Hanwha Techwin America introduce a building block NVR solution
Hanwha Techwin America introduce a building block NVR solution

Samsung has introduced a scaleable ‘building block’ network video recording system designed to uncomplicate the process of specifying a video storage solution large enough to meet immediate requirements, but which can be easily expanded if needed in the future. Samsung’s new ONVIF compliant SRN-1000 NVR provides up to 24TB of on-board video storage capacity and there is the potential of an additional 24TB of storage via two external e-Sata direct storage devices. An unlimited number of SRN-1000s can work in harmony to provide a seamless server style video recording solution. “We have taken the mystique and fear out of estimating how much video storage to allow for,” said Tim Biddulph, IP Product Manager for Samsung Techwin Europe Ltd. “Even experienced installers have told us that this can be a very costly mistake if they get it wrong, but it is obviously of particular concern for those who have limited experience of installing Video over IP systems.” By using a simple calculation chart and by taking into account the frame rate and image resolution requirements for each of the specified cameras; it is a simple matter to calculate how many SRN-1000s will be required for any video surveillance project. The Linux based SRN-1000 NVR can record at 100MBs, supports H.264, MPEG-4 and  MJPEG compression, and is fully compatible with Samsung Centralised Management Software which enables users from anywhere in the world to have access to live or recorded video via a PC or mobile device such as a smartphone or tablet In addition to Samsung megapixel and HD cameras, the SRN-1000 also supports AXIS, Panasonic and Sony ONVIF compliant cameras.  “Our design engineers have put a lot of thought into how to make this building block solution as installer friendly as possible,” said Tim Biddulph. “For example, as each of the SRN-1000’s eight internal HDDs is installed, they are automatically recognised and added to the recorder and immediately available for recording.” As is the case with all Samsung professional security products, the SRN-1000 is supplied with full support services from Samsung Techwin Europe Ltd, including free system design, free technical support and a full three-year warranty. Samsung’s professional security products are widely accessible across Europe via an extensive network of distributors. For further information please email STEsecurity@samsung.com or telephone +44 (0)1932 45 5308 or visit www.samsungsecurity.com

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Dahua introduces three more NVRs to its professional NVR 54-series
Dahua introduces three more NVRs to its professional NVR 54-series

Dahua further completes its NVR portfolio by introducing three more series, covering two entry-level models and one high-end model. Professional NVR54-series The 54-series is designed for medium-sized applications that require relatively high demand on storage capacity, such as telecom, electricity, public security, franchised stores and etc. The series has multiple sub-models, including 8-/16-/32-channels, and PoE versions. Here to take NVR5416/5432-16P as an example. The NVR5416/5432-16P supports 16/32 channel with 1080p live view, up to 5Mp & 5Mp cameras, featuring 160Mps for inputs and 128Mps for outputs, which could satisfy smooth recording at HD-megapixel level for multiple cameras at the same time. It max accommodates 4 SATAs, up to 4TB for each. Meanwhile, this series supports maximum 128 online users to operate and manage simultaneously. In addition, the “frame by frame playback” is quite convenient for users to pin the moment as key evidences. This NVR also supports Dahua motorised-lens network cameras to realise auto focus/zoom and other basic functions directly on the NVR, facilitating user’s operation. What worth a special mention is that the NVR is equipped with 16 PoE ports and support IPC UPnP function, which could simplify the installation and configuration. Entry-level NVR31/21H-series Following the big success of previous 31/21 series, Dahua adds enhanced versions of the previous 31/21 edition, targeting on small- and medium-sized applications, such as SOHO, convenience stores and retails. NVR31H-series supports 4-channel@1080p real-time preview and recording while NVR21H-series supports 4-channel@72op. This series adds two-way audio and alarm functions as well as remote control. What’s more, it enjoys two “L” — low consumption and low noise, keeping “environment-friendly” guideline in design and production. All Dahua NVRs conform to ONVIF protocol and support a wide range of third party cameras.

