I dont know if this has been discussed before...but,
I now and then are working with live VMS systems and sometimes I come across systems where the user/guard doesnt notice a camera is missing the recordings for some reason. There is live picture stream, so everything is allright. But one or two cameras is not being recorded and its not being noticed because they rarely do a playbak on them.
So here is a suggestion for when you/IPVM are testing VMSes.
How easy is it to see if all the cameras is being recorded? Asumed they shall record.
Is there a alarm function/window popup to notice the user is the camera for some unknown reason stops recording?
F.ex the Bosch BVMS is easy to see if there is missing recordings, goto Playback, zoom out to one month and see it there is motion/contineous lines for each camera.