Off Site Redundancy Recording Recommendations Requested

What VMS are you planning on using?   Genetec has a cloud archiving solution that would fit your needs. 

Could you use the video grooming feature in Milestone to drop the FPS to something more manageable and then ship that off to NAS offsite?

Check out Quantum, they have a great tape storage solution that is much cheaper for long term archiving.

http://www.quantum.com/solutions/video-surveillance/index.aspx

Can i ask what the number of camera's is ?

regardless of the brand you pick, there are issues with option of a backup from a local site to a remote site, when backing up the data, you then will utilize the max bandwidth of your infrastructure.  then you aren't talking about steams but simple data transfer PTP (Peer te peer) the limit will be the throughput at that stage. Depending on the total volume you will need to transfer you could balance out the throughput. Small side note: some manufacturers do not allow realtime backup's.

Dual recording can be a solution, but this is also depending on the number of camera's, When using H265+ you can limit you bandwidth and when recoding you second recording service in a lower resolution as well you soberly can manage, all depending on bandwidth, number, compression codec, settings etc.

Also a option can be the "P-Frame" or "mobile mode" (low bandwidth mode and is depending on the manufacturer), here you only send the part of the video that changing. Also called Advanced / PLUS/ Turbo or what ever name we all come up with) 

But all is depending on the products and quantities you have on-site

Hello

With Milestone you can put Archive database to a Synology Nas using iSCSI.

And then you can use an other NAS for replication or a cloud app like Cloudstation and store the files on the cloud.

That's theory. The size of the files and the bandwith consumption that will generate should be taken into consideration...

From the discussions so far this appears to be an Archiving solution requirement as opposed to a Real Time Redundancy solution.  That said it does make things a little simpler, but as discussed by Carlo, will likely add delays dependent upon Network availability and the fact many Archive solutions are based upon transfer of given data block sizes and not Streaming.

When looking for archiving, check for Scheduling capability, this often allows better management of Network Access to allow archiving to occur at "Off Peak" business use times.  It really is a trade off between WAN costs/availability and the closeness to a real time transfer.

Having an Archive solution where the VMS is aware of all "Archived" data is also imperative, simply copying data to alternate storage sets will often leave data potentially orphaned off the primary VMS database or difficult to access, so chose a solution where the VMS/NVR manufacturer handles this and dont be swayed by the input of cavalier IT managers - We are in a dynamic data business not simply document read/writes.

Remote data backup aside, if the data is of such importance we must also consider Primary site high availabilty of the NVR by using 1:1 or 1:n failover for NVR and any requisite archive management servers (ideally chose an NVR with built in archiving that does not rely upon an archive manager).

And of course always remember that Archiving data from an NVR will utilise outbound data throughput and disk read throughputs, so you may find that you need to scale your NVR/Camera designs to meet these requirements.

And finally, ask your customer what is really important, it may be only a fraction of the cameras need to be archived which ultimatly can bring a solution closer to being achievable. 

We have done a couple of these over WAN and it is complicated but doable but you need to consider the following few points:

- Is your client looking for redundant recording( recording the same camera at two different locations in case one of the recorders fails) or back up( record on one recorder and make a copy of the video stored on it)? Redundant recording protects you from losing any video while back up protects only the video already recorded and you will not capture any video while the recorder is not operational.

- There is complicated networking involved to do it securely(cyber security) and you need to have IT/network engineers on staff or partner with an IT company to help you out.

- It does require a lot of bandwidth but with the latest compression technologies( ZipStream, WiseStream, etc) it had gone down significantly.

- Cost for the second location - is it the client's facility or you need to utilize a data center? In any case, you need to factor any bandwidth and hosting costs.

Hope this is pointing you in the right direction.     

This does help to narrow it down further for me. 

 Thank you!