CN102006506A - Video server as well as hierarchical storage management method and device of same - Google Patents
Video server as well as hierarchical storage management method and device of same Download PDFInfo
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Abstract
The invention discloses a hierarchical storage management method of a video server. The method comprises the following steps of: confirming the VOD (Video-On-Demand) welcome degrees of various video contents on the video server according to the VOD (Video-On-Demand) numbers of the video contents; and storing the video contents with high VOD welcome degrees in an internal memory and storing video contents with medium and low VOD welcome degrees in an external memory. The embodiment of the invention also provides the video server and a hierarchical storage management device of the same, can be adopted to improve the plug-flow capacity of the video server, satisfy the daily increasing demands of video contents and a subscriber scale, prolong the service life of the video serve and protect the CAPEX (Capital Expenditure) and the OPEX (Operating Expenditure) of operators.
Description
Technical field
The present invention relates to technical field of data storage, particularly relate to a kind of hierarchical storage management method of video server and device, video server.
Background technology
Along with the affirmation of country to telecommunications network, broadcasting and television network, the Internet integration of three networks overall plan, the real meaning of the integration of three networks not merely is the physics unification that rests on telecommunications network, the Internet and cable television network three macroreticulars, and its core is with the various high-level business of existing and following continuous release and the fusion of application.VOD service attracts the increasing concern of each operator as one of main business of the integration of three networks.IPTV (IPTV, Interactive Personality TV) and interactive TV solution supplier also drop into sizable resource in the exploitation and planning of video server.
Meanwhile along with China's Digital Television and IPTV user's continuous increase, the progress of the integration of three networks is constantly accelerated, number of users rapidly increases, the content of Digital Television almost increases with every year 20% even more speed simultaneously, how to satisfy the demand that increases rapidly of growing user and video content, become the significant challenge of video server.
The content stores of video server mainly is main flow with the disk storage at present.The technical development of disk storage also relatively rapidly, its main type comprises: system for serial small computer interface (SAS, Serial Attached Small Computer System Interface), fiber channel (FC, Fabre Channel), Serial Advanced Technology Attachment (SATA, Serial Advanced Technology Attachment) is three kinds.The characteristics of SATA disk are that capacity is very big, but the readwrite performance of disk is lower, and stability and reliability are also lower simultaneously.The characteristics of FC and SAS disk are that the relative SATA with reliability of readwrite performance is higher, but capacity is less relatively.
But the read-write operation of disk has mechanical movement, so not only also there is certain limitation in the life-span of disk than weak point but also its readwrite performance relatively.The difficulty that causes disposing later maintenance and management thus is very big.Simultaneously, advance under the integration of three networks background in country, under the situation that the interactive userbase of telecommunications IPTV and broadcasting and TV increases rapidly, adopt the video server of disk storage mode, be difficult to promote the plug-flow ability of separate unit video server, user's demand be can only satisfy in the mode of extending video server, management, upgrading, O﹠M cost height made.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of hierarchical storage management method of video server and device, video server, can improve the plug-flow ability of video server, satisfy IPTV and broadcasting and TV interactive television system video content and the growing demand of userbase under the integration of three networks, can promote the useful life of video server simultaneously.
For achieving the above object, the invention provides following scheme: a kind of hierarchical storage management method of video server, described method comprises:
Determine the program request temperature of each video content according to the video-on-demand times of each video content on the video server;
The video content that the program request temperature is high leaves in the internal storage, and the video content that the program request temperature is moderate and low leaves in the external memory storage.
Preferably, before the video-on-demand times of each video content was determined the program request temperature of each video content on according to video server, described method also comprised: the video-on-demand times of each video content on the statistics video server.
Preferably, described video-on-demand times according to each video content on the video server determines that the program request temperature of each video content comprises:
Determine program request temperature height, moderate and low corresponding threshold respectively;
The video-on-demand times of each video content is compared with each threshold value respectively, determine the program request temperature of each video content.
