CN101997861B - Data storage method and equipment - Google Patents
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- CN101997861B CN101997861B CN2009101693798A CN200910169379A CN101997861B CN 101997861 B CN101997861 B CN 101997861B CN 2009101693798 A CN2009101693798 A CN 2009101693798A CN 200910169379 A CN200910169379 A CN 200910169379A CN 101997861 B CN101997861 B CN 101997861B
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Abstract
The invention discloses a data storage method and equipment. The method is applied to an application server and storage equipment based on an iSCSI (Internet Small Computer System Interface) protocol, wherein the application server and the storage equipment are connected through a network. The method comprises the steps of: when the storage equipment receives a data storage request sent by the application server, judging the network state between the storage equipment and the application server; when the network state is judged to be blockage by the storage equipment, sending a response message to the application server, notifying the application service of network jamming, and refusing to send data to the storage equipment by the application server; and when the network state is judged to be normal by the storage equipment, sending a response message to the application server, and receiving the data sent by the application server. By using the invention, the situation of network jamming can be avoided in a data storage process, and the network use efficiency and data storage performance are improved.
Description
Technical field
The present invention relates to communication field, relate in particular to a kind of date storage method and equipment.
Background technology
When most enterprises because Fiber Channel expensive and when SAN kept someone at a respectful distance, iSCSI (internet Small Computer System Interface, small computer system interface based on internet) appearance of the technology distance between enterprise and the SAN (Storage Area Network, storage area network) that furthered.At present, we residing information age, the collection of information be treated as the key that determines Business survival and development, face mass data, it is unable to do what one wishes that many enterprises have felt.The realization of iSCSI can be at IP (Internet Protocol, Internet Protocol) function of application SCSI on the network, advantages such as the maturity of existing IP network and popularization have been taken full advantage of, allow the user by TCP (TransmissionControl Protocol, transmission control protocol)/IP network makes up storage area network SAN, economical rationality and the memory device being convenient to manage provided the ability of direct visit for numerous enterprises.
ISCSI is a kind of SCSI host-host protocol based on TCP/IP, is used for transmitting scsi command and data by IP network between application server and storage system.At present, iscsi technology is standardization, and in the industry cycle progressively obtains widely and use.
One based on the typical applied environment of iSCSI agreement as shown in Figure 1.An iSCSI initiator module is set in application server, an iSCSI target module is set in storage system.Application server is encapsulated in scsi command (can comprise data) in the iSCSI message, sends to storage system by IP network, and storage system is handled each iSCSI message, takes out data wherein and is written in the storage medium (as disk).
In the existing technical scheme, be at computer server initiator software (hardware that perhaps has the initiator function) to be installed, on memory device, disposed by administrator hand, the SAN resource is distributed to server, server connects by the target of initiator and memory device then, and the resource of distributing to it is carried out reading and writing data.
When initiator need carry out data when writing to target, target judges whether LUN (Logical UnitNumber, logical block) whether can carry out data and write (whether the disk of observing SAN resource place is normal), if it is normal, so just normal to the initiator feedback information, can carry out data and write, initiator just writes data to the SAN resource; If unusual, so just unusual to the initiator feedback, can't carry out data and write.
In existing data-selected scheme, the target end can only judge whether the SAN resource can be write, if the SAN resource can be write, will notify initiator normal so, and initiator just can write data to the SAN resource.Target can not judge network condition.For example for network environment shown in Figure 2, in case go-between generation flash crowd, but the SAN resource can be write again, target still can notify initiator normal, and this moment, initiator can continue to write data to the SAN resource, write data by iSCSI stream, because iSCSI is based upon on the TCP connection, when network congestion, TCP can constantly retransmit, till sending end.If there are this moment a plurality of TCP to connect, many iSCSI streams, these fail to be convened for lack of a quorum and constantly retransmit, and the influence of network flash crowd can become the congested of long period, will reduce the speed that data are write like this, the performance of influence storage.
Summary of the invention
The invention provides a kind of date storage method and equipment, be used for reducing network congestion to the influence of data storage at the network based on the iSCSI agreement, improve data storage efficiency.
