In the rapid growth and development of China recently could be predicted NAS storage pattern in China is going to be faster compared to foreign transmission towards the industry Abroad NAS products is just about the first option for network data storage products as well as an annual rate of increase 66 5 br br Network attached storage programs within the security industry br Using the computer network Technology The rapid growth and development of Video Surveillance Product is presently to be able to Digital recording device Digital hard disk drive video recorder video surveillance system with respect to the entire towards the server to NVS Network Video Server IPCamera network camera and also the recent rise from the NVR Network Video Recorder Network symbolized by Monitoring System Transition phase throughout this transitional phase the huge most of programs in digital and network hybrid systems NetworkDVR Network Digital Dvr is among the reps from the hard disk drive br br In comparison to video surveillance the IP protocol based network video monitoring system can take shape a bigger more complicated more flexible more scalable application system the core a part of an extensive compatible and highly integrated control over intelligent video surveillance software monitoring systems and computer systems information management system attached to two independent systems to integrate to be able to acquire a true triple play data voice and video images br br An entire group of intelligent video surveillance keeper appropriate for medium and enormous IP network video surveillance Atmosphere Not restricted to large ones under video imaging equipment access control systems professional alarm host and atmosphere Monitoring equipment Centralized monitoring and management and geographic information system with GIS along with other computer information management system tightly integrated Because the network video monitoring is an internet based video and audio streaming video and audio streaming in a lot of cases may have video surveillance control over a substantial effect on server performance more data video monitoring and management server I O operation arranging and cache management gets to be more complex frequent visits towards the storage products have to take up lots of assets towards the hindrance of their processing energy br br If video monitoring and management server storage programs is dependant on the DAS the local hard disk drive or plug Disk array Programs frequently these complaints br br Store hard to extend cannot line expansion installation and maintenance are complex br Information systems and data storage abilities cannot separate the recording surveillance management server around the local hard disk drive or exterior Disk Array storage products for example frequency of visits would take lots of system assets lowering the ability to handle streaming data br br Storage utilization is low data discussing difficulties br Vulnerable to single points of failure once the local hard disk drive or exterior disk array logical or physical failure happens all of the saved data might be lost resulting in interruptions br br Contrast NAS network access storage more appropriate for any new generation of network video surveillance systems Network Video Monitoring System for Distributed Networked Storage anytime based on need expansion storage products could be distributed any place in the network the versatility to build up storage backup strategy ‘)