Distributed deployment, mainly refers to the functional distribution, that is, each business server is responsible for different business functions. Such as streaming media is mainly responsible for media forwarding, gateway server is mainly responsible for MDVR equipment access.
Server cluster Each business server running multiple servers at the same time, by a number of servers at the same time to provide services for customers. The server cluster has the following characteristics: High scalability: The server cluster has a strong scalability. As demand and load grow, you can add more servers to the cluster system.
High Availability: Automatically seamlessly switches the load to other servers when a single server has a fixed heart. load balancing system load balancing is mainly done by the login server. The service server registers the login server and reports the current service status (network status, CPU load status, etc.). The login server performs the corresponding scheduling according to the load of the service server.
Server Implements
Hardware Specification:
| System | Microsoft Windows Server 2003x64 or higher |
| CPU | Intel quad-core Xeon, and the frequency is not less than Xeon 5410 (2.33GHz) |
| Net Card | 2 GigabitEthernet |
| RAM | 8G (or higher) |
| Storage | 1TB |
| CM-ROM | DVR-ROM |
| Others | Support VGA display support ordinary keyboard port, it is recommended to use the USB keyboard port need to have a computer, running, hard disk and other status indicators |
Login server (central management server)
Login server is the central management server, which is mainly the resource information of the server system, and carries on the corresponding dispatch to the system resource, is responsible for the business server load balance. It is recommended to use a dual-server hot backup mode using a logon server. 1 as a main login server, one from the login server, two servers for hot standby. When the primary logon server has an exception, it is serviced by the slave server.
Gateway Server
Provide MDVR device access service. The MDVR device establishes a communication link with the gateway server, and the GPS and alarm data reported by the gateway server access device is stored on the database and is responsible for signaling interaction with the MDVR.
| Spec details | Single server can support up to 10,000 MDVR devices, requiring a bandwidth of 1040KBPS |
With 10,000 MDVR devices, it is recommended 1 + 1 total of 2 gateway servers. Note: increase a gateway server, is the use of redundant methods to avoid a single point of view.
Streaming Server
| Performance specification | The maximum can support 1024 channel video stream distribution, the import media stream bandwidth of up to 320Mbps |
| Single media stream maximum copy output 64, export media bandwidth up to 512Mbps | |
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Gigabit Ethernet port rate, 20Mbps output stream, the average forwarding delay is less than 5m s Gigabit Ethernet port rate, 100Mbps output stream, the average forwarding delay is less than 4ms
Gigabit Ethernet port rate, 512Mbps output stream, the average forwarding delay is less than 20 0ms
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| Video bandwidth | |
| According to each CIF format video 320Kbit per second data, 1024 video needs 320 * 1024 = 327,680Kbit bandwidth |
Streaming media to provide media data forwarding function. Including audio and video, intercom, listening, video query and playback data forwarding. With 10,000 MDVR devices, each device has a camera. A total of 10,000 video, according to the customer preview the video at the same time the probability of 40%, while the need to perform 4000 video forwarding. It is recommended to deploy 4 + 1 total of 5 streaming media servers.
User Server
The user server is primarily responsible for windows
Client access, responding to client interaction requests.
| Performance specification | Single server can support 4096 clients at the same time |
Recommended to use 1 + 1 total of 2 WEB server.
Database Server
The database is mainly used for storing vehicles, users, GPS and alarm events. Our database uses MySQL-5.5.31-win32.
At present, the GPS storage mode is stored in the database in binary mode. Each car needs 200Kbyte space per day. According to the storage time of 1 year, it takes about 700G space. If the alarm and other data are counted, about 1T is needed. The main operating pressure of the database is to update the GPS, alarm data, and respond to user queries.
Considering the health and efficiency of the system, the database server uses master-slave replication, the deployment of two servers. The data update is stored on the Master and the Master synchronization is updated to the Slave. Query, and from the Master and Slave on the query. Reduce the query pressure on a single server. In addition, when the Master appears when the barrier, the service provided by the Slave to ensure the efficiency of the system database server recommended to use more than 16G of memory, while ensuring that the hard disk in more than 3T space.
Download Server
| Performance Specification | Up to 80 simultaneous download video files, each file download traffic 24Mbps, the maximum bandwidth of the import media 1920Mbps |
The WIFI download server is mainly used to download video files on the device. According to the current car 1 camera D1 resolution, hourly video is 800Mbyte, 16 hours a day, the total file size is 12.5GByte.
Storage device selection:
| IP San Specification |
Support 16 hard drives, single disc support 1TB, 2TB, 3TB, 4TB; support hardware RAID 0,1,5,6,10,50, support hot standby;
RAID upgrade speed dynamic adjustment, the effective use of resources; to provide two Gigabit Ethernet port, support for link aggregation and dynamic failover; provide real-time expansion capabilities, access to ordinary IP network capacity, performance, bandwidth expansion; Plug the plug before plugging in the software interface to manually stop the hard disk work to protect the hard disk; support any changes to the hard disk slot location data is not lost;
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According to each IPSAN with 60T hard drive, according to a year 44000T capacity calculation, about 688 IPSAN server.
Video search playback:
download the server to download the file, the video saved to the IPSAN server, while the video file information stored in the database, when the client performs playback, the first retrieval from the database file information, on-demand, directly from the corresponding IPSAN server to obtain video data.
