CN102147638A - Data copy device and data copy method - Google Patents
Data copy device and data copy method Download PDFInfo
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- CN102147638A CN102147638A CN2011100347437A CN201110034743A CN102147638A CN 102147638 A CN102147638 A CN 102147638A CN 2011100347437 A CN2011100347437 A CN 2011100347437A CN 201110034743 A CN201110034743 A CN 201110034743A CN 102147638 A CN102147638 A CN 102147638A
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Abstract
The invention provides a data copy device and a data copy method, which can improve the reliability of generating time of copy data. The data copy device comprises a first storage part used for storing data as copy object, and a data copy part which obtains time from the external data copy device when the data is copied to a second storage part different from the first storage part and sets the obtained time as a copying time.
Description
Technical field
The present invention relates to the technology of copy data.
Background technology
In computing machine preserve the various data such as document data that the user generates in the built-in memory storage.For example, known following technology: also can restore data under the situation that the data that cause being preserved for the data disappearance that causes in the fault owing to memory storage, corrupted data etc. have problems, and carry out the backup of data.When restore data, because will be with reference to time of the backup of carrying out data the rise time of Backup Data (promptly), therefore, preferably the rise time of Backup Data is accurate.(Network Time Protocol: NTP (Network Time Protocol)) (for example: patent documentation 1): this Network Time Protocol is used to make the clock that device had that is connected with network and correct time synchronized as the known following Network Time Protocol of the technology that correct time is provided.But present situation is: in the past, fully do not pay attention to the reliability of the rise time of Backup Data.
In addition, though under the situation that the simple data that with the backup are not purpose are duplicated also the rise time of preferred data of duplicating correct.
Patent documentation 1: TOHKEMY 2004-152120 communique
Patent documentation 2: TOHKEMY 2003-29868 communique
Summary of the invention
The problem that invention will solve
The reliability of copy data rise time when the objective of the invention is to improve data and duplicating.
The scheme that is used to deal with problems
The present invention finishes for a part that addresses the above problem at least, can realize by following mode or application examples.
[application examples 1]
A kind of data copy device is characterized in that, possesses:
First storage part, it is used to preserve the data as duplicate object; And
Data are duplicated portion, and it is when copying to above-mentioned data second storage part different with above-mentioned first storage part, and the time set that will get access to from the outside of above-mentioned data copy device is the time when carrying out above-mentioned duplicating of duplicating.
According to this structure since the data portion of the duplicating time set that will get access to time when being duplicating of carrying out that data duplicate from the outside of data copy device therefore, can improve the reliability of the copy data rise time when data are duplicated.
[application examples 2]
According to application examples 1 described data copy device, it is characterized in that,
Also possess the current time acquisition unit, the current time of time when it obtains the expression visit by the access to netwoks external device (ED), this external device (ED) provides the time that becomes benchmark,
Above-mentioned data are duplicated portion when above-mentioned data being copied to second storage part different with above-mentioned first storage part, make above-mentioned current time acquisition unit obtain the above-mentioned current time, under the situation of successfully obtaining the above-mentioned current time, the time set that above-mentioned current time acquisition unit is got access to is the time when carrying out above-mentioned duplicating of duplicating.
According to this structure, because the data portion of duplicating time when being set at current time that will get access to duplicating of carrying out that data duplicate from the external device (ED) that the time that becomes benchmark is provided, therefore, the reliability of the copy data rise time in the time of can improving data and duplicate.
[application examples 3]
According to application examples 2 described data copy devices, it is characterized in that,
Above-mentioned current time acquisition unit is visited a plurality of said external devices that are present on the network successively according to the priority orders that is predetermined, and attempts obtaining the above-mentioned current time.
According to this structure, because the current time acquisition unit is visited a plurality of external device (ED)s that are present on the network successively according to the priority orders that is predetermined, attempt obtaining the current time, therefore, compare with the situation of only visiting single external device (ED), can improve the probability that successfully obtains the current time.
