CN104023246A - Private video data cloud-storage system and method - Google Patents
Private video data cloud-storage system and method Download PDFInfo
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Abstract
The invention discloses a private video data cloud-storage system and method. The system comprises one or more storage regions, each storage area comprises at least one managing server set and at least two memories, different managing server sets are independent from each other, the managing server sets within the same storage area share the storage space of the memories in the storage area, and each managing server set includes one or more managing servers. The managing servers are used for receiving a video data storage instruction of an application server, storing metadata of video data, determining the memory for storing the video data, and sending the address of the determined memory to the application server so that the application server stores the video data in the determined memory. According to technical scheme provided by the invention, the handling capacity and expansion performance of the storage system are effectively improved.
Description
Technical field
The present invention relates to Video Data Storage field, be specifically related to the privately owned cloud storage means of the privately owned cloud storage system of a kind of video data and video data.
Background technology
Along with the development of security protection industry high-definition video technology, video intelligent analytical technology and cloud computing, the storage demand of magnanimity monitor video data becomes particularly urgent.
There is at present a kind of IP-SAN storage system, IP-SAN is by iso-ip Internetworking protocol ISO-IP (IP, Internet Protocol) realize storage area network (SAN, Storage Area Network), in IP-SAN storage system, conventionally comprise the disk that can expand capacity, data store in this disk by IP network, and existing IP-SAN storage system exists following limitation:
The first, in the time that needs are expanded disk size, new disk need to be configured in original disk, and data access from new disk all needs through original disk, and this makes IP-SAN storage system handling capacity limited;
Second, IP-SAN storage system capacity depends on can expand the largest extension capacity that the disk of capacity is supported, illustrate, suppose to expand maximum 1000 Jis (being G) of supporting of disk of capacity, so, IP-SAN storage system capacity based on this disk at most also can only expand to 1000G, visible, and existing IP-SAN storage system is not supported unlimited dilatation.
Summary of the invention
The invention provides the privately owned cloud storage means of the privately owned cloud storage system of a kind of video data and video data, for improving handling capacity and the dilatation performance of storage system.
First aspect present invention provides a kind of video data privately owned cloud storage system, comprising:
One or more storage area, wherein, each storage area comprises at least one management server group and at least two memory devices, separate between different management server groups, management server group in each storage area is shared the memory space of all memory devices in this storage area, and each management server group comprises one or more management server;
Wherein, above-mentioned management server is used for: receive the Video Data Storage instruction of application server, wherein, above-mentioned Video Data Storage instruction comprises the metadata of the video data of needs storage; Store the metadata of above-mentioned video data; The storage area of determining above-mentioned management server place is interior for storing the memory device of above-mentioned video data; The address of above-mentioned memory device of determining is sent to above-mentioned application server so that above-mentioned application server is according to the address of above-mentioned memory device, by above-mentioned Video Data Storage in above-mentioned memory device.
Second aspect present invention provides a kind of video data privately owned cloud storage means, be applied to the privately owned cloud storage system of video data, wherein, the privately owned cloud storage system of above-mentioned video data comprises: one or more storage area, wherein, each storage area comprises at least one management server group and at least two memory devices, separate between different management server groups, management server group in each storage area is shared the memory space of all memory devices in this storage area, and each management server group comprises one or more management server;
The privately owned cloud storage means of above-mentioned video data comprises:
Above-mentioned management server receives the Video Data Storage instruction of application server, and wherein, above-mentioned Video Data Storage instruction comprises the metadata of the video data of needs storage;
The metadata of the above-mentioned video data of above-mentioned management server stores;
Above-mentioned management server determines that the storage area at above-mentioned management server place is interior for storing the memory device of above-mentioned video data;
Above-mentioned management server is set up the metadata of above-mentioned video data and for storing the mapping relations between the memory device of above-mentioned video data;
The address of above-mentioned memory device of determining is sent to above-mentioned application server by above-mentioned management server so that above-mentioned application server is according to the address of above-mentioned memory device, by above-mentioned Video Data Storage in above-mentioned memory device.