Preferably, leave in the internal storage at the video content that the program request temperature is high, after the video content that the program request temperature is moderate and low left in the external memory storage, described method also comprised: the program request temperature to each video content is upgraded.
Preferably, after described program request temperature to each video content was upgraded, described method also comprised: the video content that the program request temperature changes after will upgrading is automatically migrated in the memory device of the program request temperature correspondence after the renewal.
Preferably, described external memory storage is flash memory and disk; The video content that the program request temperature is moderate leaves in the flash memory, and the lower grade video content of program request is left in the disk.
The present invention also provides a kind of hierarchical storage management device of video server, and described device comprises:
The temperature determining unit is used for determining according to the video-on-demand times of each video content on the video server program request temperature of each video content;
Memory cell is used for the video content that the program request temperature is high and leaves internal storage in, and the video content that the program request temperature is moderate and low leaves in the external memory storage.
Preferably, described device also comprises: statistic unit is used to add up the video-on-demand times of each video content on the video server.
Preferably, described temperature determining unit comprises:
Threshold value is determined subelement, is used for determining program request temperature height, moderate and low corresponding threshold respectively;
Relatively subelement is used for the video-on-demand times of each video content is compared with each threshold value respectively, determines the program request temperature of each video content.
Preferably, described device also comprises: updating block is used for the program request temperature of each video content is upgraded.
Preferably, described device also comprises: the Autonomic Migration Framework unit is used for and will upgrades the memory device that video content that program request temperature in back changes is automatically migrated to the program request temperature correspondence after the renewal.
The present invention also provides a kind of video server, and described server comprises: memory device and hierarchical storage management device; Described memory device comprises internal storage and external memory storage;
Described hierarchical storage management device comprises:
The temperature determining unit is used for determining according to the video-on-demand times of each video content on the video server program request temperature of each video content;
Memory cell is used for the video content that the program request temperature is high and leaves internal storage in, and the video content that the program request temperature is moderate and low leaves in the external memory storage.
Preferably, described hierarchical storage management device also comprises: updating block is used for the program request temperature of each video content is upgraded.
Preferably, described hierarchical storage management device also comprises: the Autonomic Migration Framework unit is used for and will upgrades the memory device that video content that program request temperature in back changes is automatically migrated to the program request temperature correspondence after the renewal
According to specific embodiment provided by the invention, the invention discloses following technique effect:
In the embodiment of the invention, video content on the video server is carried out the program request temperature according to video-on-demand times to be divided, then that the program request temperature is high video content leaves on the internal storage, the read or write speed and the stability that need with the high program request rate of the video content that guarantees hot programs, the video content that the program request temperature is moderate and low leaves on the external memory storage, so that can conserve memory cost, reduction operation and the expense of safeguarding.Adopt the embodiment of the invention not only can improve the plug-flow ability of video server, satisfy the growing demand of video content and userbase, also can prolong the useful life of video server simultaneously, the investment of protection operator.
Description of drawings
Fig. 1 is the hierarchical storage management method flow diagram of the video server of the embodiment of the invention one;
Fig. 2 is the hierarchical storage management method flow diagram of the video server of the embodiment of the invention two;
Fig. 3 is the hierarchical storage management structure drawing of device of the video server of the embodiment of the invention.
Embodiment
In view of this, the object of the present invention is to provide a kind of hierarchical storage management method of video server and device, video server, can improve the plug-flow ability of video server, satisfy IPTV and broadcasting and TV interactive television system video content and the growing demand of userbase under the integration of three networks, can promote the useful life of video server simultaneously.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
The memory management method of the described video server of the embodiment of the invention is based on the realization of classification storage policy.So-called classification storage policy is meant that the video content that the program request temperature is different leaves in respectively in the memory device of different read-write speed and stability.Concrete, memory device commonly used at present generally can comprise internal storage and external memory storage, this external memory storage can comprise flash memory, disk or the like.According to the characteristic of memory device as can be known, all be better than external memory storage read-write speed, stability and the useful life of internal storage.Based on this, the video content that the program request temperature is high leaves on the internal storage of readwrite performance height, long service life, the read or write speed and the stability that need with the high program request rate that guarantees the video content that the program request temperature is high, the video content that the program request temperature is moderate with low leaves that readwrite performance is relatively low in, on the useful life relative short External memory equipment, so that can conserve memory cost, reduction operation and the expense of safeguarding.
