Our servers are hosted at the Greenergy Datacenter GDC1 in Tallinn, Estonia. This is the largest and most modern datacenter in the Baltics, and is certified with ISO27001, ISO9001, and EN50600 certificates, ensuring high standards of security and quality.
Structure
The Greenergy DC is situated less than 15 km away from Tallinn city center in a geographically secure area, away from any potential threats such as traffic, riots, flooding, wildfires, or industrial facilities. It is located at an elevation of 43 meters above sea level.
Cooling
The Greenergy DC in Estonia utilizes the cool Nordic climate and precision cooling systems, eliminating the need for additional cooling equipment. The cooling systems use low GWP refrigerants and are comprised of independent cooling modules with chiller and dry coolers, as well as reserve chilled water tanks. The Computer Room Air Handler (CRAH) units are located outside the Private Suite and incorporate AI cooling optimization. The data halls have uniform air velocity and cold aisle pressure controls, with cold and hot aisle separation and monitoring. Currently, there are three 135kW CRAH units (N+1) configured with a maximum flow rate of 30600 m3/h per CRAH unit.
Electricity
The Greenergy DC has a dual electrical power feed connection with two 110 kV AC connections from Elering's Harku substation. The substation has two 330 kV AC connections, six 110 kV AC connections, and a DC connection with Finland through ESTLINK-1. The electrical infrastructure and management system is provided by SIEMENS. There are two 110/20 kV transformers with a capacity of 31.5 MW, and 11 distribution dry transformers with 20 kV. In addition, there are 11 generators from SDMO with a capacity of 1650 kVA to 3500 kVA, and two 100,000-liter fuel tanks with redundant fuel lines. The data rooms have redundant and modular UPS with A+B feeds.
Networking
Greenergy Datacenter (GDC) has multiple fiber cable systems connecting it to major internet access sites in Estonia. GDC is operated under the autonomous system AS206804 (EstNOC-GLOBAL) by EstNOC OY. The network is redundant and has partnerships with various companies including Tele2 Estonia, Mediam Finland, GleSYS/Portlane Sweden, Netronik Polska, Farice Iceland, NOVA Iceland, Lumen (Level3), Hurricane Electric, SG.GS, Abovenet TW, and many others.
Tele2 Estonia is connected to the ultra-low latency Baltic fiber network called the Baltic Highway, which was launched in 2014. It is also connected to Tallinn Internet Exchanges TLLiX and RTIX. The Baltic Highway uses optical fiber laid over high-voltage electricity lines and gas pipelines belonging to energy companies involved. This provides an advantage in terms of reliability since utility infrastructure is better protected from being accidentally dug up by construction work, which is the main cause of cable breaks. The network connects Tallinn in Estonia with Frankfurt in Germany via Riga (Latvia), Vilnius (Lithuania), Warsaw (Poland), and Berlin (Germany), covering a distance of 3000 km. There are onward connections to Saint Petersburg in Russia via 100G and Belarus via 10G links. The network boasts 35ms latency from end to end, capacity of 100G per channel, and 9.6 Tb/s of total throughput, according to Data Logistics Center, one of the three partners in the project.
Security
The security of your assets at GDC is taken seriously and is ensured by several measures. The premises are guarded by on-site security personnel round the clock, and there are multiple perimeter defence solutions in place, including 2D security fencing and intelligent surveillance cameras with motion sensors, thermal imaging, and forensics for fast analytics. The access gates and road stops are managed 24/7 by security personnel, and even if someone manages to slip past the outer perimeter, they will be stopped by additional security measures such as access-controlled doors and mantraps with multi-factor authentication, as well as various AI monitoring systems.