From technique scheme of the present invention, the privately owned cloud storage system of video data of the present invention comprises one or more storage area, each storage area comprises at least two management servers and at least two memory devices, separate between each management server, and the arbitrary management server in each storage area is shared the memory space of all memory devices in this storage area, in the time that application server needs stored video data, by the metadata of management server stores video data, and be identified for storing the memory device of this video data, the address of definite memory device is sent to this application server, by application server by Video Data Storage in this memory device, on the one hand, in the present invention, data link does not need through management server, application server communicates with corresponding memory device according to the definite memory device of management server, realize the horizontal extension of region memory storage equipment concurrency performance, improve the handling capacity of storage system, on the other hand, in the present invention, pass through to increase the quantity of the memory device in storage area, just can realize the dilatation to this storage area internal storage capacity, and, in the present invention to storage area, the quantity of management server and memory device does not all limit, therefore, can realize the unlimited dilatation of the privately owned cloud storage system of video data, greatly improve the dilatation performance of storage system.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is example structure schematic diagram of the privately owned cloud storage system of a kind of video data provided by the invention;
Fig. 2 is the privately owned cloud storage system application scenarios of a kind of video data provided by the invention schematic diagram;
Fig. 3-a is embodiment schematic flow sheet of the privately owned cloud storage means of a kind of video data provided by the invention;
Fig. 3-b is another embodiment schematic flow sheet of the privately owned cloud storage means of a kind of video data provided by the invention.
Embodiment
For making goal of the invention of the present invention, feature, advantage can be more obvious and understandable, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, but not whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Below the privately owned cloud storage system of a kind of video data in the embodiment of the present invention is described, refers to Fig. 1, the privately owned cloud storage system of video data in the embodiment of the present invention comprises:
One or more storage area 10, wherein, each storage area 10 comprises at least one management server group 101 and at least two memory devices 102, separate between different management server groups, management server group 101 in each storage area is shared the memory space of all memory devices 1012 in this storage area, and each management server group 101 comprises one or more management server 1011;
Wherein, management server 1011 for: receive application server (server of for example recording a video, video analytics server, video frequency searching server etc.) Video Data Storage instruction, wherein, above-mentioned Video Data Storage instruction comprises the metadata of the video data of needs storage; Store the metadata of above-mentioned video data; The storage area of determining management server 1011 places is interior for storing the memory device 102 of above-mentioned video data; The address of definite memory device 102 is sent to above-mentioned application server so that above-mentioned application server is according to the address of above-mentioned definite memory device 102, by above-mentioned Video Data Storage in above-mentioned memory device 102.
Optionally, management server 1011 specifically for: the current management server 1011 place the lightest memory devices of storage area internal burden are defined as to the memory device 102 for storing above-mentioned video data, certainly, management server 1011 also can be identified for storing by alternate manner the memory device 102 of above-mentioned video data, for example, management server 1011 can be according to the metadata of this video data and default load balancing, select suitable memory device 102 in management server 1011 place storage areas, the memory device of selection 102 is defined as to the memory device 102 for storing above-mentioned video data, be not construed as limiting herein.
Optionally, management server 1011 also for: receive the video data reading command of application server, wherein, above-mentioned video data reading command comprises the metadata of the video data that need to read; Mapping relations between the metadata of the video data reading according to above-mentioned needs and memory device 102, the memory device 102 corresponding to metadata of definite video data reading with above-mentioned needs; The address of definite memory device 102 is sent to above-mentioned application server, so that this application server, according to the address of this memory device 102, reads the video data that above-mentioned needs read from this memory device 102.
It should be noted that, the metadata of above-mentioned video data is the attribute (filename of for example this video data, the size of this video data etc.) for describing this video data.
Optionally, the embodiment of the present invention provides long-distance disaster mechanism,, management server 1011 is also for the metadata of video data of storage on archive management server 1011 on remote side administration server, while breaking down with all management servers 1011 in the management server group 101 at convenient management server 1011 places simultaneously, can recover the data (metadata of for example video data) in this management server group 101 by said distal ends management server, thereby further improve the Information Security of this management server group 101.