The method and apparatus that the embodiment of the invention is provided describes in detail below.
With reference to Fig. 1, be the memory management method flow chart of the video server of the embodiment of the invention one.This method can may further comprise the steps:
Step S101: the program request temperature of determining each video content according to the video-on-demand times of each video content on the video server.
The video content that is stored on the video server is carried out the division of program request temperature according to video-on-demand times, determine the program request temperature of each video content, so that the video content of different program request temperatures is adopted different memory devices.
At video server, the program request temperature of the video content that it comprises can be divided into height, moderate, low.For the high video content of program request temperature, can be set at hot programs; The video content that the program request temperature is moderate can be set at time thermal center order; The lower grade video content of program request can be set at cold program.Certainly, in actual applications, can specifically set according to actual needs the division of program request temperature.
Need to prove that the program request temperature of video content has directly embodied the degree that this video content is paid close attention to by the user.The explanation user degree of concern height that the program request temperature is high, then this video content is possibly by the frequent program request of user or at one time can be by a plurality of users program requests simultaneously, for this class video content, need provide the memory device that read or write speed is fast and the stable high life is long to it, so that can satisfy user's demand, improve user experience; And lower grade for program request, illustrate that user's degree of concern is low, may only be that user's program request is arranged once in a while, for this class video content, it can be stored on all relatively low memory device of read or write speed and stability, so that can conserve memory cost, reduction operation and the expense of safeguarding.
Preferably, before the program request temperature of described definite each video content, this method also comprises: the video-on-demand times of each video content on the statistics video server.Then, corresponding, described video-on-demand times according to each video content on the video server determines that the program request temperature of each video content specifically can comprise:
Determine program request temperature height, moderate and low corresponding threshold respectively;
The video-on-demand times of each video content is compared with each threshold value respectively, determine the program request temperature of each video content.
Illustrate, the threshold value of supposing (being with 1 hour is unit) hot programs in the setting unit interval is that video-on-demand times is more than or equal to 50 times, inferior thermal center purpose threshold value be video-on-demand times less than 50 times and be higher than 10 times, the threshold value of cold program is that video-on-demand times is smaller or equal to 10 times.
Then, be higher than 50 times video content, determine that its program request temperature is for high for video-on-demand times; Video-on-demand times is lower than 10 times video content, determines that its program request temperature is moderate; Video-on-demand times determines that its program request temperature is low between 10 times and 50 times.
Need to prove that in actual applications, the method for the video-on-demand times of each video content is many on the statistics video server, can flexible Application.Be that example describes with two kinds of concrete implementations below, the described method of the embodiment of the invention can also realize by other modes.
Implementation one: by the video-on-demand times of each video content on the cycle statistics video server.
For example, can setting cycle it be one day.Then described video-on-demand times by each video content on the cycle statistics video server is: statistics on video server within a day each video content respectively by the number of times of program request, thereby according to the video-on-demand times of each video content, for it carries out grade classification.
The benefit of statistics is by the cycle, can know clearly which video is that the active user pays special attention to.For such video content, its characteristics can for: at short notice can be by the frequent program request of a large number of users, need to guarantee that such video content have higher read or write speed and stability of stored in the certain hour section.
Implementation two: all video-on-demand times of each video content and total creation-time on the statistics video server, calculate the average video-on-demand times of each video content.
