Does South Africa have any data centres?

Yes. South Africa has a substantial data centre market, with most capacity in Gauteng, around Johannesburg and Midrand, and in the Western Cape, around Cape Town. It includes large colocation campuses, enterprise facilities and the local cloud regions of Microsoft Azure, AWS and Google Cloud, so organisations can keep their data in the country.

What services does a data centre provide?

A data centre provides space, power, cooling, network connectivity and physical security for computing equipment. Colocation facilities add cross-connects to carriers and clouds, remote hands and monitoring; cloud and managed data centres add rented servers, storage, backup and disaster recovery. Together these let an organisation run systems around the clock without building its own facility.

What are the four main types of data centres?

The four main types are enterprise (on-premises), colocation, hyperscale or cloud, and edge data centres. Enterprise facilities are owned and run by one organisation; colocation facilities rent space and power to many; hyperscale facilities deliver cloud services at vast scale; and edge facilities are small sites close to users or machines. Modular designs can serve any of these roles.

What is colocation in a data centre?

Colocation in a data centre means renting space, power and cooling in a facility someone else operates, for servers and network equipment you own. The operator runs the building, security and carrier connections; you run the hardware and software. It suits steady workloads on owned hardware, and data that must stay in South Africa, when your own building cannot give servers the power, cooling and security they need.

What is the biggest use of data centres?

The biggest use of data centres is running the applications, websites and data that organisations and online services depend on, most of it now delivered as cloud services. Data centres also hold backups and disaster recovery copies, and AI workloads increasingly shape how new facilities are designed, because GPU servers need much denser power and cooling than ordinary servers.

What is a tier 3 data centre?

A tier 3 data centre is concurrently maintainable: any component, or any power and cooling path, can be taken out of service for maintenance without shutting down the IT equipment. It is the third of the Uptime Institute's four tiers and suits most business-critical systems. Tier IV adds fault tolerance, surviving any single failure without affecting IT equipment.

Data centres in South Africa: colocation, cloud and on-premises

Last reviewed: September 2026

A data centre is a secure facility that houses servers, storage and network equipment with the power, cooling and connections to keep them running. This guide explains how organisations choose a data centre in South Africa, comparing colocation, cloud and on-premises options, costs and risks. Arke Technologies designs and manages systems in all three from Johannesburg.

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Data centres in South Africa: colocation, cloud and on-premises

Last reviewed: September 2026, 17 min read

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What is a data centre? Meaning and definition

A data centre is a building, or a dedicated room inside one, designed to run computing equipment around the clock. It gives servers what an ordinary office cannot give them reliably: clean, backed-up power; cooling that removes the heat they produce; connections to network carriers and the internet; and physical security that keeps out anyone without a reason to be there.

What are data centres used for? Almost everything an organisation runs beyond the laptop: finance and ERP systems, file and email servers, websites and citizen or customer portals, databases, backups and, increasingly, AI models. Every cloud service runs in someone's data centre, so the real question is whose, and for which systems.

Which spelling is right? "Data centre" is the British and South African form. American English ends the word in "-er", and Microsoft writes it as one word in the name of its Windows Server Datacenter edition. All three spellings name the same thing. This guide is one of our insights on IT infrastructure.

A technician patches network cables into a switch in an open rack.

What sits inside a data centre: the infrastructure

Data centre infrastructure, often shortened to "infra", has two layers: the facility, which the building provides, and the IT infrastructure that the owner or the tenants install.

Power. A utility supply, uninterruptible power supplies (UPS) that bridge the seconds before generators start, diesel generators with fuel on site, and power distribution units (PDUs) in every rack.
Cooling. The cooling system for a data centre removes the heat the equipment produces: air handlers, hot-aisle and cold-aisle containment, and, for dense GPU racks, liquid cooling taken to the chip or to the rear door of the rack. Underwater data centres, still a niche, go further and let the sea carry the heat away.
Racks and cabling. Server racks are measured in rack units: 1U is 44.45 mm of mounting height, and 42U is the standard full-height cabinet (serverhub.co.za, September 2026). Structured cabling runs in trays above the racks or under a raised floor.
Network. Core switches, routers and firewalls, and a meet-me room where carriers' fibre enters the building and connects to tenants by cross-connect. Network and data centre design go together: more carriers in a building means more choice of links and routes.
Security. Perimeter fencing, guards, biometric access control, mantraps, CCTV and visitor logs.
Fire protection. Early-warning smoke detection and gas suppression that puts out a fire without water reaching the equipment.
Monitoring. Data centre infrastructure management (DCIM) software tracks power, temperature, space and assets, and shows where capacity will run out before it does.

