What is SDC?

Sofia Data Center (SDC) is the brand under which the global telecom operator Neterra provides services in its four data centers: SDC 1, SDC 2, SDC Stolnik, and SDC Ruse. We offer high-quality services for demanding clients - we have available space and power, redundant power supply and cooling, competitive prices in our world-standard ISO and PCI DSS certified data centers in different locations, excellent connectivity. 

Where are SDC's data centers located?

SDC operates in Sofia, Bulgaria - strategically positioned at the crossroads of Europe and Asia. Our facilities are directly connected to most of major international tier I carriers and Internet exchanges, making us a prime hub for global connectivity.

What certifications do SDC data centers hold?

Our data centers meet strict international standards, including PCI DSS, ISO/IEC certifications and TIER III design principles. These certifications ensure reliability, security, and compliance for mission-critical IT operations.

Who owns and operates SDC?

SDC is owned and operated by Neterra, a global telecommunications and IT services provider with 30 years of experience in building world-class connectivity infrastructure.

Why you should choose colocation?

One of the main reasons why more and more companies are opting for colocation services is the large amount of investment that is required to build and operate a data centre of your own. Due to the continuous development of our professional colocation services, the advantages outweigh the potential disadvantages of outsourcing the data centre in almost every scenario. Thanks to redundancy and optional backup locations your critical data is optimally protected and always accessible.

What is colocation?

Colocation means storing your servers and IT equipment in a professional data center instead of in-house. At SDC, you benefit from secure facilities, redundant power and cooling, high-speed connectivity, and 24/7 monitoring and professional support without the cost of building and maintaining your own infrastructure.

Which colocation services does Neterra provide?

• Colocation of rack/footprint, Dedicated compartment of a rack (½ rack, ¼ rack), Colocation of server (rack unit), Colo cage, Colocation for crypto miners (Basic colo), etc.
• Hands on site
• 24*7 Network Operations Center (NOC) - a centralized location where computer, telecommunications and satellite networks systems are monitored and managed
• In-house cabling/cross connect, etc.
• Data center transfer – Neterra will move colocation customers from other data centers to one of the Neterra`s data centers
• Rack-and-stack installation service
• Dedicated room for colocation and tailor-made solutions

What colocation options are available?

SDC offers flexible colocation solutions:

• Shared colocation – rent space for single servers or units
• Private racks – full, lockable racks for your exclusive use
• Custom cages or suites – dedicated spaces tailored for enterprises with larger infrastructure needs.

What is the difference between private rack and shared colocation?

Shared colocation is cost-effective, ideal for smaller setups. You rent space and power you need in a shared rack.

Private racks provide dedicated racks with higher control, security, and scalability for larger deployments.

Which rack sizes does Neterra provide?

• SDC 1 - Standard Rack Size – 19", 600mm x 1000mm x 2105 mm (WxDxH), 45RU.
• SDC 2 - Standard Rack Size 19", 600mm x 1000mm x 2105 mm (WxDxH), 47-52RU.
• SDC Stolnik - Standard Rack Size 19", 600mm x 1000mm x 2105 mm (WxDxH), 47RU.
• SDC Ruse - Standard Rack Size 19", 600mm x 1000mm x 2105 mm (WxDxH), 42RU.
• ¼ rack provide dedicated compartment of a rack with 10RU. Standard Size – 19", 600mm x 1000mm x 2105 mm (WxDxH). 
• ½ rack provide dedicated compartment of a rack with 21RU. Standard Size – 19", 600mm x 1000mm x 2105 mm (WxDxH).
• Different rack sizes and heights are available

What is included in a standard rack?

• Standard rack comes with:
• two power supply lines (A+B) 
• two PDUs with contact sockets type IEC 320 C13 and C19  
• power supply 400V/230V AC or -48.0V DC;
• two autonomous individual connections to MMRs. 
• Customers have to bring everything needed in the rack.

How can I request on-site services?

You can request on-site assistance (such as equipment checks, cable management, or hardware restart) through our hands-on-site service. Simply contact our 24/7 support team and we will help.

Ready to colocate with us? Request a quote on contact@neterra.net today and our team will help you find the best solution.

What connectivity options does SDC offer?

SDC provides a wide range of connectivity options, including Internet access, IP transit, point-to-point connections, data center cross connect and access to Internet Exchange platforms. Our network is designed for high capacity, low latency, and maximum reliability.

Is SDC carrier-neutral?

Yes. SDC is a carrier-neutral data center. This means you are free to choose your connectivity provider.

What is NetIX, and how is it related to SDC?

NetIX is a global Internet Exchange platform created by our parent company, Neterra. Through SDC, you can connect directly to NetIX and peer with hundreds of networks worldwide, improving performance and reducing costs for international traffic.

Can I connect to international networks through SDC?

