Thats the question, how many cams and how long do you want to record?

Loads of variables there, also how big is the HD, or is it a VCR?

That's Fine, I only record at 2 FPS at home and results are decent quality recording and longer recording times.

How many cameras are being recorded and how many days continuos recording do they want.?

There will a total of 26 cameras split over 2 geovision systems one will run 16 cameras and the other will run the rest.

How big a hard drive should it have if on the 16 camera system we always want to have the last 30 days worth of recordings @ 12.5 fps available?

Edited July 16, 200619 yr by Ish

How big a hard drive should it have if on the 16 camera system we always want to have the last 30 days worth of recordings available?

How many FPS are you wanting to record at.?

Time for 800 gig and twin HD`s

How many FPS are you wanting to record at.?

12.5 fps

At 1FPS 500GB will record for 12.1 days (HQ 30Kb) -- dependant on record quality/technology.

At 12FPS 500GB will last 1 day at the same quality.

If the two recorders are going to be identical in size of hard drive and set up etc then it may be wise to split the inputs between them evenly.

At 1FPS 500GB will record for 12.1 days (HQ 30Kb) -- dependant on record quality/technology.

At 12FPS 500GB will last 1 day at the same quality.

From the course I've just been on with DM I now know that this simple sounding question is about to expand exponentially to the size of a regular universe,when discussing quality/time recorded in the same breath you have to consider the size of hard drive--the type of compresion--the preset fps---also is the unit set to vmd---has the system motion detection for recording---is the system set for a lower quality and frame rate for general recording then higher quality for vmd trigger or motion detection one type of compression only records changes in a data base frame perhapes 1frame in 9 over 5-6 secs another type records the whole frame each refresh whether there are changes or not.

The only way I can see to be certain you get what is required is an on site demo but that at the least is difficult coz you dont want an outsider mucking about with your existing system and of course there could be a data protection issue.

Its becoming more and more complicated !!!!!!!!.

Paul.

30 days at 12.5fps, your looking at big hd for that, lots of dosh.

I aggree to the above regarding 13 inputs on each instead !!! or at least an Internal / External Camera setup.

How are you Viewing recordings ??

Locally or remotely.

Possibly use a KVM switch between the two units to save a monitor??

What Software version is it?? I believe they are releasing version 8 soon ??

thinking about how long a second is i think 6 fps would be plenty.

it will be viewed locally and it will be softwrae version 8 as it is available now

I think I have found somewhere local that can give me a demo of the geovision stuff so i'll see how it goes.

Thanks all

Edited July 16, 200619 yr by Ish