Point of Sale Disaster Recovery setup

Tags:
Disaster Recovery
DNS
Network Load Balancing
POS
VIP
Hello all. I have a situation where our business needs to come up with a DR solution for our stores' registers. The company does its own transaction processing and uses a VIP to loadbalance connections from the registers. In the register, there is a file that points the register to the VIP address. In the event the processing server goes offline, we need the registers to be able to hit the secondary server at another site. We thought about changing the IP for the VIP in DNS but it took too long for the registers to recognize the new IP. Are there viable solutions that can be done to accomplish some form of DR with the registers?
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