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What operating system is your CCTV DVR running? &nbsp;Crahsplan <a href="https://www.code42.com/crashplan/" rel="ugc">https://www.code42.com/crashplan/</a>&nbsp;offers free computer to computer backups across the Internet if your DVR is a standard Windows or Mac computer. &nbsp;May even to Linux too but, not sure. &nbsp;Here is a feature list for both free and paid versions.<br />
<a href="https://www.code42.com/crashplan/features/compare/" rel="ugc">https://www.code42.com/crashplan/features/compare/</a>
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What operating system is your CCTV DVR running?  Crahsplan https://www.code42.com/crashplan/ [https://www.code42.com/crashplan/] offers free computer to computer backups across the Internet if your DVR is a standard Windows or Mac computer.  May even to Linux too but, not sure.  Here is a feature list for both free and paid versions.
https://www.code42.com/crashplan/features/compare/ [https://www.code42.com/crashplan/features/compare/]

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What offline REALTIME &quot;CCTV&quot; Video Surveillance <br />
backup do you recommend based on the below specs ?<br />
&nbsp; ** 20 cameras<br />
&nbsp; ** 100 Mbps Internet<br />
&nbsp; ** currently writing to local NAS<br />
<br />
Mabye something like <br />
<a href="http://www.zoolz.com/in-action-cctv" rel="ugc">http://www.zoolz.com/in-action-cctv</a>&nbsp;or<br />
<a href="http://videos.cctvcamerapros.com/support/topic/surveillance-dvr-with-automated-off-site-video-backup" rel="ugc">http://videos.cctvcamerapros.com/support/topic/surveillance-dvr-with-automated-off-site-video-backup</a>&nbsp;<br />
to one of my other offices 100+ miles away, <br />
therefore avoiding the CLOUD costs
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What offline REALTIME "CCTV" Video Surveillance 
backup do you recommend based on the below specs ?
  ** 20 cameras
  ** 100 Mbps Internet
  ** currently writing to local NAS

Mabye something like 
http://www.zoolz.com/in-action-cctv or
http://videos.cctvcamerapros.com/support/topic/surveillance-dvr-with-automated-off-site-video-backup 
to one of my other offices 100+ miles away, 
therefore avoiding the CLOUD costs

Video Surveillance -- offline REALTIME backup ?

Home security includes the hardware and software in place to monitor and protect property, and personal security practices. The hardware can include the doors, locks, alarm systems, lighting, motion detectors, and cameras systems; the software can include applications connected to smart systems in your home or business or electronic surveillance systems provided by vendors. Personal security practices would be ensuring doors are locked, alarms activated, windows closed and many other routine tasks which act to prevent misfortunes.

Home Security

A digital camera or digicam is a camera that encodes digital images and videos digitally and stores them for later reproduction. Most cameras sold today are digital, and digital cameras are incorporated into many devices ranging from PDAs and mobile phones (called camera phones) to vehicles. Digital and film cameras share an optical system, typically using a lens with a variable diaphragm to focus light onto an image pickup device.  Digital cameras can display images on a screen immediately after being recorded, and store and delete images from memory. Many digital cameras can also record moving videos with sound. Some digital cameras can crop and stitch pictures and perform other elementary image editing.

Digital Cameras / Camcorders

Security is the protection of information systems from theft or damage to the hardware, the software, and the information on them, as well as from disruption or misdirection of the services they provide. The main goal of security is protecting assets, and an asset is anything of value and worthy of protection.  Information Security is a discipline of protecting information assets from threats through safeguards to achieve the objectives of confidentiality, integrity, and availability or CIA for short. On the other hand, disclosure, alteration, and disruption (DAD) compromise the security objectives.