The invention provides a kind of date storage method, be applied to application server and memory device based on the iSCSI protocol interaction, described application server and memory device are by network connection, and described method comprises:
When memory device receives the data storage request of application server transmission, the network condition between judgement and described application server;
When described memory device is judged network condition for obstruction, send response message to described application server, notify described application server network congestion, refuse described application server and send data to described memory device; After described network condition is recovered normally, receive the data that described application server sends;
Described memory device judges that network condition for just often, sends response message to described application server, receives the data that described application server sends.
Wherein, the network condition between described judgement and described application server comprises:
Described memory device sends the Ping message to described application server, according to described application server time delay is obtained in the response of described Ping message;
Described time delay is during greater than default time threshold, and described memory device is judged network condition for blocking, otherwise judges that network condition is normal.
Wherein, describedly notify described application server network congestion, after stopping to send data to described memory device, also comprise:
The information of the described application server of described memory device, stores;
Described memory device is according to the information of described application server of storage, regularly detect and described application server between network condition;
Described memory device judges that network condition for just often, sends response message to described application server, receives the data that described application server sends, and the information of the described application server of deletion storage.
Wherein, described memory device detects described network condition all the time in the default time when being congested, send a notification message to described application server, notify described application server can't receive the data that described application server sends, and the information of the described application server of deletion storage.
The present invention also provides a kind of date storage method, is applied to application server and memory device based on the iSCSI protocol interaction, and described application server and memory device are by network connection, and described method comprises:
Application server sends data storage request to memory device;
Described application server receives the response message that described memory device sends, and when the content of described response message is network congestion, stops to send data to described memory device; When the content of described response message is the data of reception application server transmission, send data to described memory device.
Wherein, when described content when described response message is network congestion, stop after described memory device transmission data, also to comprise:
After described application server waits for a period of time, send data storage request to memory device again, until the response message of the content that receives described memory device transmission for the data of reception application server transmission, send data to described memory device; Or
Described application server stops to send data storage request, when receiving content that described memory device sends for the response message of the data that receive application server and send, sends data to described memory device.
Wherein, when the number of times that described application server sends data storage request to memory device continuously surpasses default thresholding, stop to send data storage request to described memory device.
The present invention also provides a kind of memory device, is applied to comprise that described application server and memory device are by network connection in the system based on the application server of iSCSI protocol interaction and memory device, and described memory device comprises:
The network condition judging unit, when being used for receiving the data storage request of application server transmission, the network condition between judgement and described application server;
The response message transmitting element, be used for when described network condition judgment unit judges network condition is obstruction, send response message to described application server, notify described application server network congestion, refuse described application server and send data to described memory device; After described network condition is recovered normally, receive the data that described memory device sends; When described network condition judgment unit judges network condition for just often, send response message to described application server, receive the data that described application server sends.
Wherein, described network condition judging unit comprises:
Time delay is obtained subelement, is used for sending the Ping message to described application server, according to described application server time delay is obtained in the response of described Ping message;
The network condition judgment sub-unit is used for when described time delay is obtained time delay that subelement obtains greater than default time threshold, judge network condition for blocking, otherwise the judgement network condition is normal.
Wherein, also comprise:
Information memory cell is used for when the network condition between described network condition judgment unit judges and an application server is obstruction the information of storing described application server;
Described network condition judging unit also is used for the information according to the application server of described information memory cell storage, regularly the network condition between detection and described application server;
Described response message transmitting element, also be used for network condition when between the application server that described network condition judgment unit judges information and described memory cell are stored for just often, send response message to described application server, receive described application server and send the data for the treatment of; And the information of deleting the described application server of storing in the described information memory cell; When described network condition judging unit when to detect described network condition all the time in the default time be congested, send a notification message to described application server, notify described application server can't receive the data that described application server sends, and the information of deleting the described application server of storing in the described information memory cell.
The present invention also provides a kind of application server, is applied to comprise that described application server and memory device are by network connection in the system based on the application server of iSCSI protocol interaction and memory device, and described application server comprises:
Information interaction unit is used for sending data storage request to memory device, and receives the response message that described memory device sends;
Processing unit when the content that is used for the response message that receives when described information interaction unit is network congestion, stops to described memory device transmission data; When the content of described response message is the data of reception application server transmission, send data to described memory device.
