[RetailEdge Moderator]

It is our recommendation that the data server be on the primary register machine. The simple reason is that if the network goes down for any reason, the client on that machine can continue to access the data and you can continue to make sales.

There are reasons why you might not want this configuration and internal networks are more stable and reliable than they used to be. However, by not having the data on the main register you run the risk that you will not be able to ring sales in on this machine.