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Hanwha Techwin America’s new network video recorders offer the familiarity of a DVR
Hanwha Techwin America’s new network video recorders offer the familiarity of a DVR

Unlike most NVRs, which can only be programmed remotely, the two new Samsung models can also be locally configured and controlled with the help of a mouse and a very easy to use multi-language on-screen graphical user interface.The four channel Samsung SRN-470D and sixteen channel SRN-1670D both utilise H.264 compression to minimise bandwidth requirements whilst maintaining high image quality and also offer the option of using MPEG-4 or MJPEG compression. A recording throughput of 64mbps allows both models to simultaneously record in real time 704 x 480 resolution images from all connected cameras or up to Full HD (1920 x 1080) from selected cameras from Samsung's comprehensive range of IP cameras, Full HD megapixel, HD megapixel, 4-CIF and VGA cameras."I am confident that the competitively priced SRN-470D and SRN-1670D NVRs will very quickly become popular with both installers and users," said Tim Biddulph, IP Product Manager for Samsung Techwin Europe Ltd. "A key benefit of an NVR is that it can be installed anywhere on a network. This could be in a central control room or immediately adjacent to sets of cameras, but wherever it is located, a separate PC is usually required by installers for programming purposes, as well as for a user to view the live or recorded images. The great advantage offered by the SRN-470D and SRN-1670D is that it can be programmed and controlled by just the use of a plug-in mouse and in this respect it offers familiarity with a DVR. This should prove to be a particularly attractive feature for installers who have limited experience of commissioning IP network based recording solutions."An additional installer friendly and time saving feature incorporated into the SRN-470D and SRN-1670D is the ability to automatically detect and register all of the connected cameras. The SRN-470D has the facility for a 2TB SATA HDD, whilst the SRN-1670D, with the capacity for five SATA HDDs, offers the potential for a massive 10TB of on-board storage. Both models can record audio across all channels and have a built-in DVD Writer and USB ports for easy export of video as well as a 1080P resolution HDMI output. Full compatibility with Samsung's license-free NET-i Viewer Centralised Management Software (CMS) ensures users can access an SRN-470D or SRN-1670D NVR via a PC from anywhere in the world, keeping people connected 24/7 with their security systems wherever they may be. Available from all Samsung distributors, the SRN-470D or SRN-1670D SRN are offered with full support services from Samsung Techwin Europe Ltd, including free system design, free technical support and a full three-year warranty.For further information please email STEsecurity@samsung.com or telephone +44 (0)1932 45 5308 or http://www.samsungsecurity.com/

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Hanwha Techwin America Techwin introduces new  high performance 64 channel NVR
Hanwha Techwin America Techwin introduces new high performance 64 channel NVR

The ability to record in real-time the images from 64 x 2 Megapixel cameras may be impressive, but it is the features that make the SRN-4000 so highly resilient and easy to use that are likely to attract the attention of installers and system integrators who are looking to minimise the total cost of ownership of their clients’ video surveillance systems. The SRN-4000 is able to simultaneously record and multi-stream the transmission of images at a high bandwidth speed of 400Mbps. It also offers the potential to record and store, via 12 internal hard drives, video captured by 64 x 2 Megapixel cameras for up to 108 days or up to 43 days for the same number of 5 Megapixel cameras. As well as the full range of Samsung Techwin IP network cameras, the SRN-4000 also supports other manufacturers’ cameras which are ONVIF compliant.  The 12 internal hot-swappable hard drives support RAID5 and RAID6 recording which provides protection against unrecoverable read errors as well as whole HDD failure. The SRN-400 also features an iSCSI interface giving users access to very large storage devices, if required. A lot of thought has gone into the SRN-4000’s on-screen user interface to ensure that it can be configured in only four steps using the ‘Easy Setup’ wizard, whilst cameras can be registered without complication via a quick set up process. The provision of a local monitor output means that a separate PC is not needed to carry out any of these functions. A mouse and a monitor can simply be connected directly to the SRN-4000 and installers can then easily add and set up cameras. “The SRN-4000 has a long list of features designed to ensure that it is highly reliable and resilient as well as easy to use and operate,” said Tim Biddulph, IP Product Manager for Samsung Techwin Europe Ltd. “Our design engineers have, for example, built in a hard drive ‘Hot Swap’ facility so that recording is not interrupted if a fault occurs, whilst power reliability is enhanced by way of a dual power supply. The SRN-4000 will continue to operate with a single power supply while the failed unit is replaced.” Fast and efficient searching The SRN-4000 enables users to quickly find and review video of any incident by using a combination of advanced motion detection as well as video analytics and metadata search options. Images can be searched by classification, e.g. keyword search such as ‘car’ or ‘people’, whilst a heat map feature provides the opportunity to statistically analyse concentrated spots of activity.

