Navigating Network Video Recording Topographies
While NVR systems offer a number of benefits, decentralized (but managed) network storage can help integrators and end users achieve goals
Dr. Bob Banerjee
for SecurityInfoWatch.com
November 14, 2007
The topography options of today's IP video recording systems are as diverse as the needs of the organizations using the systems. For a security systems integrator tasked to design the most appropriate and cost-effective solution, the architecture of the system must be the right selection in order to remain suitable for many years to come.
Decisions are based on a variety of factors, some of which include available bandwidth, budget, maintenance requirements, the use of the video, storage requirements as well as the comfort level of depending on the network for the IP video system.
Typically the driving force behind the architecture is where the video will be recorded. This is because this choice forces the key questions of available bandwidth, network reliability, larger shared or smaller dedicated storage, storage reliability and system redundancy. Despite the a (growing) array of possibilities, one of the first major decisions to be made by an integrator during system design is to choose from two major camps: whether to employ a centralized, Network Video Recorder (NVR) solution or a more decentralized approach that used to be addressed by DVRs but now has alternatives including encoders with embedded storage and distributed autonomous iSCSI-based disk arrays. Unlike NVRs, these disk arrays do not use PCs.
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