Optionally, in the embodiment of the present invention, each management server group comprises two management servers, the metadata synchronization of the video data of storing in two management servers in each management server group, and in each management server group, provide the mechanism of two-node cluster hot backup,, for example, for example, in the time that a management server in management server group breaks down (equipment fault or network failure) or safeguards (upgrading), the work of the management server of another management server taking over fault in this management server group.Concrete, the implementation of above-mentioned two-node cluster hot backup mechanism can be as follows:
If a management server in 1 management server group is abnormal, system can automatically switch to the other management server in this management server group.In the mutual process of application server and management server, if find management server fault, the application server other management server in this management server group that can certainly be dynamically connected.
2, in management server group, change a new management server, the system configuration of new management server is the same with the management server of fault, if an other management server of this management server group is normally worked, can be from the metadata of an other management server synchronizing video data of this management server group of trend after powering on.If an other management server of this management server group is also abnormal, if there is remote side administration server, after powering on from the metadata of this remote side administration server sync video data of trend.
Further, the embodiment of the present invention also provides memory device the abnormal mechanism of changing, and implementation is as follows:
If 1 certain memory device is abnormal, and be to carry out read-write business by this memory device to cause extremely, the read-write that application server is taken over video data to the new memory device of management server application again, guarantees that outward service does not interrupt.
If it is abnormal that 2 memory device loom faults cause, change a new memory device, and all hard disks on the memory device of fault are pulled out on new memory device, and guarantee that the system configuration of new memory device is the same with the memory device of fault, memory device after changing after powering on can add system automatically, and storage service is provided, the data of storage can not be lost in the past simultaneously.
If the hard disk failure on 3 memory devices, only need to change the hard disk on memory device.
Optionally, the embodiment of the present invention also provides 5 DBMS level of securitys, the backup of memory device supports node level data redundancy and hard disk level RAID5 storage policy in the embodiment of the present invention, wherein, the backup of node level data redundancy has 1 (being single hard disk), 1+1 (i.e. two hard disks), 1+1+1 (i.e. three hard disks), RAID5 storage policy is supported HotSpare disk, and the quantity of HotSpare disk can be configured according to actual conditions.By the backup of node level data redundancy and hard disk level RAID5 combination, 5 DBMS level of securitys of formation, level of security is as follows successively from low to high: RAID5,1+1,1+1+RAID5,1+1+1,1+1+1+RAID5.
It should be noted that, in the embodiment of the present invention, can carry out according to the actual requirements distributed deployment, privately owned video data cloud storage system is divided into multiple storage areas, each storage area is managed server and multiple memory device collaborative work by multi units tube, and Video Data Storage function is externally provided jointly.
In the embodiment of the present invention, the metadata of the memory space that each management server preservation place storage area is managed by it, and externally provide independent NameSpace for this management server of application server access.Memory device is for storing the video data in this storage area, simultaneously again by the server admin of the multi units tube of this storage area reason.Optionally, the privately owned cloud storage system of whole video data shares a set of webmastering software, and it provides configuration to the privately owned cloud storage system of video data and the monitoring of equipment state.
Optionally, every group management sever of the each storage area in the privately owned cloud storage system of video data and all memory devices of this storage area externally invent a storage pool, for application server, by interface, (for example portable operating system interface (POSIX, Portable Operating System Interface) is accessed.
It should be noted that, the privately owned cloud storage system of video data in the embodiment of the present invention does not limit storage area quantity, can realize the object of the unlimited dilatation of memory capacity, for example, just can reach the dilatation of the memory capacity to single storage area by increasing the quantity of storage area internal memory devices, owing to increasing the quantity of the memory device in storage area, may cause the metadata insufficient space of the video data that in this storage area, original management server is deposited, therefore, can avoid by increasing one or more management server groups at this storage area.During dilatation, do not affect the operation of original storage service with upper type, realized seamless dilatation.
Optionally, the management server in the embodiment of the present invention and memory device are the industrial computer that adopts the X86-based that Centos operating system is installed.
