In principle, for the exchange of government information, it does pose a problem.
It does not have to have connection failure unless it is an attack by an enemy system entity.
Generally, it still provides a sytem altrernative similar to that in place kept in secret, in an area of low seismic risk, or generally innodation of natural hazards with a completely independent connection sytem running.
In the case, or it there's failure, it will automatically swing the second similar system and keeps the archive information