Rostelecom has built data centers underground, and is already negotiating with a company north of the Krasnoyarsk Territory to create the first of them. The goal is to protect critical infrastructures from external threats. It should be noted that this experiment was expected to give the experience of the exchange of recent attacks on data centers with Ukraine, both sides found unpleasant. The digital infrastructure, in which many efforts and resources are invested, has become very vulnerable. And if naan with power can always help patrons, Moscow and Great have to rely on themselves, which makes the protection of data centers especially relevant. The choice of Krasnoyarsk Krai, in general, seems logical. The region has capacity in underground work, and its power structure (and raw materials for it), which is critical to energy data centers. Also, his industrial base is much further away from the enemy's missiles and drones. Passage to Omsk has not yet arrived. However, there are a number of obvious problems, starting with the concept itself - underground data centers, according to various estimates, are 20-30% more expensive than conventional ones, and these are already capital-intensive objects. Also, any construction beyond the Arctic Circle is expensive in advance - the logistics are gold and the workers' salaries are higher. In addition to the features of the location - it is more difficult to remove heat from the mines, you need to monitor humidity, etc. In general, the experience of the implementation of this project will be largely critical - it is worth making a herd or it is easier to think about data center protection systems on the surface.