Be illustrated in figure 2 the privately owned cloud storage system scene of a kind of video data schematic diagram that the embodiment of the present invention provides, as seen from Figure 2, the privately owned cloud storage system of video data comprises N storage area, be respectively storage area 1～storage area N, each storage area comprises n management server group, be respectively management server group 1～management server group n, each management server group comprises two management servers, each storage area is separate, each management server group is separate, management server in each storage area by switch with all memory devices in storage area (as memory device 1 to the memory device in the each storage area in Fig. 2 m) is connected, share the memory space of all memory devices in this storage area.Application server (video recording server as shown in Figure 2, video analytics server, video frequency searching server, other application server) is connected by the privately owned cloud storage system of video dedicated network and video data with NM client, each management server externally provides independent NameSpace, so that application server is according to NameSpace access management server.
It should be noted that, the privately owned cloud storage system scene of video data shown in Fig. 2 schematic diagram is a kind of example, in actual applications, the privately owned cloud storage system scene of video data schematic diagram can with Fig. 2 difference to some extent, for example, in the application scenarios of the privately owned cloud storage system of video data, can further include far-end server, far-end server is used for the metadata of the video data of storing on archive management server, while breaking down with all management servers in certain management server group of box lunch simultaneously, can recover by said distal ends management server the metadata of the video data of this management server group, thereby further improve the Information Security of this management server group 101.Again for example, the switch in the privately owned cloud storage system scene of the video data shown in Fig. 2 schematic diagram may be also other equipment with function of exchange, not right in the embodiment of the present invention, and the concrete application scenarios of the privately owned cloud storage system of video data limits.
Therefore, the privately owned cloud storage system of video data of the present invention comprises one or more storage area, each storage area comprises at least two management servers and at least two memory devices, separate between each management server, and the arbitrary management server in each storage area is shared the memory space of all memory devices in this storage area, in the time that application server needs stored video data, by the metadata of management server stores video data, and be identified for storing the memory device of this video data, the address of definite memory device is sent to this application server, by application server by Video Data Storage in this memory device, on the one hand, in the present invention, data link does not need through management server, application server communicates with corresponding memory device according to the definite memory device of management server, realize the horizontal extension of region memory storage equipment concurrency performance, improve the handling capacity of storage system, on the other hand, in the present invention, pass through to increase the quantity of the memory device in storage area, just can realize the dilatation to this storage area internal storage capacity, and, in the present invention to storage area, the quantity of management server and memory device does not all limit, therefore, can realize the unlimited dilatation of the privately owned cloud storage system of video data, greatly improve the dilatation performance of storage system.
The embodiment of the present invention also provides a kind of video data privately owned cloud storage means, be applied to the privately owned cloud storage system of video data, the privately owned cloud storage system of above-mentioned video data comprises: one or more storage area, wherein, each storage area comprises at least one management server group and at least two memory devices, separate between different management server groups, management server group in each storage area is shared the memory space of all memory devices in this storage area, each management server group comprises one or more management server, as shown in Fig. 3-a, the privately owned cloud storage means of video data in the embodiment of the present invention comprises:
301, management server receives the Video Data Storage instruction of application server;
Wherein, above-mentioned Video Data Storage instruction comprises the metadata of the video data of needs storage.
In the embodiment of the present invention, the metadata of video data is the attribute (filename of for example this video data, the size of this video data etc.) for describing this video data.
Above-mentioned application server can be for example video recording server, video analytics server, video frequency searching server etc., is not construed as limiting herein.
302, the metadata of the above-mentioned video data of management server stores.
303, management server determines that the storage area at above-mentioned management server place is interior for storing the memory device of above-mentioned video data;
Optionally, the lightest memory device of current management server place storage area internal burden is defined as the memory device for storing above-mentioned video data by management server, certainly, management server also can be identified for storing by alternate manner the memory device of above-mentioned video data, for example, management server can be according to the metadata of this video data and default load balancing, select suitable memory device in the storage area of management server place, the memory device of selection is defined as to the memory device for storing above-mentioned video data, be not construed as limiting herein.
304, management server is set up the metadata of above-mentioned video data and for storing the mapping relations between the memory device of above-mentioned video data;
Optionally, management server is set up the metadata of above-mentioned video data and for example, for storing the mapping table between the address (IP address) of memory device of above-mentioned video data, to set up the metadata of above-mentioned video data and for storing the mapping relations between the memory device of above-mentioned video data, or, management server is set up the metadata of above-mentioned video data and for storing the mapping table between the device identification of memory device of above-mentioned video data, to set up the metadata of above-mentioned video data and for storing the mapping relations between the memory device of above-mentioned video data.