Be specially, add up each video content from be established to current time all by the total degree of program request and each video content total creation-time from set up to the current time experience, calculate the average video-on-demand times of each video content.For example: suppose video content A from set up to all video-on-demand times of current time be 546789 times, its total creation-time is 327 days, the average video-on-demand times that then can calculate this video content A is about 1672 times/day.And then, each video content is carried out grade classification according to the average video-on-demand times of each video content.
Adopt the benefit of this grade classification to be, for some video content, it belongs to the type of being paid close attention to by the user for a long time.The characteristics of the type video content can for: possible its in a certain period, high by user's video-on-demand times, but on long terms, it does not have very high program request rate; The type that also may this video content belongs to interim high program request, it is very high to be in a period of time the program request rate, and a period of time program request rate is lower, and a period of time program request rate is very high again, but its average program request rate may be very high.Therefore, for such video content, still need to have higher read or write speed and stability of stored.
Preferably, this can set measurement period, calculates the average video-on-demand times of cycle of each video content, for example average video-on-demand times or average every month video-on-demand times etc. weekly.
Certainly, in actual applications, also have a variety of methods to determine the program request temperature of video content, can specifically set according to the actual needs.For example, in the method for the invention, can also carry out rank, according to the rank order of each video content it be carried out that the program request temperature is determined etc. by video-on-demand times to each video content.In embodiments of the present invention, set forth no longer one by one.
Step S102: the video content of different program request temperatures is left in respectively in the corresponding memory device.
Concrete, the video content that the program request temperature is high leaves in the internal storage, and the video content that the program request temperature is moderate and low leaves in the external memory storage.
The memory device of the video content that the current video server mainly adopts can comprise: internal storage and external memory storage.This internal storage can abbreviate internal memory (Memory) as; External memory storage can comprise flash memory (Flash card), disk etc.From present test result, the read-write speed of Memory under video on demand techniques (VOD, Video On Demand) application model can reach 2000MB/S; The read-write speed that the Flash of 1TB is stuck under the VOD application model can reach 600MB/S; The maximum read-write speed of the disk of 1TB (is that example describes with the SATA disk) under the VOD application model is 35MB/S.This shows, on read-write speed, Memory＞Flash card＞disk.Simultaneously, going up from useful life, still is Memory＞Flash card＞disk.
Therefore, in embodiments of the present invention, according to the read-write speed of each memory device and the difference in useful life, then that the program request temperature is high video content leaves on the internal storage of read-write speed height, long service life, the read or write speed and the stability that need with the high program request rate of the video content that guarantees hot programs; The video content that the program request temperature is moderate with low leaves on the read-write speed relative short external memory storage in relatively low, useful life, so that can the conserve memory cost, and the expense that reduces operation and safeguard.
Concrete, the video content of hot programs can be the high screen content stores of program request temperature on Memory; With inferior thermal center purpose video content, be the moderate video content of program request temperature, be stored on the Flash card; With the video content of cold program, be the lower grade video content of program request, be stored on the disk.
The described memory management method of the embodiment of the invention; can guarantee that the video content that the program request temperature of very big part is high is stored on the high memory device of read or write speed; can improve the plug-flow ability of video server thus; satisfy the growing demand of video content and userbase; also can prolong simultaneously the useful life of video server; protect the capital expenditure (CAPEX of operator greatly; Capital Expenditure) and operation cost (OPEX, Operating Expense).
It should be noted that video content has life cycle.In different periods, the program request temperature of video content can change a lot.For example, possible certain video content video-on-demand times when new the establishment is very high, belongs to hot programs, it need be stored on the internal storage of readwrite performance height, long service life; But As time goes on, its video-on-demand times reduces, reduce to time thermal center order in addition with cold program, at this moment,, will cause the waste of resource if this video content is continued to be stored on the memory device of hot programs.Or possible certain video content does not cause user's concern when new the establishment, and video-on-demand times seldom is stored on the memory device of cold program correspondence; But, increasing along with the relevant propaganda strength of this video content, make this screen content cause a lot of users' concern gradually, video-on-demand times sharply rises, and exceeds the threshold value requirement of hot programs, at this moment, if this video content still is stored on the memory device of cold program, when causing this video content of a plurality of users program request simultaneously possibly,, make that user's viewing experience is very poor because of read or write speed causes video playback not smooth inadequately.