Wherein, described information interaction unit, also be used for when the content of the response message that receives is network congestion, after waiting for a period of time, send data storage request to memory device again, when receiving content that described memory device sends for the response message of the data that receive application server and send, notify described processing unit; When continuous number of times to memory device transmission data storage request surpasses default thresholding, stop to send data storage request to described memory device; Or
Described information interaction unit, also be used for when the content of the response message that receives is network congestion, stop to send data storage request, when receiving content that described memory device sends for the response message of the data that receive application server and send, notify described processing unit.
Compared with prior art, the present invention has the following advantages:
When application server carried out data write operation to memory device, memory device judged at first whether network is congested, if congested, then just send the response message of network congestion to application server, application server suspends data and writes, wait network not congested after, carry out data again and write.Thereby reduced in the data storage procedure unnecessary congestedly, improved efficient that network uses and the memory property of memory device.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a typical applied environment schematic diagram based on the iSCSI agreement in the prior art;
Fig. 2 is the structural representation of application server in the prior art, memory device and go-between;
Fig. 3 is the flow chart of the date storage method that provides among the present invention;
Fig. 4 is the structural representation of the Response message that relates in the present invention's one application scenarios;
Fig. 5 is the structural representation of the Response message of the expression network congestion that relates in the present invention's one application scenarios;
Fig. 6 is the flow chart of the date storage method that provides in the present invention's one application scenarios;
Fig. 7 is the flow chart of the date storage method that provides in the Another Application scene of the present invention;
Fig. 8 is the structural representation of the asynchronous message that relates in the present invention's one application scenarios;
Fig. 9 is the structural representation of the memory device that provides among the present invention;
Figure 10 is the structural representation of the application server that provides among the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
The invention provides a kind of date storage method, be applied in the application server and memory device based on the iSCSI protocol interaction, this method comprises as shown in Figure 3:
Step s301, application server send data storage request to memory device;
When step s302, memory device receive the data storage request of application server transmission, the network condition between judgement and application server;
When step s303, memory device are judged network condition for obstruction, send response message to application server, the network congestion of notice application server, the refusal application server sends data to memory device; Memory device judges that network condition for just often, sends response message to application server, receives the data that application server sends;
Step s304, application server receive the response message that memory device sends, and when the content of response message is network congestion, stop to send data to memory device; When the content of response message is the data of reception application server transmission, send data to memory device.
Among the above-mentioned steps s303, judge that when memory device network condition for just often, sends response message to application server, notify the step of the data of application server transmission, identical with method of the prior art.Wherein employed response message is the Response message, and its structure as shown in Figure 4.
Among the above-mentioned steps s303, when memory device is judged network condition for obstruction, send response message to application server, in the step of notice application server network congestion, the response message that uses is the Response message, on concrete implementation, can utilize the retention of " response " field in the Response message, in existing iSCSI agreement, the value of response field is defined as follows:
0x00 - Command Completed at Target
0x01 - Target Failure
0x80-0xff - Vendor specific
Among the present invention, for network congestion, the value that will define the Response field so is:
0x90 - Network Congestion
Be used for the expression network congestion, can certainly adopt other field values to represent network congestion.The structure of corresponding Response message as shown in Figure 5.The value that application server receives the response field that memory device sends stops to send data to memory device during for the Response message of " 0x90 ".
In addition, after the content in the response message that application server receives is network congestion, stops after memory device transmission data, can confirm by other means that network is normal, at this data to be stored are sent to memory device.Two kinds of optional modes below are provided, and are described respectively.
In first application scenarios of the present invention, as shown in Figure 6, comprising:
Step s601, application server send the data write request to memory device.
After step s602, memory device are received this request, send the ping message to application server, treat that application server is responded after, obtain time delay.
Step s603, memory device judge according to the time delay of obtaining whether network blocks, and are then to carry out step s604, otherwise carry out step s607.
Concrete, judge whether the standard whether network blocks determines that greater than certain time threshold this time threshold can arrange as required, as being set to 100ms according to time delay.When time delay surpasses 100ms, judge network congestion; When time delay does not surpass 100ms, judge that network is normal.
Step s604, memory device send the Response message to application server, the network congestion of notice application server.
Step s605, application server receive the response message that memory device sends, and when the content of discovery response message is network congestion, stop to send data to memory device.
Step s606, application server wait for a period of time, and return step s601.
