Our Data Center

State Of The Art Infrastructure


  • S3 Data Center is Tier 3+ Carrier Neutral Data Center located in the heart of Sofia on a cross-road of many Bulgarian and International telecom networks.
  • The datacenter provides 24x7 on-site customer support and system monitoring. The customers have 24x7 access to their colocated equipment.
  • S3 Data Center is ISO:9001 Quality Management System and ISO:27001 Information Security System certified.
  • When the downtime is not an option, the fully redundant S3 Data Center is the perfect place to collocate the critical for the operability of your business servers and related hardware.


  • Tower Server/Desktop PC
  • Unit(s) in shared Rack
  • ¼ Private Rack
  • ½ Private Rack
  • Private Rack(s)
  • Footprint(s)
  • Private Cage(s)
  • Private Suite(s)
  • Antenna(s) field/Roof-top equipment colocation

Technical Parameters

  • Redundant fiber optic connections with diverse physical paths
  • Diverse cable entries and Meet Me Rooms (MMRs)
  • Independent and alternative telecom and fiber providers
  • Additional security with lockable Racks and Cages
  • Redundant support systems
  • Completely independent (N+1) A and B UPS 220V AC power feeds
  • Completely independent (N+1) A and B 48V DC with starting configuration of 600Amps for each
  • A and B alternative Diesel Generators
  • VESDA – Very Early Smoke Detection Apparatus
  • FM200 – fire extinguishing agent
  • Redundant (N+1) Air Conditioning System with hot-and-cold row configuration
  • Individually accounted power consumption
  • Leak Detection System
  • Security with access control points and video monitoring?
  • Raised flooring
  • 24x7x365 on-site MSC
  • 24x7x365 customer access
  • 24x7x365 Hands and Eyes Services
  • 24x7x365 physical security

Security Policy

S3 Data Center is carrier neutral colocation center, providing a high level of information security. The customers benefit from the infrastructure, thereby reducing operational costs and eliminating the investment expenditures for colocatin facility to host their equipment. The redundancy of the datacenter, the quality control and the information security systems alow for 99.999% continuity of the services. To be able to protect sensitive information of our customers, we apply a number of means of physical protection and access control, which include 24/7 duty engineers, armed guards and constant surveillance of all areas. All working S3 Data Center were selected after a very thorough investigation in a major competition (1:1000), constantly developing their professionalism, ethical values and work habits with advanced training under constant control. S3 Data Center applies constant measures to ensure continued compliance and enforcement of applicable international standards, directives and legal requirements. Moreover, we have a voluntary registration in the Electronic Communications Committee. Thus we show the manner of European business ethics. Putting the customers at the foucs of our attention, we are intolerant to risk. We manage over 94% of all identified risks, we have taken the necessary safeguards, ensuring accessibility and confidentiality. Our goal is to be the first in the colocation business by constant introduction of new and advanced technologies and improvement of the management system with new and more effective safeguards. This is the understanding of our investors. This is the understanding of all of us. Thus we build confidence in all our customers for a high-grade services and competitive pricing. Your business is on a safer place with S3 Data Center.