[application examples 4]
According to application examples 2 or 3 described data copy devices, it is characterized in that,
Also possess the time input part, it receives the time of user's input,
The above-mentioned data portion of duplicating also carries out following operation: under the situation of obtaining above-mentioned current time failure, the above-mentioned data portion of duplicating obtains the time that above-mentioned time input part is imported, and the time set that will get access to from above-mentioned time input part is the time when carrying out above-mentioned duplicating of duplicating.
According to this structure, owing to obtaining under the kaput situation of current time, the time when time set that the data portion of duplicating will get access to from the time input part is duplicating of carrying out that data duplicate, therefore, the reliability of the copy data rise time in the time of can improving data and duplicate.
[application examples 5]
Each described data copy device according in the application examples 1 to 4 is characterized in that,
The above-mentioned data portion of duplicating also carries out following operation: under the situation of successfully obtaining the above-mentioned current time, the above-mentioned data portion of duplicating proofreaies and correct above-mentioned data copy device clock internal and is the time from above-mentioned current time acquisition unit gets access to.
According to this structure, the data copy device clock internal can be proofreaied and correct the time of being obtained for the current time acquisition unit.
In addition, the present invention can accomplished in various ways.For example, the present invention can realize as follows: data copy device, data copy method, data copy system and being used to realize the function of these methods or device computer program, stored the storage medium of this computer program etc.
Description of drawings
Fig. 1 is the key diagram of expression as the summary structure of the data copy device of one embodiment of the present of invention.
Fig. 2 is the key diagram of the structure of summary ground expression personal computer (PC).
Fig. 3 is the process flow diagram of the flow process of expression data replication processes.
Fig. 4 is the key diagram that is illustrated in an example of input picture shown among the step S108 of data replication processes.
Fig. 5 is the process flow diagram that express time obtains the flow process of processing.
Fig. 6 is the key diagram of an example that expression is used to specify the picture of priority orders information PT.
Fig. 7 is the key diagram of expression by an example of the copy data that data copy device generated.
Description of reference numerals
10: data copy device; 20: personal computer; 30: hard disk; 100:CPU; 110: data are duplicated portion; 120: the time synchronized client; 130: the internal system clock; 200: hard disk; 300:RAM; 400:ROM; 500: IO interface; 600: network interface; The 700:USB interface; INET: the Internet; NTP1～3: time management server; KB: keyboard; DP: display; DT: data; PT: priority orders information; PW: priority orders is formulated picture; EW: input picture; MOU: mouse.
Embodiment
Next, according to embodiment embodiments of the present invention are described in the following order.
A. embodiment:
Fig. 1 is the key diagram of expression as the summary structure of the data copy device 10 of one embodiment of the present of invention.This data copy device 10 comprises personal computer (below, be also referred to as PC) 20 and hard disk 30.In addition, data copy device 10 can be connected with external device (ED) (time management server NTP1～3) on being present in network communicatedly by the Internet INET.
Time management server NTP1～3 provide the server of the information of the time that becomes benchmark.Specifically, time management server NTP1～3rd is used for according to Network Time Protocol (Network Time Protocol: NTP (Network Time Protocol)), provide the server based on the information of time of Coordinated Universal Time(UTC) (UTC:Universal Time Coordinated).For example can utilize by university or research institute, (Internet Services Provider: the server that the ISP) provides is as time management server NTP1～3 for the ISP of large enterprises.
Fig. 2 is the key diagram of the structure of summary ground expression personal computer 20.Personal computer 20 comprises CPU 100, hard disk 200, RAM 300, ROM 400, IO interface (input and output IF) 500, network interface (NW IF) 600 and USB interface (USB IF) 700.Each structural detail of personal computer 20 interconnects by bus.
By carrying out the computer program of being preserved among the ROM 400, CPU 100 duplicates portion 110, time synchronized client 120, internal system clock 130 and UI module 140 and the performance function as data.Data are duplicated the function (for example, from the function of first storage part to the second storage part copy data) that portion 110 has copy data.As the time synchronized client 120 of current time acquisition unit is NTP Client according to Network Time Protocol.Internal system clock 130 is onboard clocks of personal computer 20.UI module 140 has following function: show on display DP in the input picture, receive the user's of data copy device 10 input operation.The back describes these each function portions in detail.