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Network Video Recorders (NVRs) - Expert commentary

How to choose the right storage card for video surveillance systems
How to choose the right storage card for video surveillance systems

With increased demands being placed on safety and security globally, and supported by advancements in IP cameras and 360-degree camera technology, the video surveillance industry is growing steadily. Market research indicates that this worldwide industry is expected to reach an estimated $39.3 billion in revenue by 2023, driven by a CAGR of 9.3 percent from 2018 to 2023. Video surveillance is not just about capturing footage (to review an event or incident when it occurs), but also about data analysis delivering actionable insights that can improve operational efficiencies, better understand customer buying behaviours, or simply just provide added value and intelligence. Growth of Ultra-HD surveillance To ensure that the quality of the data is good enough to extract the details required to drive these insights, surveillance cameras are technologically evolving as well, not only with expanded capabilities surrounding optical zoom and motion range,4K Ultra HD-compliant networked cameras are expected to grow from 0.4 percent shipped in 2017, to 28 percent in 2021 but also relating to improvements in signal-to-noise (S2N) ratios, light sensitivities (and the minimum illumination needed to produce usable images), wide dynamic ranges (WDR) for varying foreground and background illumination requirements, and of course, higher quality resolutions. As such, 4K Ultra HD-compliant networked cameras are expected to grow from 0.4 percent shipped in 2017, to 28 percent in 2021, representing an astonishing 170 percent growth per year, and will require three to six times the storage space of 1080p video dependent on the compression technology used. Surveillance cameras are typically connected to a networked video recorder (NVR) that acts as a gateway or local server, collecting data from the cameras and running video management software (VMS), as well as analytics. Capturing this data is dependent on the communications path between individual cameras and the NVR. If this connection is lost, whether intentional, unintentional, or a simple malfunction, surveillance video will no longer be captured and the system will cease operations. Therefore, it has become common to use microSD cards in surveillance cameras as a failsafe mechanism. Despite lost connectivity to the NVR, the camera can still record and capture raw footage locally until the network is restored, which in itself, could take a long time depending on maintenance staff or equipment availability, weather conditions, or other unplanned issues. Since microSD cards play a critical role as a failsafe mechanism to ensure service availability, it is important to choose the right card for capturing video footage.  It has become common to use microSD cards in surveillance cameras as a failsafe mechanism if an NVR breaks Key characteristics of microSDs There are many different microSD cards to choose from for video capture at the network’s edge, and they range from industrial grade capabilities to commercial or retail grade, and everything in-between. To help make some of these uncertainties a little more certain, here are the key microSD card characteristics for video camera capture. Designed for surveillance As the market enjoys steady growth, storage vendors want to participate and have done so with a number of repurposed, repackaged, remarketed microSD cards targeted for video surveillance but with not much robustness, performance or capabilities specific to the application. Adding the absence of mean-time between failure (MTBF) specifications to the equation, microSD card reliability is typically a perceived measurement -- measured in hours of operation and relatively vague and hidden under metrics associated with the camera’s resolution and compression ratio. Therefore, when selecting a microSD card for surveillance cams at the edge, the choice should include a vendor that is trusted, has experience and a proven storage portfolio in video surveillance, and in microSD card technologies. Endurance, as it relates to microSD cards, represents the number of rewrites possible before the card can no longer store data correctly  High endurance Endurance, as it relates to microSD cards, represents the number of rewrites (program/erase cycles) that are possible before the card can no longer store data correctly. The rewrite operation is cyclical whereby a new stream of footage replaces older content by writing over it until the card is full, and the cycle repeats. The higher the endurance, the longer the card will perform before it needs to be replaced. Endurance is also referred to in terabytes written (TBW) or by the number of hours that the card can record continuously (while overwriting data) before a failure will occur. Health monitoring Health monitoring is a desired capability that not many microSD cards currently support and enables the host system to check when the endurance levels of a card are low and needs to be replaced. Having a card that supports this capability enables system integrators and operators with the ability to perform preemptive maintenance that will help to reduce system failures, as well as associated maintenance costs. Performance To capture continuous streams of raw footage, microSD cards within surveillance cams perform write operations about seventy to ninety percent of the time, whereas reading captured footage is performed about ten to thirty percent. The difference in read/write performance is dependent on whether the card is used in an artificial intelligent (AI) capable camera, or a standard one.   microSD cards deployed within surveillance cameras should support temperature ranges from -25 degrees Celsius to 85 degrees Celsius Finding a card that is write-friendly, and can provide enough bandwidth to properly capture streamed data, and is cost-effective, requires one that falls between fast industrial card capabilities and slower commercial ones. Bandwidth in the range of 50 MB/sec for writes and 80 MB/sec for reads are typical and sufficient for microSD cards deployed within surveillance cameras. Temperature ranges Lower capacity support of 32GB can provide room to attract the smaller or entry-level video surveillance deployments As microSD cards must be designed for continuous operation in extreme weather conditions and a variety of climates, whether located indoors or out, support for various temperature ranges are another consideration. Given the wide spectrum of temperatures required by the camera makers, microSD cards deployed within surveillance cameras should support temperature ranges from -25 degrees Celsius to 85 degrees Celsius, or in extreme cases, as low as -40 degrees Celsius. Capacity Selecting the right-sized capacity is also very important as there needs to be a minimum level to ensure that there is enough room to hold footage for a number of days or weeks before it is overwritten or the connectivity to the NVR is restored. Though 64GB is considered the capacity sweet spot for microSD cards deployed within surveillance cameras today, lower capacity support of 32GB can provide room to attract the smaller or entry-level video surveillance deployments. In the future, even higher capacities will be important for specific use cases and will potentially become standard capacities as the market evolves. When choosing the right storage microSD card to implement into your video surveillance system, make sure the card is designed specifically for the application – does it include the right levels of endurance and performance to capture continuous streams – can it withstand environmental challenges and wide temperature extremes – will it enable preventative and preemptive maintenance to provide years of service? It is critical for the surveillance system to be able to collect video footage whether the camera is connected to an NVR or is a standalone camera as collecting footage at the base of the surveillance system is the most crucial point of failure. As such, failsafe mechanisms are required to keep the camera recording until the network is restored.

