Here you can find some of the most common Security Automation questions.
Q: What is the optimum RAID configuration for an IP CCTV Server?
A: Whilst the answer to this question is application dependent, it is safe to say that many security applications employ RAID 5 redundancy across three or more disks to provide users with fail-safe storage that can rebuild itself in the event of a failure at the cost of only 1 extra disk per array.
Q: What are the main bottlenecks in an IP CCTV server?
A: The major bandwidth limitation occurs when writing to individual hard disk drives (HDDs) or HDD arrays. The mechanical nature of an HDD makes it slowest part of any IP CCTV server. SAS disks can generally perform more quickly than SATA disks. Another consideration is the network interface. Whilst many servers have a Gigabit LAN interface, none could handle sustained throughput at 1Gbps due to the operating limitations of TCP/IP further up the stack.
Q: What is the most commonly used HDD in IP CCTV server systems?
A: SATA drives provide the most cost-effective bulk storage. Drive sizes of 1TB, 500GB and 250GB are commonplace as of December 2008.
Q: What compression codec should I use from my IP Camera / video encoder?
A: The complete answer is very much application dependent but H.264 provides very good quality vs. compression especially in systems with a large amount of video traffic. MJPEG provides frame by frame video, not good for compression but may be required for evidential purposes. MPEG4 is also a popular solution for high compression requirements.
Q: My Impact-C Realtek LAN is losing connectivity intermittently
A:
Microsoft Auto Updates is miss identifying the LAN Port and installing the incorrect driver.
You will need to set Auto Updates to the following:
"Notify me but don't automatically download or install them"
Once this is done, please use this link to download the driver for your Operating System