Absolutely. SDC is directly connected to major international carriers and Internet exchanges, enabling fast and secure connections to Europe, the Middle East, Asia, and beyond.

Explore your connectivity options and get in touch with our team on contact@neterra.net to design a solution tailored to your business.

What power options are available for colocation clients?

SDC provides scalable power options tailored to your equipment requirements. Whether you need standard power per unit, full racks with dedicated circuits, or high-density solutions, we deliver reliable and redundant electricity to support your infrastructure.

Is the electricity redundant and backed up with UPS/generators?

Yes. Our TIER III compliant facilities are designed with full redundancy. All critical systems are supported by UPS (Uninterruptible Power Supply) and backed up by diesel generators, guaranteeing continuous operation even during power outages.

How is power usage measured and billed?

At SDC, you can choose between two billing models:

Metered – pay only for the electricity you consume.

Committed – a flat-rate option with a forecasted by customer power allocation per rack.

This flexibility allows you to optimize costs based on your infrastructure and usage patterns.

 Not sure which model is right for you? Contact us on contact@neterra.net and our team will guide you.

Can I get higher power density per rack if needed?

Yes. We can provide up to 14+ kW per rack to support demanding infrastructures such as HPC, cloud environments, or large storage systems. Our team will design a custom solution tailored to your requirements.

Need a custom power setup? Request a consultation on contact@neterra.net and we’ll create the right configuration for your infrastructure.

What is the TIER III standard and is SDC compliant with it?

The TIER III standard defines high levels of availability, redundancy, and fault tolerance in data centers. SDC is built to meet TIER III requirements, ensuring uninterrupted operations with 99.999% uptime.

What cooling and power systems are in place?

SDC uses redundant cooling systems to maintain optimal temperature and humidity. Power is fully redundant, with dual feeds (A+B), UPS systems, and diesel generators supporting continuous uptime.

How is physical security managed at SDC?

Security is a top priority. Our data centers feature 24/7 surveillance, biometric access control, mantrap, security personnel, and restricted zones. All visitors are logged and monitored to ensure the highest level of protection.

Are there any eco-friendly initiatives at SDC?

Yes. SDC is committed to energy efficiency and sustainability. Our facilities use modern free cooling technologies, efficient power management systems, and green energy practices to reduce our environmental footprint.

What support services are available?

SDC provides 24/7 technical support, remote hands services, and proactive monitoring. Our experts are always available to assist with hardware issues, connectivity, and equipment management.

What is the response time for on-site support?

Our on-site engineers are available around the clock. Response times are immediate within the data center, ensuring fast resolution for urgent tasks or incidents.

How can I contact SDC for assistance?

You can reach us at any time on +359 2 975 16 16 or noc@neterra.net. Our support team is available 24/7 to ensure your operations run smoothly.

Is remote hands support available?

Yes. With Remote Hands, our staff can perform tasks such as rebooting servers, cable management, hardware installation, or system checks on your behalf — saving you time and travel.

How is pricing determined for colocation services?

Pricing depends on the amount of space, power, and connectivity you require. We provide flexible packages - from single units to full racks and custom cages so you only pay for what you use. Prices for single rack unit colocations start from 46E.

Is relocation of equipment available?

Yes. If you need to move your servers or equipment to our data center, SDC offers professional relocation services. This is a paid service, carried out by our on-site engineers to ensure safe handling of your infrastructure.

Can Neterra install my hardware?

Yes, Neterra can offer both Rack-and-stack installation service (initial installation) and Hands on site works (24x7 professional support) including restarting the equipment, checking the physical connection between two devices, plug in/out cable to a corresponding port on the customer's equipment, labeling the customer's equipment or cabling, switching on/off power cable to customer's equipment, examination and reporting status of customer's equipment/light indicator, replacement of defective unit or mounting of a new on client`s equipment in the colocation rack. 

Hands on site fee is charged on 30-minute periods. If you go over 30 minutes, we will charge you an additional remote hands fee. For example, if it takes us 40 minutes to do the work, we will charge you for two 30-minute periods.

What is the minimum contract duration?

Our colocation services typically start with a 12-month contract, but we also offer flexible terms to meet specific project or business needs.

Are there any discounts for long-term commitments?

Yes. Clients who choose longer-term agreements benefit from reduced rates and additional savings. We reward partnerships that are built for the long run. You can request a quote directly through our online form or on contact@neterra.net.

How can I request a quote?

You can request a quote directly through our online form or on contact@neterra.net. Just provide details about your space, power, and connectivity needs, and our team will prepare a tailored proposal.

Can I schedule a site visit?

Yes. We welcome clients to visit our facilities. A guided tour lets you see our infrastructure, security, and environment first-hand. Contact us on contact@neterra.net to schedule your visit at a convenient time.

Take the first step - request your quote, book a tour today or visit us online on https://videotour.sdc.bg/