In view of the above problems, the method that provides of the embodiment of the invention two also comprises the renewal process to the video content storage.Concrete, with reference to Fig. 2, be the hierarchical storage management method flow diagram of the video server of the embodiment of the invention two.This method can may further comprise the steps:
Step S201: the program request temperature of determining each video content according to the video-on-demand times of each video content on the video server.
Step S202: the video content that the program request temperature is high leaves in the internal storage, and the video content that the program request temperature is moderate and low leaves in the external memory storage.
Wherein, step S201 and step S202 do not repeat them here with identical described in the embodiment one.Be that with the difference of embodiment one embodiment two also comprises after step S202:
Step S203: the program request temperature to each video content is upgraded.
Need to prove that described program request temperature to each video content is upgraded, be based on also that statistics to the video-on-demand times of each video content realizes.
Be specially: the video-on-demand times of each video content on the real-time statistics video server, determine the program request temperature of the current video-on-demand times correspondence of this video content, and belong to the program request temperature of current video-on-demand times correspondence and this video content originally the program request temperature and compare, when the program request temperature of current video-on-demand times correspondence with belong to the program request temperature originally when identical, keep the affiliated program request temperature of video content, do not upgrade; When the program request temperature of current video-on-demand times correspondence with belong to the program request temperature originally not simultaneously, program request temperature to this video content is upgraded, what be that program request temperature with current video-on-demand times correspondence replaces this video content belongs to the program request temperature originally as its program request temperature, and preserves.
Step S204: the video content that the program request temperature changes after will upgrading is automatically migrated in the memory device of the program request temperature correspondence after the renewal.
The video content that changes has taken place for upgrading back program request temperature, the performance that the memory device of program request temperature that this video content is present and its storage is described is no longer mated, and needs that this video content is transferred to the memory device corresponding with its present program request temperature and gets on.At this moment, the method for the invention, the video content that renewal back program request temperature can be changed be automatically migrated in the memory device of the program request temperature correspondence after the renewal.
For example, for certain video content A, suppose that it belongs to the program request temperature originally is hot programs, is stored in the internal storage device of readwrite performance height, long service life, for example among the Memory.As time goes on, the video-on-demand times of this video content A reduces gradually, and in up-to-date statistics, its video-on-demand times is lower than 50 times.Determine that through judging the current grade of this video content A should be time thermal center order, at this moment, the grade of this video content is upgraded, determine that the grade after its renewal is time thermal center order.Variation had taken place in the grade of this video content A after system discovery upgraded, and will move automatically this video content A, it was transferred on the external memory storage, for example on the Flash card.
Video content by video-on-demand times can be As time goes on the influence of various factors certain variation be taken place.Some video content may the program request temperature be got over Gao Yuegao, and some may descend day by day.In the method for the invention, variation along with the program request temperature of each video content, the position of its storage also will change automatically thereupon, so that the video content of high program request temperature can have high read or write speed and stability all the time, in other words, make high performance memory device can be used for storing the video content of high demand fully.When some video content has no longer had high program request temperature, it is transferred on lower, the comparatively cheap memory device of rank automatically, in order to avoid take the storage resources of hot programs.Thus, can greatly improve the utilance of storage resources, reduce carrying cost.
The hierarchical storage management method of the video server that the correspondence and the embodiment of the invention provide, the embodiment of the invention also provides a kind of hierarchical storage management device of video server.With reference to Fig. 3, be the hierarchical storage management structure drawing of device of the video server of the embodiment of the invention.Described device comprises:
Preferably, described device can also comprise:
At this moment, described temperature determining unit 10 comprises:
Threshold value is determined subelement 11, is used for determining program request temperature height, moderate and low corresponding threshold respectively;
Relatively subelement 12 is used for the video-on-demand times of each video content is compared with each threshold value respectively, determines the program request temperature of each video content.