Preserve data DT and priority orders information PT in the hard disk 200 as first storage part.Data DT is the data that become the duplicate object of data copy device 10.The various data such as data that comprise the document data that generates by the user among the data DT, generate by system.Priority orders information PT be with to being present in a plurality of time management server NTP1～relevant information of 3 pre-assigned priority orders on the Internet INET.The title, IP address, Stratum (being illustrated in the value which layer this device in ntp server group's the hierarchy is positioned at) etc. that in priority orders information PT, can comprise time management server NTP1～3.Priority orders information PT specifies (back detailed description) in advance by the user of data copy device 10.
Be connected with on the IO interface 500 of personal computer 20 as input media keyboard KB, mouse MOU and as the display DP of display device.Network interface 600 is the interfaces when data copy device 10 is connected with network.USB interface 700 is to be used for interface that various peripherals are connected with data copy device 10.In the present embodiment, the external hard disk 30 that connects as second storage part by USB interface 700.
Fig. 3 is the process flow diagram of the flow process of expression data replication processes.Data are duplicated portion 110 to the request (step S100) of obtaining processing as time synchronized client 120 transmitting times of current time acquisition unit.Time obtains and handles is by the outside time management server of network (the Internet INET) visit, the processing of the information of time when obtaining visit (below be also referred to as " current time ").The back is described in detail.Data are duplicated portion 110 and are judged whether that according to the response from time synchronized client 120 success has got access to the current time (step S102).
Under the situation that successfully gets access to the current time (step S102: be), it is the current time (step S104) that gets access to the time adjustment of internal system clock 130 that data are duplicated portion 110.Data are duplicated data DT that portion 110 preserved in will the hard disk 200 as first storage part and are copied to hard disk 30 as second storage part.In addition, with the time when duplicating of the time set shown in the internal system clock 130, the time (step S106) of promptly having duplicated data DT.The setting of time is meant that the data DT that will duplicate preserves explicitly with the information of the rise time of expression copy data, for example, can realize in the following way when duplicating.
I) generate rise time of copy data new file, in this document folder, preserve the data DT that duplicates as folder name.
Ii) rise time of giving copy data to the part of the file name of the data DT that duplicates.
In addition, step S104 can omit.Under the situation of omitting step S104, data are duplicated portion 110 time when the current time that gets access among the step S100 is set at duplicating of data DT in step S106.
On the other hand, (step S102: not), data are duplicated portion 110 and are made the input picture (step S108) that shows the time as the UI module 140 of time input part under the situation of obtaining the current time failure.
Fig. 4 is the key diagram that is illustrated in an example of input picture shown among the step S108 of data replication processes.Input picture EW is the picture that is used to receive from the information of the time that the user of data copy device 10 imports.Input picture EW comprises time set field ET, start button EO and cancel button EC.The time of acquiescence display system internal clocking 130 among the time set field ET.The user of data copy device 10 presses start button EO after the value that changes time set field ET as required.By pressing start button EO, UI module 140 sends the information of the time that is set to time set field ET as the response of data being duplicated portion 110, end process.
Data are duplicated portion 110 according to the correction (Fig. 3: step S110) that judges whether the time of having carried out from the response of UI module 140.Specifically, for example, compare, can judge whether the information of the time of having proofreaied and correct by information and the information of the time shown in the internal system clock 130 to time of getting access to from UI module 140.Under the situation of the information that is judged as the time of having proofreaied and correct (step S110: be), it is the time (step S112) that gets access to the time adjustment of internal system clock 130 that data are duplicated portion 110.Afterwards, processing forwards step S106 to.On the other hand, (step S110: not), handle forwarding step S106 under the situation that is judged as the information that does not have correction time.
In addition, step S112 can omit.Under the situation of having omitted step S112, data are duplicated portion 110 time when the information setting of time of getting access among the step S108 is duplicating of data DT in step S106.
