Rostelecom built underground data centers: Data centers in Russia will go underground. "Such facilities are considered the most secure because they have three levels of protection. The first level involves creating a backup site where copies of data are located in case of damage to the main infrastructure. The second level is related beyond distributed architecture: computing power and services are proposed to be located on several geographically dispersed sites. The third level includes the deep location of data centers, taking into account the most serious threat scenarios. The location of data centers at the Billu coal mines will help support the coal industry and increase the facility's security level. Tag: Pool N3/MAX.