Concrete, the time of this wait can be the set time that sets in advance, and also can be a random number (as the random number between 0～1 second).
Step s607, memory device send response message to application server, receive the data that application server sends.
Step s608, application server send data to be stored to memory device.
Among above-mentioned steps s605～s606, if the application server continuous several times sends data storage request to memory device, when but the content of the response message that receives all the time is network congestion, in order to save the resource of application server, when if the transmission number of times of judgment data storage request surpasses default thresholding, then application server can stop to continue to send data storage request to memory device.Application server can be initiated data storage request again after certain long time.
In second application scenarios of the present invention, as shown in Figure 7, comprising:
Step s701, application server send the data write request to memory device.
After step s702, memory device are received this request, send the ping message to application server, treat that application server is responded after, obtain time delay.
Step s703, memory device judge according to the time delay of obtaining whether network blocks, and are then to carry out step s704, otherwise carry out step s707.
Step s704, memory device send the Response message to application server, the network congestion of notice application server; Application server receives this response message, stops to send data to memory device.
Step s705, memory device carry out record with the information of application server.
Concrete, for judging network congestion taking place, refuses the application server that data write, memory device is after the network congestion of notice application server, the information (as IP address, MAC Address etc.) of this application server is recorded in the network congestion table, can also comprises the time of notifying this application server generation network congestion in this table.The form of this network congestion table can be as shown in table 1:
Table 1. network congestion table
| Application server ID | The IP address | The time that informing network is congested |
| Initiator-1 | 192.168.0.55 | 10:29:08.93 |
| Initiator-2 | 192.168.0.56 | 10:32:06.83 |
Step s706, memory device be according to the information of the application server of record, regularly detect and application server between network condition.This regular detection can be regularly to detect in the benchmark cycle of carrying out (for example for Initiator-1, to be benchmark with 10:29:08.93, to detect once every 1s with the congested time of informing network; For Initiator-2, be benchmark with 192.168.0.56, detect once every 1s) or be regularly to detect (for example for Initiator-1 and Initiator-2, all be benchmark with 10:29:00.00, detect once every 1s) the standard cycle of carrying out with the unified time.If congested then continuation detects, otherwise sends response message to application server, receive the data that application server sends, and delete the information of this application server of storage, flow process finishes.
Concrete, memory device is asynchronous message to the response message that application server sends in this step, the AsyncEvent field contents of this asynchronous message is network ok, and the content of AsyncVCode field is 6, the structure of this asynchronous message is as shown in Figure 8.
Among the above-mentioned steps s706, wait for for a long time for fear of application server, network condition was congested situation as described in (as 30s) detected all the time in the default time for memory device, memory device can send a notification message to application server, and the notice application server can't receive the data of its transmission.Then application server can be initiated data storage request again after certain long period.
Step s707, memory device send response message to application server, receive the data that application server sends.
Step s708, application server send data to be stored to memory device.
In the said method provided by the invention, when application server carries out data write operation to memory device, memory device judges at first whether network is congested, if it is congested, then just send the response message of network congestion to application server, application server suspends data and writes, wait network not congested after, carry out data again and write.Thereby reduced in the data storage procedure unnecessary congestedly, improved efficient that network uses and the memory property of memory device.
The present invention also provides a kind of memory device, is applied to comprise in the system based on the application server of iSCSI protocol interaction and memory device, as shown in Figure 9, comprising:
Network condition judging unit 10, when being used for receiving the data storage request of application server transmission, the network condition between judgement and application server; This network condition judging unit 10 specifically can comprise:
Time delay is obtained subelement 11, is used for sending the Ping message to application server, according to application server time delay is obtained in the response of Ping message; Network condition judgment sub-unit 12 is used for when time delay is obtained time delay that subelement 11 obtains greater than default time threshold, judge network condition for blocking, otherwise the judgement network condition is normal.
Response message transmitting element 20 is used for sending response message to application server when network condition judgment unit judges network condition is obstruction, the network congestion of notice application server, and the refusal application server sends data to memory device; After network condition is recovered normally, receive the data that memory device sends; When network condition judgment unit judges network condition for just often, send response message to application server, receive the data that application server sends.