Fig. 5 is the process flow diagram that express time obtains the flow process of processing.Time synchronized client 120 is obtained the priority orders information PT (step S200) that is preserved in the hard disk 200.Time synchronized client 120 is obtained request command (step S202) to what priority orders in priority orders information PT was set to that five-star time management server sends the current time.Time synchronized client 120 judges whether that success has got access to the current time (step S204).Specifically, with under the interior situation that receives the response that time management server makes above-mentioned request, can be judged as success and get access to the current time at the appointed time.Under the situation that successfully gets access to the current time (step S204: be), time synchronized client 120 send from current time that time management server gets access to as the response of data being duplicated portion 110, end process (step S206).
On the other hand, (step S204: not), time synchronized client 120 judges whether to be assigned other times management server (step S208) according to the information of being preserved among the priority orders information PT under the situation of obtaining the current time failure.Be assigned also in priority orders information PT under the situation of other times management server that (step S208: not), time synchronized client 120 is obtained request command (step S210) to what priority orders in priority orders information PT was set to that higher next time management server sends the current time.Afterwards, processing forwards step S204 to.
In step S208, in priority orders information PT, do not distribute under the situation of other times management server (step S208: be), 120 pairs of data of time synchronized client are duplicated portion 110 and are sent the response that the meaning of current time failure is obtained in expression, end process (step S212).Like this, time synchronized client 120 attempted obtaining the current time according to the priority orders of being preserved among priority orders information PT access time management server successively before successfully obtaining the current time or being kept at end of message (EOM) among the priority orders information PT.
Fig. 6 is the key diagram of an example that expression is used to specify the picture of priority orders information PT.Priority orders assigned picture PW is used for being present in the picture of a plurality of time management server assigned priority orders on the Internet INET.In decision during to the priority orders of a plurality of time management servers, the priority orders that preferably will be positioned near the time management server the position that data copy device 10 is set is made as higher.This is because the deviation of the near more acquisition time that is caused by call duration time of the distance of time management server and data copy device 10 is more little.
Priority orders assigned picture PW comprises postcode input field PZ, index button PS, server list PL, interpolation button PA, delete button PD, priority orders tabulation PP, confirming button PO and cancel button PC.The postcode that the user of data copy device 10 will be provided with the position of data copy device 10 is input to postcode input field PZ, presses index button PS.By pressing index button PS, UI module 140 is used not shown time management server database, and retrieval is positioned at the alternative services device by near the time management server in the residence of postcode input field PZ appointment.UI module 140 is presented at the alternative services device of the time management server that retrieves on the server list PL.The demonstration that is preferably server list PL is for example according to sorting with distance by the residence of postcode input field PZ appointment.
The user of data copy device 10 selects time management server arbitrarily from server list PL, presses and adds button PA.Add button PA by pressing, UI module 140 is added the time management server that utilizes server list PL to select to priority orders tabulation PP.On the other hand, by pressing delete button PD, the time management server that UI module 140 will utilize priority orders tabulation PP to select is deleted from priority orders tabulation PP.The user of data copy device 10 presses confirming button PO after editing priority orders tabulation PP as mentioned above like that.By pressing confirming button PO, UI module 140 will be referred to be saved in the hard disk 200 as priority orders information PT by the information of the specified time management server of priority orders tabulation PP.
Fig. 7 is the key diagram of expression by an example of the copy data that data copy device generated.Fig. 7 shows the function of the explorer that is loaded in the not shown operating system of utilizing in the hard disk 200 to be stored and the picture W1 that demonstrates.In addition, explorer is following software: can show the tabulation of the equipment that is connected on storage mediums such as the hard disk that comprised in the personal computer 20 and the personal computer 20 on display DP, and can retrieve, browse it etc.
Include file clip directory tree viewing area FT and document display area territory FL on picture W1.The tabulation of the equipment that is connected on the storage medium of the hard disk that on directory tree, is comprised in the demonstration personal computer 20 among the folder content tree viewing area FT etc. and the personal computer 20.At this, select hard disk 30 (in Fig. 7, being labeled as " HD-XXXX ") as second storage part.
In the FL of document display area territory, show content as the hard disk 30 of second storage part.In the example of Fig. 7, preserve three files (file F1～F3) in the hard disk 30.Rise time by file F1～F3 being given copy data is respectively set the time when duplicating as folder name.Specifically, for example, the title of file F1 " 2010_0201_1030 " expression this document folder (and copy data of being preserved in the file) is created on 10: 30 of on February 1st, 2010.In each file, preserve the data DT that duplicates.