305, the address of above-mentioned memory device of determining is sent to above-mentioned application server by management server so that above-mentioned application server is according to the address of above-mentioned memory device, by above-mentioned Video Data Storage in above-mentioned memory device.
Optionally, as shown in Fig. 3-b, the privately owned cloud storage means of video data in the embodiment of the present invention also comprises step 401 and step 402:
If 401 management servers receive the video data reading command of application server, mapping relations between metadata and the memory device of the video data reading according to above-mentioned needs, the memory device corresponding to metadata of definite video data reading with above-mentioned needs;
Wherein, above-mentioned video data reading command comprises the metadata of the video data that need to read.
402, the address of the above-mentioned memory device of determining is sent to above-mentioned application server by management server, so that above-mentioned application server, according to the address of above-mentioned memory device, reads the video data that above-mentioned needs read from above-mentioned memory device.
Alternatively, on the basis of Fig. 3-a or Fig. 3-b illustrated embodiment, each management server group comprises two management servers, the metadata synchronization of the video data of storing in two management servers in above-mentioned management server group, the privately owned cloud storage means of video data in the embodiment of the present invention also comprises: in the time that a management server in above-mentioned management server group breaks down or safeguards, and the work that another management server in above-mentioned management server group is taken over the management server of above-mentioned fault.
The privately owned cloud storage means of video data in the optional embodiment of the present invention also comprises: management server backs up the metadata of the video data of storing on above-mentioned management server on remote side administration server, while breaking down with all management servers in the management server group at convenient management server place simultaneously, can recover the data (metadata of for example video data) in this management server group by said distal ends management server, thereby further improve the Information Security of this management server group.
Optionally, the management server in the embodiment of the present invention and memory device are the industrial computer that adopts the X86-based that Centos operating system is installed.
It should be noted that, the privately owned cloud storage system of video data in the embodiment of the present invention can be as the video data in said apparatus embodiment privately owned cloud storage system, can be for realizing the whole technical schemes in said apparatus embodiment, its specific implementation process can, with reference to the associated description in said apparatus embodiment, repeat no more herein.
From technique scheme of the present invention, the privately owned cloud storage system of video data of the present invention comprises one or more storage area, each storage area comprises at least two management servers and at least two memory devices, separate between each management server, and the arbitrary management server in each storage area is shared the memory space of all memory devices in this storage area, in the time that application server needs stored video data, by the metadata of management server stores video data, and be identified for storing the memory device of this video data, the address of definite memory device is sent to this application server, by application server by Video Data Storage in this memory device, on the one hand, in the present invention, data link does not need through management server, application server communicates with corresponding memory device according to the definite memory device of management server, realize the horizontal extension of region memory storage equipment concurrency performance, improve the handling capacity of storage system, on the other hand, in the present invention, pass through to increase the quantity of the memory device in storage area, just can realize the dilatation to this storage area internal storage capacity, and, in the present invention to storage area, the quantity of management server and memory device does not all limit, therefore, can realize the unlimited dilatation of the privately owned cloud storage system of video data, greatly improve the dilatation performance of storage system.
In the several embodiment that provide in the application, should be understood that disclosed 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.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, indirect coupling or the communication connection of device or unit can be electrically, machinery or other form.
It should be noted that, for aforesaid each embodiment of the method, for easy description, therefore it is all expressed as to a series of combination of actions, but those skilled in the art should know, the present invention is not subject to the restriction of described sequence of movement, because according to the present invention, some step can adopt other order or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in specification all belongs to preferred embodiment, and related action and module might not be all that the present invention is necessary.
In the above-described embodiments, the description of each embodiment is all emphasized particularly on different fields, in certain embodiment, there is no the part of detailed description, can be referring to the associated description of other embodiment.
Description to the privately owned cloud storage system of a kind of video data provided by the present invention and the privately owned cloud storage means of video data above, for one of ordinary skill in the art, according to the thought of the embodiment of the present invention, all will change in specific embodiments and applications, to sum up, this description should not be construed as limitation of the present invention.
