OPC DA Redundancy

I have a pair of redundant Ignition gateways that I would like to connect to a separate pair of redundant OPC DA servers. So this is a total of four servers. The OPC DA servers do not have a way to offer any kind of redundancy on their own. What are my options for connecting from Ignition to these OPC servers. I just need something that works. It doesn’t have to be elegant, as this will be a temporary solution.