Enhancing video surveillance data storage with active archive solution
Enhancing video surveillance data storage with active archive solution

By 2020, video surveillance using fixed, body and mobile cameras is expected to capture an astounding 859 PB of video daily. Increasing retention regulations and higher resolution cameras, are forcing the video surveillance industry to reassess its approach to data storage. Large capacity primary storage tends to be expensive to procure and costly to implement – especially without a sound architecture that can balance storage performance levels with the speed of access needed to recall video footage. Active archive strategy These challenges are thrusting storage tiers to the forefront of system design. Storage tiers in video surveillance had previously meant simply using a separate archive or attaching add-on capacity directly to network video recorders. Many of the new storage options designed for video surveillance are pulling together different storage tiers into a single storage architecture Many of the new storage options designed for video surveillance are pulling together different storage tiers (and in some cases storage media) into a single storage architecture, such as an active archive solution. This balance can be achieved with an active archive strategy that automates migration of data between different storage types, to ensure the data is on the correct storage type at the correct time to meet performance and retention requirements without blowing the budget. This approach also ensures ease of access while automatically moving content from more expensive tiers of storage to more cost-effective long-term tiers of storage. This allows for greater efficiencies in how recorded footage is treated throughout its lifecycle. In some cases, it includes moving data from edge devices to centralised storage, and then to the public cloud. Scalable video storage solutions As storage demands have increased, video management vendors have turned to storage specialists for solutions that can accommodate large numbers of high-resolution video files, metadata associated with the footage for easy searching, along with much needed scalable solutions. In terms of video management software, this means the integration of video content from different storage types, tiers and physical locations is required, and which considers the performance profile of each storage type. With an active archive solution, video content is searchable and accessible directly by the end users regardless of where it is stored. Deploying an active archive solution enables surveillance users to reduce the complexity and costs of managing data for long term retention As seen in many product categories, camera and storage vendors continue to provide extremely competitive offerings. But, storage-specific solutions for video surveillance have lagged behind the roadmaps for video equipment and, as more and more cameras have entered the market, less attention has been placed on video storage capacities. Tiered storage strategy The surveillance industry has evolved considerably from the days of the 8mm video recorder; however, enterprise storage solutions will be forced to evolve further to cope with changing storage retention requirements. Video storage is quickly becoming one of the most expensive parts in a surveillance solution, but there is hope. Deploying an active archive solution will enable surveillance users to reduce the complexity and costs of managing from terabytes to petabytes of data for long term retention. By finding a storage solution that delivers the ability to implement a tiered storage strategy, users can adhere to regulation requirements to retain video footage and meet their safety and security objectives, while also significantly reducing storage costs and operational expenses.