Like this, the user of data copy device 10 is by the information of time of being given in the reference Folder Name, can easily utilize the data DT that is preserved in the file and carries out resuming operation of data etc.In addition, because the information of time of being given is the time that the time management server from the outside gets access in the Folder Name, therefore, can guarantee higher reliability.In addition, when restore data, except the method for using explorer as described above, can also prepare special-purpose application program etc.
According to above embodiment, data are duplicated portion 110 and are updated to after the time that the external device (ED) (time management server) that the time that becomes benchmark is provided gets access in the time with internal system clock 130, the time when time set shown in the internal system clock 130 is duplicating of carrying out that data DT duplicates.Promptly, because the time set that will get access to from the outside (time management server) of data copy device is to carry out the time that data are duplicated, therefore, the reliability of the copy data rise time in the time of can improving data and duplicate.
And, visit a plurality of external device (ED)s (time management server) that are present on the network as the time synchronized client 120 of current time acquisition unit successively according to the priority orders information PT that is predetermined, attempt obtaining the current time.Therefore, compare, can improve the probability that successfully obtains the current time with the situation of only visiting single external device (ED).
And, under the situation of obtaining the current time failure, data duplicate portion 110 according to after having upgraded the time of internal system clock 130 from the time of input picture EW input, the time when time set shown in the internal system clock 130 is duplicating of having carried out that data DT duplicates.Even promptly obtaining under the situation of current time failure, because the time set that will get access to time when being duplicating of carrying out that data duplicate from the time input part, therefore, the reliability of the copy data rise time in the time of also can improving data and duplicate.
And, because data are duplicated the time that portion 110 utilizes the current time corrective system internal clocking 130 that gets access to from the external device (ED) (time management server) that the time that becomes benchmark is provided, therefore, can be with the time adjustment of internal system clock 130 from the time management server of the outside time that get access to, that reliability is higher.Therefore, can improve the user's of data copy device 10 convenience.
B. variation:
In addition, the present invention is not limited to the foregoing description, embodiment, can implement in every way in the scope that does not break away from its aim, for example, also can carry out following distortion.
B1. variation 1:
In the above-described embodiments, to duplicate portion 110 will be the time of duplicating of having carried out data from current time that time management server gets access to or from the time set of input picture EW input to data.But time management server, input picture EW only are the examples from the method for the outside acquisition time of data copy device, can adopt arbitrary method from the method for outside acquisition time.For example, can also adopt following structure: the user of the data copy device time that input will be set at every turn when carrying out the duplicating of data, this this time that will set is made as carries out the time that data are duplicated.
B2. variation 2:
In the above-described embodiments, illustration time management server NTP1～3 that are connected with data copy device 10 by the Internet INET examples as external device (ED).But external device (ED) also can adopt the mode different with the foregoing description so long as provide the device of the time that becomes benchmark to get final product in the outside of data copy device 10.For example, also can use the interior specific personal computer of LAN (Local Area Network) as external device (ED).In addition, the platform number of external device (ED) also can adopt any platform (both can be, and also can be many).
In addition, in the foregoing description, be illustrated as time management server to use ntp server according to Network Time Protocol.But time management server can adopt time management server arbitrarily.For example, also the time management according to http protocol can be used as time management server with the WEB server.In this case, 120 pairs of time managements of time synchronized client are obtained request with the website transmitting time that the WEB server is provided.The time that time management can transmission itself be managed with the WEB server is as to this request responding.
B3. variation 3:
In the above-described embodiments, time synchronized client 120 attempts visiting successively a plurality of time management servers according to priority orders information PT.But, can omit priority orders information PT.In this case, time synchronized client 120 only sends the request command that obtains of current time to the single time management server that is predetermined.