This memory device can also comprise:
Network condition judging unit 10 also is used for the information according to the application server of information memory cell 30 storages, regularly the network condition between detection and application server;
Response message transmitting element 20, also be used for network condition when between the application server that network condition judging unit 10 judgement information and described memory cell are stored for just often, send response message to application server, receive application server and send the data for the treatment of; And the information of this application server of storing in the deletion information memory cell 30.When network condition judging unit 10 when to detect network condition all the time in the default time be congested, send a notification message to application server, the notice application server can't receive the data that application server sends, and the information of the application server of storing in the deletion information memory cell 30.
The present invention also provides a kind of application server, is applied to comprise in the system based on the application server of iSCSI protocol interaction and memory device, as shown in figure 10, comprising:
Processing unit 60 when the content that is used for the response message that receives when information interaction unit 50 is network congestion, stops to memory device transmission data; When the content of response message is the data of reception application server transmission, send data to memory device.
In addition, information interaction unit 50, also be used for when the content of the response message that receives is network congestion, after waiting for a period of time, send data storage request to memory device again, when receiving content that memory device sends for the response message of the data that receive application server and send, notifier processes unit 60; When continuous number of times to memory device transmission data storage request surpasses default thresholding, stop to send data storage request to memory device; Or be used for when the content of the response message that receives is network congestion, stopping to send data storage request, when receiving content that memory device sends for the response message of the data that receive the application server transmission, notifier processes unit 60.
In the said equipment provided by the invention, when application server carries out data write operation to memory device, memory device judges at first whether network is congested, if it is congested, then just send the response message of network congestion to application server, application server suspends data and writes, wait network not congested after, carry out data again and write.Thereby reduced in the data storage procedure unnecessary congestedly, improved efficient that network uses and the memory property of memory device.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by hardware, also can realize by the mode that software adds necessary general hardware platform.Based on such understanding, technical scheme of the present invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, the unit in the accompanying drawing or flow process might not be that enforcement the present invention is necessary.
It will be appreciated by those skilled in the art that the unit in the device among the embodiment can be distributed in the device of embodiment according to the embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.A unit can be merged in the unit of above-described embodiment, also can further split into a plurality of subelements.
The invention described above embodiment sequence number does not represent the quality of embodiment just to description.
Claims (12)
1. a date storage method is characterized in that, is applied to application server and memory device based on the iSCSI protocol interaction, and described application server and memory device are by network connection, and described method comprises:
When memory device receives the data storage request of application server transmission, the network condition between judgement and described application server;
When described memory device is judged network condition for obstruction, send response message to described application server, notify described application server network congestion, refuse described application server and send data to described memory device; After described network condition is recovered normally, receive the data that described application server sends;
Described memory device judges that network condition for just often, sends response message to described application server, receives the data that described application server sends.
2. the method for claim 1 is characterized in that, the network condition between described judgement and described application server comprises:
Described memory device sends the Ping message to described application server, according to described application server time delay is obtained in the response of described Ping message;
Described time delay is during greater than default time threshold, and described memory device is judged network condition for blocking, otherwise judges that network condition is normal.
3. the method for claim 1 is characterized in that, describedly notifies described application server network congestion, after stopping to send data to described memory device, also comprises:
The information of the described application server of described memory device, stores;
Described memory device is according to the information of described application server of storage, regularly detect and described application server between network condition;
Described memory device judges that network condition for just often, sends response message to described application server, receives the data that described application server sends, and the information of the described application server of deletion storage.
4. method as claimed in claim 3, it is characterized in that, described memory device detects described network condition all the time in the default time when being congested, send a notification message to described application server, notify described application server can't receive the data that described application server sends, and the information of the described application server of deletion storage.
5. a date storage method is characterized in that, is applied to application server and memory device based on the iSCSI protocol interaction, and described application server and memory device are by network connection, and described method comprises:
Application server sends data storage request to memory device;
Described application server receives the response message that described memory device sends, and when the content of described response message is network congestion, stops to send data to described memory device; When the content of described response message is the data of reception application server transmission, send data to described memory device.
6. method as claimed in claim 5 is characterized in that, when described content when described response message is network congestion, stops also to comprise after described memory device transmission data:
After described application server waits for a period of time, send data storage request to memory device again, until the response message of the content that receives described memory device transmission for the data of reception application server transmission, send data to described memory device; Or
Described application server stops to send data storage request, when receiving content that described memory device sends for the response message of the data that receive application server and send, sends data to described memory device.
