized Internet Transmission, required transmission duration exceeds transmission duration thresholding;
Described the first memory device is also for writing movable storage medium by the data of described snapshot;
The data of the second memory device for reading and store described movable storage medium.
7. system according to claim 6, is characterized in that, described the first memory device is specifically for by the data in the data in described snapshot and described snapshot, the stored position information in described the first memory device writes described movable storage medium.
8. system according to claim 7, is characterized in that, described the second memory device specifically for:
Read data in described movable storage medium and the stored position information of described data;
According to the stored position information of described data, described data are stored to the local storage region of described the second memory device.
9. according to the system described in claim 7 or 8, it is characterized in that, the stored position information of described data comprises: world adopted name WWN and the logical block position LBA of described data in the LUN of described ownership of the LUN under described data.
10. according to the system described in any one in claim 6 to 9, it is characterized in that, if required transmission duration does not exceed described transmission duration thresholding when the Data Update of storing in described the first memory device and the data of renewal are utilized Internet Transmission, described the first memory device is also for transmitting the data of described renewal to described the second memory device by network.
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| Application Number | Priority Date | Filing Date | Title |
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| PCT/CN2013/087721 WO2015074260A1 (en) | 2013-11-22 | 2013-11-22 | Data synchronization method and data synchronization system |
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| CN103843309A true CN103843309A (en) | 2014-06-04 |
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| WO (1) | WO2015074260A1 (en) |
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| WO2015074260A1 (en) * | 2013-11-22 | 2015-05-28 | 华为技术有限公司 | Data synchronization method and data synchronization system |
| WO2016107443A1 (en) * | 2014-12-31 | 2016-07-07 | 华为技术有限公司 | Snapshot processing method and related device |
| CN106529261A (en) * | 2016-10-25 | 2017-03-22 | 公安部第三研究所 | UKey and method used for synchronization of offline business data |
| CN109614047A (en) * | 2018-12-10 | 2019-04-12 | 浪潮(北京)电子信息产业有限公司 | Transmission method, storage system and the readable storage medium storing program for executing of IO between a kind of host |
| CN113553005A (en) * | 2021-07-06 | 2021-10-26 | 杭州宏杉科技股份有限公司 | Data reading and writing method, device and equipment for simplifying LUN |
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| CN113553005B (en) * | 2021-07-06 | 2023-12-22 | 杭州宏杉科技股份有限公司 | Data read-write method, device and equipment for simplifying LUN |
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| WO2015074260A1 (en) | 2015-05-28 |
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