Video surveillance must modernise in storage, recording and on-demand access
Video surveillance must modernise in storage, recording and on-demand access

Dollars spent by video surveillance customers must go towards ensuring high-availability capture, storage and on-demand access to live and archived video. Reaching this goal mandates high-availability of independent components – camera, network, storage (edge, external), internet connectivity, display, all Video Management Software (VMS) components and an architecture that can take advantage of this. In this note, we focus on seeing our way through to a video surveillance architecture, that provides high availability storage, access to live and stored video content. Of all options available to store recorded video, edge recording is the only one that is unaffected by network failure Edge recording Of all options available to store recorded video, edge recording is the only one that is unaffected by network failure. This makes edge storage a must-have. But, this has some limitations at present: Edge storage capacity is limited. Edge media has a short lifetime, rated only for thousands of hours of continuous recording. Most cameras are not secure and physical damage to the camera could lead to catastrophic loss of edge stored content. As storage and compression technology evolve, the constraints imposed by (1) and (2) could go away. However, securing cameras will continue to be a barrier for most installations. Secure external storage It is thus imperative to also store video in secure external storage. Such an architecture uses edge storage to fill in content gaps created by network, external storage outages. As edge storage technology improves, larger gaps can be filled in, but one will always need external storage. By our definition, ‘external storage’ is a solution stack that includes storage media and all software (including VMS) that provide access to this storage. Access to live and archived video Access to live video can either be met by external storage or directly by the camera Every surveillance solution needs to provide access to live and archived video. Access to live video can either be met by external storage or (and) directly by the camera. All things being equal, having the camera directly provide live video access, is a higher-availability solution. There is dependence on fewer components in the chain. Solutions in the market use one of the above two approaches for access to live video. Due to limited capacity and low physical security of edge storage, it makes sense at present, to have external storage meet all requests for archive video. Thus, we are led to an architecture that has heavy dependence on external storage. Dual-recording For high-availability, external storage must be architected with redundancy. Ideally, independent components that make up external storage – storage media, associated hardware and software (including VMS components), should be individually redundant and have smart interconnectivity. However, solutions in the market rigidly tie these components together. Failure of a single component causes failure of external storage. For e.g. hardware failure of a server causes VMS component failure AND storage failure. DR provides a smart way to provide high-availability for external storage For these solutions in the market, high-availability is achieved by having additional external storage units that step-in during outages of primary units. If these additional units continuously duplicate primary units, access gaps are minimised, and archive access is un-affected during primary unit outages. This is the idea behind Dual-Recording (DR).  To meet cost budgets, these additional units can be configured to store subsampled (framerate, resolution) video content. A small number of additional units can support concurrent outages of all primary units. A few-to-many redundancy. Rising need for dual-recording Most cameras cannot be physically secured, and video content produced by a camera must be stored externally. Many VMS solutions use external storage to service live video access requests. Edge storage limitations impose restrictions on edge archive access at present. So, external storage is used to service requests for archive access too. Thus, a surveillance system ends up being over-dependent on external storage. DR provides a smart way to provide high-availability for external storage. As edge storage improves, it will be able to service archive access requests. VMS software will need to evolve, to use this capability smartly.