The purpose could be to keep the family album accessible for a decade or two from a server in your room, it can be to log a temperature sensor in a remote Antar

The purpose could be to keep the family album accessible for a decade or two from a server in your room, it can be to log a temperature sensor in a remote Antarctic location for research purposes powered by solar cells and communicating with satellites once a week or it could be buried in an enemy state monitoring missile activity. One should consider power failures and recovery from them, temperature fluctuation and what kind of connectivity is needed. But generally, without giving us details, you are right- probably any server will do.