B4. variation 4:
In the above-described embodiments, the structure to data reproducing unit 10 is illustrated.But the structure of the data copy device 10 shown in the foregoing description only is an example, can adopt structure arbitrarily.For example, can omit personal computer 20 structural detail a part or to the distortion of personal computer 20 further additional structural elements etc.Specifically, for example, can not the peripheral hardware hard disk also as the hard disk 30 of second storage part, (both can be the zone of the part in the hard disk 200, also can be the hard disk different with hard disk 200 but be built in the hard disk of personal computer 20.)。
And, also can use hard disk storage medium in addition, for example DVD, compact flash (Compact Flash (registered trademark)) etc. are as first storage part, second storage part.
B5. variation 5:
In the above-described embodiments, UI module 140 shown pictures are illustrated.But the picture shown in the foregoing description (input picture EW, priority orders assigned picture PW) but be an example can adopt mode arbitrarily.For example, can be out of shape by project, a part of button of omission or the further additional structural elements etc. of omitting picture.In addition, the picture of each shown in the foregoing description can omit.
Claims (6)
1. data copy device is characterized in that possessing:
First storage part, it is used to preserve the data as duplicate object; And
Data are duplicated portion, and it is when copying to above-mentioned data second storage part different with above-mentioned first storage part, and the time set that will get access to from the outside of above-mentioned data copy device is the time when carrying out above-mentioned duplicating of duplicating.
2. data copy device according to claim 1 is characterized in that,
Also possess the current time acquisition unit, the current time of time when this current time acquisition unit is obtained the expression visit by the access to netwoks external device (ED), this external device (ED) provides the time that becomes benchmark,
Above-mentioned data are duplicated portion when above-mentioned data being copied to second storage part different with above-mentioned first storage part, make above-mentioned current time acquisition unit obtain the above-mentioned current time, under the situation of successfully obtaining the above-mentioned current time, the time set that above-mentioned current time acquisition unit is got access to is the time when carrying out above-mentioned duplicating of duplicating.
3. data copy device according to claim 2 is characterized in that,
Above-mentioned current time acquisition unit is visited a plurality of said external devices that are present on the network successively according to the priority orders that is predetermined and is attempted obtaining the above-mentioned current time.
4. according to claim 2 or 3 described data copy devices, it is characterized in that,
Also possess the time input part, it receives the time of user's input,
The above-mentioned data portion of duplicating also carries out following operation: under the situation of obtaining above-mentioned current time failure, the above-mentioned data portion of duplicating obtains the time that is imported into above-mentioned time input part, and the time set that will get access to from above-mentioned time input part is the time when carrying out above-mentioned duplicating of duplicating.
5. according to each the described data copy device in the claim 1 to 4, it is characterized in that,
The above-mentioned data portion of duplicating also carries out following operation: under the situation of successfully obtaining the above-mentioned current time, above-mentioned data are duplicated portion above-mentioned data copy device clock internal are proofreaied and correct the time that gets access to for above-mentioned current time acquisition unit.
6. a data copy method is characterized in that, possesses following operation:
When the data as duplicate object of being preserved in first storage part copy to second storage part different with above-mentioned first storage part,, it is the time when carrying out above-mentioned duplicating of duplicating with the above-mentioned time set that gets access to from outside acquisition time.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010027361A JP2011164962A (en) | 2010-02-10 | 2010-02-10 | Device and method for data duplication |
| JP2010-027361 | 2010-11-15 |
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| CN102147638A true CN102147638A (en) | 2011-08-10 |
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| CN2011100347437A Pending CN102147638A (en) | 2010-02-10 | 2011-01-31 | Data copy device and data copy method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102739446A (en) * | 2012-06-27 | 2012-10-17 | 中兴通讯股份有限公司 | Method and device for selecting network time protocol (NTP) servers |
| CN106452648A (en) * | 2014-06-26 | 2017-02-22 | 青岛海信移动通信技术股份有限公司 | Time synchronization method and communication terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106993028A (en) * | 2017-03-20 | 2017-07-28 | 山东浪潮商用系统有限公司 | Network time acquisition methods, apparatus and system, computer-readable recording medium and storage control |
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| Publication number | Publication date |
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| JP2011164962A (en) | 2011-08-25 |
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Application publication date: 20110810 |