Our company purchases through Hamilton Safe in Ohio. We have sold these DVRs to several financial institutions in our area. They are built great rack mountable and the ones we have out there are all networked. The customer has had problems with other DVRs and they love this one. (We installed one of the 4000 series) The only oddity I have found is there is a provisioning interface to setup the IP which is kind of odd. It is a serial interface and you use Hyperterminal in windows to set it up. Its easy enough to use, I just found it odd with the level of technology that it is. The user and setup software is great, very detailed. The unit itself is tough as nails.