Claims (10)
1. the privately owned cloud storage system of video data, is characterized in that, comprising:
One or more storage area, wherein, each storage area comprises at least one management server group and at least two memory devices, separate between different management server groups, management server group in each storage area is shared the memory space of all memory devices in this storage area, and each management server group comprises one or more management server;
Wherein, described management server is used for: receive the Video Data Storage instruction of application server, wherein, described Video Data Storage instruction comprises the metadata of the video data of needs storage; Store the metadata of described video data; The storage area of determining described management server place is interior for storing the memory device of described video data; The address of described memory device of determining is sent to described application server so that described application server is according to the address of described memory device, by described Video Data Storage in described memory device.
2. system according to claim 1, is characterized in that,
Described management server also for: receive the video data reading command of application server, wherein, described video data reading command comprises the metadata of the video data that need to read; Mapping relations between metadata and the memory device of the video data reading according to described needs, the memory device corresponding to metadata of definite video data reading with described needs; The address of the described memory device of determining is sent to described application server, so that described application server, according to the address of described memory device, reads the video data that described needs read from described memory device.
3. system according to claim 1 and 2, is characterized in that, described management server specifically for: the lightest memory device of current described management server place storage area internal burden is defined as to the memory device for storing described video data.
4. system according to claim 1 and 2, it is characterized in that, each management server group comprises two management servers, the metadata synchronization of the video data of storing in two management servers in described management server group, and in the time that a management server in described management server group breaks down or safeguards, the work that another management server in described management server group is taken over the management server of described fault.
5. system according to claim 1 and 2, is characterized in that,
Described management server is also for the metadata that backs up the video data of storing on described management server on remote side administration server.
6. the privately owned cloud storage means of video data, be applied to the privately owned cloud storage system of video data, it is characterized in that, the privately owned cloud storage system of described video data comprises: one or more storage area, wherein, each storage area comprises at least one management server group and at least two memory devices, separate between different management server groups, management server group in each storage area is shared the memory space of all memory devices in this storage area, and each management server group comprises one or more management server;
The privately owned cloud storage means of described video data comprises:
Described management server receives the Video Data Storage instruction of application server, and wherein, described Video Data Storage instruction comprises the metadata of the video data of needs storage;
The metadata of video data described in described management server stores;
Described management server determines that the storage area at described management server place is interior for storing the memory device of described video data;
Described management server is set up the metadata of described video data and for storing the mapping relations between the memory device of described video data;
The address of described memory device of determining is sent to described application server by described management server so that described application server is according to the address of described memory device, by described Video Data Storage in described memory device.
7. method according to claim 6, is characterized in that, described method also comprises:
If described management server receives the video data reading command of application server, mapping relations between metadata and the memory device of the video data reading according to described needs, determine the memory device corresponding to metadata of the video data reading with described needs, wherein, described video data reading command comprises the metadata of the video data that need to read;
The address of the described memory device of determining is sent to described application server by described management server, so that described application server, according to the address of described memory device, reads the video data that described needs read from described memory device.
8. according to the method described in claim 6 or 7, it is characterized in that, in the described storage area of determining described management server place, for storing the memory device of described video data, be specially:
The lightest memory device of current described management server place storage area internal burden is defined as to the memory device for storing described video data.
9. according to the method described in claim 6 or 7, it is characterized in that, each management server group comprises two management servers, the metadata synchronization of the video data of storing in two management servers in described management server group, and described method also comprises:
In the time that a management server in described management server group breaks down or safeguards, the work that another management server in described management server group is taken over the management server of described fault.
10. according to the method described in claim 6 or 7, it is characterized in that, described method also comprises:
Described management server backs up the metadata of the video data of storing on described management server on remote side administration server.
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| CN106060173A (en) * | 2016-07-22 | 2016-10-26 | 恒业智能信息技术（深圳）有限公司 | Cluster type photographing data storage system based on cloud storage |
| WO2016169308A1 (en) * | 2015-04-21 | 2016-10-27 | 杭州海康威视数字技术股份有限公司 | Method and system for cloud-based storage of video, and method and system for previewing cloud-stored video |
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