Is your network redundant?
Yes but it’s up to you to decide how you wish to use this ability.
Most of our proxies are redundant either because we multiply SIM cards, either because we multiply hosting locations.
In some small countries where demand is low, we only provide one SIM / node on one server. This is OK because a big majority of our hosting locations have 99% UP time. The only issue you may encounter is a capacity shortage or a slower speed when the data plan has been used up.