In recent years, the physical security industry has seen more changes than just about any other time in modern memory. Digital or IP (Internet Protocol) cameras, based on CCD technology, have replaced more familiar analog surveillance cameras in most new installations. And to support them, DVRs (Digital Video Recorders) have virtually eliminated the use of tape and VCRs.Combined, these two IP technologies have opened the way for the physical security industry to dramatically improve video surveillance and other common applications while greatly reducing costs and increasing service levels.
The benefits of scalable, open IP architecture for CCTV systems far outweigh the problems. Most IP storage problems in DVRs (the weakest component) can be either fully eliminated or the risk mitigated with the application of basic techniques and strategies that are common in the IT industry.
One way to avoid data losses is to use RAID technology, either built into the DVR system or added on as an external IP storage array. But what is the difference and what are the relative benefits and drawbacks of RAID 1, 2, 3, 4, 5 & 6? According to IP CCTV specialist Jeff Whitney you should only be specifying Raid 5 for CCTV systems. Read why here.
The ARC Specifying Security Technology Course, 21-25 July 2008, addresses the specification of CCTV, and other physical security systems, and the application of latest security technologies. For more details, contact David.
