Unfortunately, we do not have concrete guidance around WAN Connectivity requirements when managing systems remotely with a centralized appliance. That being said, the biggest tax on WAN connections is going to be around firmware management. The ISO of the baseline is mounted via iLO Virtual Media, so throughput, and possibly latency, will affect the time it will take to install.
Have you measured the total throughput and average latency of your WAN connection? If so, can you share those values?
