Options for efficient security surveillance are ever growing, making it a lot more challenging for home and business owners to find the best system that best fits their requirements.
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Options for efficient security surveillance are ever growing, making it a lot more challenging for home
and business owners to find the best system that best fits their requirements. When you are in the
market for a good surveillance system, it pays to know the main types of surveillance rigs providers
offer. DVRs or direct video recorders are two-drive analog recorders that require direct cable
connection as opposed to NVRs or networked video recorders, which use multi-bay surveillance that
connect to an advanced system of networked cameras that record data in high definition.
DVRs may have opened the door to long-term surveillance footage storage, but they do have
limitations especially when compared to more advanced NVR systems. DVRs, for instance, don’t
require internet connection, which can mean positive or negative implications, depending on what
you need surveillance for. DVRs also take work to network so they can be viewed remotely, whereas
NVR systems have inherent wireless capabilities. The VGA cameras which DVR systems use only
have 640x480 maximum resolution, while IP cameras of NVRs can record beyond 1080p. Greater
storage is also one of the biggest advantages of 32 Channel NVR systems, which can be equipped
with up to 16 bays (starting from 8). This translates to as much as 182 TB of footage, which can
support between 32 and 64 high-definition camera channels.
Because NVRs use IP cameras, they allow wireless freedom, which means that camera views can
easily be repositioned as required. NVRs also have the capacity to pre-compress and transcode video
signals at cameral level, as opposed to DVRs, which can only transcode at DVR-level. Even more
advantageous is the fact that NVRs don’t require any drilling through walls or expensive video cable
patching in order to set-up, unlike traditional surveillance systems.
Because compression can be done directly in the field by the network cameras, the CPU can work
better in laying down the pre-compressed files in easy, searchable formats. Despite the advanced
system, NVRs can still run on conventional computer systems with minimum specifications. Just the
same, systems can easily be upgraded so as to support new functionalities and features or to add
more storage. Other advantages of using multi-channel NVR systems include high-resolution
footages up to 1080p and even 4K formats, 64-camera channel support, and mirroring, which enables
duplication of recorded video streams on separate, additional hard drives to minimize chances of
failure and ensure back-up copies of footages.