In the embodiment of the invention, video content on the video server is carried out the program request temperature according to video-on-demand times to be divided, then that the program request temperature is high video content leaves on the internal storage, the read or write speed and the stability that need with the high program request rate of the video content that guarantees hot programs, the lower grade video content of program request is left on the external memory storage, so that can conserve memory cost, reduction operation and the expense of safeguarding.Adopt the embodiment of the invention not only can improve the plug-flow ability of video server, satisfy the growing demand of video content and userbase, also can prolong the useful life of video server simultaneously, the investment of protection operator.
The described hierarchical storage management device of the embodiment of the invention, can guarantee that the video content that the program request temperature of very big part is high is stored on the high memory device of read or write speed, can improve the plug-flow ability of video server thus, satisfy the growing demand of video content and userbase.
Preferably, described device can also comprise:
Updating block is used for the program request temperature of each video content is upgraded.
Need to prove that described program request temperature to each video content is upgraded, be based on also that statistics to the video-on-demand times of each video content realizes.
Preferably, described device also comprises:
The Autonomic Migration Framework unit is used for and will upgrades the memory device that video content that program request temperature in back changes is automatically migrated to the program request temperature correspondence after the renewal.
The video content that changes has taken place for upgrading back program request temperature, the performance that the memory device of program request temperature that this video content is present and its storage is described is no longer mated, and needs that this video content is transferred to the memory device corresponding with its present program request temperature and gets on.At this moment, device of the present invention, the video content that renewal back program request temperature can be changed be automatically migrated in the memory device of the program request temperature correspondence after the renewal.
The embodiment of the invention also provides a kind of video server, and described server comprises: the memory device and the hierarchical storage management device that are used for store video content.Described memory device comprises internal storage and external memory storage.
Described hierarchical storage management device comprises:
The temperature determining unit is used for determining according to the video-on-demand times of each video content on the video server program request temperature of each video content;
Memory cell is used for the video content that the program request temperature is high and leaves internal storage in, and the video content that the program request temperature is moderate and low leaves in the external memory storage.
Preferably, described hierarchical storage management device can also comprise:
Statistic unit is used to add up the video-on-demand times of each video content on the video server.
At this moment, described temperature determining unit comprises:
Threshold value is determined subelement, is used for determining program request temperature height, moderate and low corresponding threshold respectively;
Relatively subelement is used for the video-on-demand times of each video content is compared with each threshold value respectively, determines the program request temperature of each video content.
In the embodiment of the invention, video content on the video server is carried out the program request temperature according to video-on-demand times to be divided, then that the program request temperature is high video content leaves on the internal storage, the read or write speed and the stability that need with the high program request rate of the video content that guarantees hot programs, the lower grade video content of program request is left on the external memory storage, so that can conserve memory cost, reduction operation and the expense of safeguarding.Adopt the embodiment of the invention not only can improve the plug-flow ability of video server, satisfy the growing demand of video content and userbase, also can prolong the useful life of video server simultaneously, the investment of protection operator.
The described video server of the embodiment of the invention, can guarantee that the video content that the program request temperature of very big part is high is stored on the high memory device of read or write speed, can improve the plug-flow ability of video server thus, satisfy the growing demand of video content and userbase.
Preferably, described hierarchical storage management device can also comprise:
Updating block is used for the program request temperature of each video content is upgraded.
Need to prove that described program request temperature to each video content is upgraded, be based on also that statistics to the video-on-demand times of each video content realizes.
Preferably, described hierarchical storage management device also comprises:
The Autonomic Migration Framework unit is used for and will upgrades the memory device that video content that program request temperature in back changes is automatically migrated to the program request temperature correspondence after the renewal.
