Effective storage of surveillance footage

CCTV Handbook 2014 Surveillance

Storage models have to be able to cope with both the sheer volume of surveillance footage acquired as well as ensure its integrity and accessibility. While there is still a place for DVRs and NVRs in the foreseeable future, this is destined to make way for options like SSD or edge storage.

Graham Goldridge, regional sales director for MEA, UK and France, says that as a software company NUUO offers both Windows and embedded Linux NVRs. The Linux offering can take on-board a maximum of 32 TB of storage, but the company does understand that the system integrator requires additional storage, so they then adopt ISCSI/SAN/DAS using EMC, HP and Proware for example.

According to Brian Wynberger, national technical manager at Reditron, the use of different storage formats is very market/application driven. The largest portion of the market is still using DVRs and NVRs, with larger drive capacities like 3 and 4 TB becoming available, they gain the advantage of longer periods of storage. For larger systems, the trend is to use the storage array to store all video images. This option is becoming more attractive as hard drive capacities increase at reduced prices.

Bruce Askham, surveillance and forensic security manager at Dell says that the size of an installation as well as the resolution of the cameras will play a large determining role in the need for DVR/NVR as opposed to alternative storage mechanisms. He adds that the retention period of data and the frame rates required will also influence the choice of storage.

Nigel Steyn, subject matter expert for EMC, says that for the meantime, while the South African government is not imposing regulations concerning the adoption of megapixel cameras, it is still acceptable to use DVRs and NVRs for storage in small to medium sized installations of CCTV, whilst the larger enterprise installations are best suited to EMC Isilon architectures. However, as megapixel cameras gain popularity, their bandwidth greedy nature will require alternative methods of storage.

Arrays designed for video

Wynberger points out that traditional storage array suppliers make their standard products available for use in CCTV systems. It is however up to the CCTV manufacturer to make sure these are integrated into the storage/recording management software for use in a CCTV system. There are companies like Promise that are providing storage arrays more specifically for the video industry and more CCTV suppliers are including storage arrays or NVR/servers with a larger number of hard drive bay capacities in their portfolios.

Steyn believes that the DVR manufacturers are putting less effort into upgrading their products as these will eventually become obsolete. Products like EMC’s Isilon are providing a suitable alternative for easily deployable surveillance footage storage.

Askham says that some of the traditional video management solution (VMS) companies are collaborating with hardware developers to find workable solutions for the security surveillance industry.

With regard to software management in storage offerings, Askham says that this is not so critical if you are using a good VMS, as the system will already be handling and manoeuvring data. Steyn agrees that storage offerings should not need to offer management capabilities as the CCTV system should be doing this. To reduce costs on systems, manufacturers are looking at ways of removing some of the non-essential technology such as reduplication capabilities.

SSD hardware is costly

Askham says that the benefit of SSD (solid state disks) for storage is that they are incredibly fast. However, cost is a factor and for the interim, a multi-tiered approach with VMS coupled with SSD for specific applications, will have to suffice.

Goldridge says that NUUO does not use SSDs locally since they find that the Seagate SV35 Series or the new Seagate Constellation HDD for surveillance is best suited for reading and writing for video.

Wynberger continues that the capacities of these SSDs are too low for use in CCTV applications. SSD would be useful for specific applications and small systems like mobile applications where robustness of storage is important.

He adds that edge storage will reduce the number of physical DVR/NVRs being used in the system. With large capacity arrays it makes storage close to the source of the video more feasible, in combination with good VMS software.

Wynberger believes that for many sectors of the market there is still the question of costliness of storage arrays over that of DVRs and NVRs. There is also the question of redundancy. Most DVR/NVRs in a system offer better redundancy than a single edge storage solution for all video. Edge storage by nature provides protection against failure but this comes at a price.


NUUO, +27 (0)11 475 3254, [email protected], www.nuuo.com

Reditron, +27 (0)87 802 CCTV(2288), [email protected], www.reditron.co.za

Dell, +27 (0)11 549 4035, [email protected], www.dell.co.za

EMC, +27 (0)11 581 0000, [email protected], www.emc.com


Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Pentagon appointed as Milestone distributor
Elvey Security Technologies News & Events Surveillance
Milestone Systems appointed Pentagon Distribution (an Elvey Group company within the Hudaco Group of Companies) as a distributor. XProtect’s open architecture means no lock-in and the ability to customise the connected video solution that will accomplish the job.

Horn speakers from Sunell
Forbatt SA Products & Solutions Surveillance Residential Estate (Industry)
Horn speakers are an effective tool for actively deterring intruders from entering estates. By emitting loud, clear audio warnings, horn speakers can alert trespassers that they have been detected and are being monitored.

Sunell’s range of thermal cameras
Forbatt SA Products & Solutions Surveillance Residential Estate (Industry)
Thermal cameras offer significant value to estate security. Their ability to provide reliable surveillance in all lighting and weather conditions ensures continuous monitoring, providing a constant sense of security and reducing the likelihood of security breaches.

Integrating radar and surveillance
Forbatt SA Products & Solutions Surveillance Residential Estate (Industry)
Integrating radar with CCTV video systems significantly enhances estate security by providing long-range threat detection and comprehensive monitoring capabilities. This combination leverages the strengths of both technologies, offering several key benefits.

Sunell anti-corrosion cameras
Forbatt SA Products & Solutions Surveillance Residential Estate (Industry)
With Sunell’s anti-corrosion range of cameras, the initial investment in anti-corrosion CCTV cameras may be higher than standard cameras, but the long-term benefits outweigh the upfront costs.

Latest AI solution to manage guards
DeepAlert Products & Solutions Surveillance AI & Data Analytics
No guard at the guardhouse? Guard under duress? Guard asleep? DeepAlert’s AI technology delivers real-time alerts to mobile phones and video management systems, helping you manage your guards more effectively.

Axis advanced radar system
Axis Communications SA Products & Solutions Surveillance Residential Estate (Industry)
The Axis D2210-VE also offers a radar-video fusion model, combining the strengths of both technologies to provide comprehensive monitoring and enhanced situational awareness.

ONVIF launches new working groups for cloud, metadata and audio
News & Events Surveillance
ONVIF, the global standardisation initiative for IP-based physical security products, is announcing the formation of three new working groups to tackle standardisation work in cloud connectivity, audio, and advanced metadata.

Dallmeier receives ISO 27001 certification
Dallmeier Electronic Southern Africa Surveillance News & Events
Dallmeier has received ISO 27001 certification for its Information Security Management System (ISMS). The international standard for information security management ensures that companies meet the highest standards of data protection and data security.

AI camera for all-around AI solutions
Surveillance Products & Solutions
VIVOTEK has expanded its AI security business with the AI entry-tier 9383-Series network camera, a cost-effective solution that allows users to easily recognise attributes of people and cars, thereby enhancing operation and management efficiencies.