7. method as claimed in claim 6 is characterized in that, when the number of times that described application server sends data storage request to memory device continuously surpasses default thresholding, stops to send data storage request to described memory device.
8. a memory device is characterized in that, is applied to comprise that described application server and memory device are by network connection in the system based on the application server of iSCSI protocol interaction and memory device, and described memory device comprises:
The network condition judging unit, when being used for receiving the data storage request of application server transmission, the network condition between judgement and described application server;
The response message transmitting element, be used for when described network condition judgment unit judges network condition is obstruction, send response message to described application server, notify described application server network congestion, refuse described application server and send data to described memory device; After described network condition is recovered normally, receive the data that described application server sends; When described network condition judgment unit judges network condition for just often, send response message to described application server, receive the data that described application server sends.
9. memory device as claimed in claim 8 is characterized in that, described network condition judging unit comprises:
Time delay is obtained subelement, is used for sending the Ping message to described application server, according to described application server time delay is obtained in the response of described Ping message;
The network condition judgment sub-unit is used for when described time delay is obtained time delay that subelement obtains greater than default time threshold, judge network condition for blocking, otherwise the judgement network condition is normal.
10. memory device as claimed in claim 8 is characterized in that, also comprises:
Information memory cell is used for when the network condition between described network condition judgment unit judges and an application server is obstruction the information of storing described application server;
Described network condition judging unit also is used for the information according to the application server of described information memory cell storage, regularly the network condition between detection and described application server;
Described response message transmitting element, also be used for network condition when between the application server that described network condition judgment unit judges and described memory cell are stored for just often, send response message to described application server, receive the data that described application server sends; And the information of deleting the described application server of storing in the described information memory cell; When described network condition judging unit when to detect described network condition all the time in the default time be congested, send a notification message to described application server, notify described application server can't receive the data that described application server sends, and the information of deleting the described application server of storing in the described information memory cell.
11. an application server is characterized in that, is applied to comprise that described application server and memory device are by network connection in the system based on the application server of iSCSI protocol interaction and memory device, described application server comprises:
Information interaction unit is used for sending data storage request to memory device, and receives the response message that described memory device sends;
Processing unit when the content that is used for the response message that receives when described information interaction unit is network congestion, stops to described memory device transmission data; When the content of described response message is the data of reception application server transmission, send data to described memory device.
12. application server as claimed in claim 11 is characterized in that,
Described information interaction unit, also be used for when the content of the response message that receives is network congestion, after waiting for a period of time, send data storage request to memory device again, when receiving content that described memory device sends for the response message of the data that receive application server and send, notify described processing unit; When continuous number of times to memory device transmission data storage request surpasses default thresholding, stop to send data storage request to described memory device; Or
Described information interaction unit, also be used for when the content of the response message that receives is network congestion, stop to send data storage request, when receiving content that described memory device sends for the response message of the data that receive application server and send, notify described processing unit.
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| US8914537B2 (en) * | 2012-08-07 | 2014-12-16 | Intel Mobile Communications GmbH | Methods and apparatuses for rate adaptation of quality of service based application |
| CN103929455A (en) * | 2013-01-15 | 2014-07-16 | 北京东方通科技股份有限公司 | Asynchronous file transmission system and method comprising network storage equipment |
| CN106612240B (en) * | 2016-12-27 | 2019-07-30 | 郑州云海信息技术有限公司 | A kind of storage high-efficiency network connection system and method |
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| CN113271282B (en) * | 2020-02-14 | 2023-06-20 | 西安诺瓦星云科技股份有限公司 | Program updating method, device and system |
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| CN1759542A (en) * | 2003-03-14 | 2006-04-12 | 摩托罗拉公司 | Method and apparatus for providing deferrable data services in a cellular communication system |
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| CN1497541A (en) * | 2002-10-14 | 2004-05-19 | ���ǵ�����ʽ���� | Optical disc system and method for processing shock during data recording and playing |
| CN1759542A (en) * | 2003-03-14 | 2006-04-12 | 摩托罗拉公司 | Method and apparatus for providing deferrable data services in a cellular communication system |
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