The video content that changes has taken place for upgrading back program request temperature, the performance that the memory device of program request temperature that this video content is present and its storage is described is no longer mated, and needs that this video content is transferred to the memory device corresponding with its present program request temperature and gets on.At this moment, video server of the present invention, the video content that renewal back program request temperature can be changed be automatically migrated in the memory device of the program request temperature correspondence after the renewal.
More than to the hierarchical storage management method of a kind of video server provided by the present invention and device, video server, be described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, part in specific embodiments and applications all can change.In sum, this description should not be construed as limitation of the present invention.
Claims (14)
1. the hierarchical storage management method of a video server is characterized in that, described method comprises:
Determine the program request temperature of each video content according to the video-on-demand times of each video content on the video server;
The video content that the program request temperature is high leaves in the internal storage, and the video content that the program request temperature is moderate and low leaves in the external memory storage.
2. method according to claim 1 is characterized in that, before the video-on-demand times of each video content was determined the program request temperature of each video content on according to video server, described method also comprised:
The video-on-demand times of each video content on the statistics video server.
3. method according to claim 2 is characterized in that, described video-on-demand times according to each video content on the video server determines that the program request temperature of each video content comprises:
Determine program request temperature height, moderate and low corresponding threshold respectively;
The video-on-demand times of each video content is compared with each threshold value respectively, determine the program request temperature of each video content.
4. according to each described method of claim 1 to 3, it is characterized in that, leave in the internal storage that after the video content that the program request temperature is moderate and low left in the external memory storage, described method also comprised at the video content that the program request temperature is high:
Program request temperature to each video content is upgraded.
5. method according to claim 4 is characterized in that, after described program request temperature to each video content was upgraded, described method also comprised:
To upgrade in the memory device that video content that program request temperature in back changes is automatically migrated to the program request temperature correspondence after the renewal.
6. according to each described method of claim 1 to 3, it is characterized in that described external memory storage is flash memory and disk;
The video content that the program request temperature is moderate leaves in the flash memory, and the lower grade video content of program request is left in the disk.
7. the hierarchical storage management device of a video server is characterized in that, described device comprises:
The temperature determining unit is used for determining according to the video-on-demand times of each video content on the video server program request temperature of each video content;
Memory cell is used for the video content that the program request temperature is high and leaves internal storage in, and the video content that the program request temperature is moderate and low leaves in the external memory storage.
8. the hierarchical storage management device of video server according to claim 7 is characterized in that, described device also comprises:
Statistic unit is used to add up the video-on-demand times of each video content on the video server.
9. the hierarchical storage management device of video server according to claim 8 is characterized in that, described temperature determining unit comprises:
Threshold value is determined subelement, is used for determining program request temperature height, moderate and low corresponding threshold respectively;
Relatively subelement is used for the video-on-demand times of each video content is compared with each threshold value respectively, determines the program request temperature of each video content.
10. according to the hierarchical storage management device of each described video server of claim 7 to 9, it is characterized in that described device also comprises:
Updating block is used for the program request temperature of each video content is upgraded.
11. the hierarchical storage management device of video server according to claim 10 is characterized in that, described device also comprises:
The Autonomic Migration Framework unit is used for and will upgrades the memory device that video content that program request temperature in back changes is automatically migrated to the program request temperature correspondence after the renewal.
12. a video server is characterized in that, described server comprises: memory device and hierarchical storage management device; Described memory device comprises internal storage and external memory storage;
Described hierarchical storage management device comprises:
The temperature determining unit is used for determining according to the video-on-demand times of each video content on the video server program request temperature of each video content;
Memory cell is used for the video content that the program request temperature is high and leaves internal storage in, and the video content that the program request temperature is moderate and low leaves in the external memory storage.
13. video server according to claim 12 is characterized in that, described hierarchical storage management device also comprises:
Updating block is used for the program request temperature of each video content is upgraded.
14. video server according to claim 13 is characterized in that, described hierarchical storage management device also comprises:
The Autonomic Migration Framework unit is used for and will upgrades the memory device that video content that program request temperature in back changes is automatically migrated to the program request temperature correspondence after the renewal.
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