The four main types of data centre

Four types cover most of the market, and most organisations use more than one.

Enterprise (on-premises) data centres
Owned and run by the organisation itself, from a server room to a purpose-built hall: the most control, and the most responsibility for power, cooling, security and staff.
Colocation data centres
You rent space, power and cooling and install your own servers. The operator runs the building; you own and manage the equipment.
Hyperscale (cloud) data centres
The very large facilities behind cloud platforms such as Amazon Web Services, Microsoft Azure and Google Cloud, where the building, power, cooling and many thousands of servers are designed and run together, as if the whole data centre were a single computer, and capacity is rented out as cloud services.
Edge data centres
Small facilities close to where data is created, down to a micro data centre: a self-contained cabinet with its own power, cooling and fire protection at a mine, factory, hospital or branch. Modular data centres, built in prefabricated units or shipping containers, apply the same idea at a larger scale.

Two more terms cut across these types. A virtual data centre is a pool of virtual servers, storage and networking that a provider runs and you manage as if it were your own. An AI data centre is a facility, or a hall within one, built for the power and cooling that GPU servers need, which is far more per rack than ordinary servers draw.

Data centres in South Africa: where they are and what shapes the market

South Africa has a substantial data centre market. Most capacity sits in Gauteng, around Johannesburg and Midrand, and in the Western Cape, around Cape Town, with smaller facilities in Durban and other cities. The largest campuses are measured by the megawatts they can deliver to IT equipment rather than by floor space, and the ranking changes as new halls open, so which is the biggest data centre in South Africa matters less than whether a facility has the power, resilience and connections your systems need.

All three big hyperscale cloud providers run local regions: Microsoft Azure in Johannesburg, with Cape Town as its paired region; AWS in Cape Town; and Google Cloud in Johannesburg. So if you are asking whether there is a Microsoft data centre in South Africa, or a Google or Amazon one, the answer is yes: these regions let organisations use cloud services while keeping data in the country. Carrier-neutral colocation campuses host many of the country's networks, and South Africa's internet exchange points, where networks swap local traffic directly instead of routing it abroad and back, are housed in data centres in the main metros.

Three local factors shape every decision:

Power. Facilities ride through load-shedding and grid faults on UPS and generators, so diesel logistics, generator maintenance and fuel reserves count as much as the grid feed.
Data residency. POPIA section 72 restricts transfers of personal information out of South Africa unless conditions are met, such as the recipient being bound by laws or agreements that give adequate protection, or the data subject's consent. A South African facility or cloud region keeps that question simple.
Distance. Delay grows with distance, so users in Gauteng get quicker replies from a Johannesburg facility, and a Cape Town data centre makes a natural disaster recovery (DR) site for a Johannesburg primary.

Organisations that work across the continent often choose one data centre in Africa as the hub for several countries, subject to each country's data laws.

Colocation: what it is and how it works

What is data centre colocation? It is renting space in a data centre that someone else operates, for servers and network equipment you own. That is what colocation means in a data centre: the operator provides the building, power, cooling, security and access to carriers, and you provide and manage the hardware, operating systems and applications. Colocation, often shortened to colo, is the middle ground between your own server room and the cloud.

What you rent for colocation in a data centre:

Space, by the rack unit, the quarter or half rack, the full cabinet, or a cage for several cabinets.
Power, usually a committed amount per cabinet in kilowatts, and often the largest line on the bill.
Cross-connects, the cables from your cabinet to carriers, cloud on-ramps or other tenants, usually charged monthly per connection.
Remote hands, the operator's staff who reseat a cable, swap a drive or restart a server on your instruction.

What are colocation data centres best for? Steady workloads on hardware you own, systems that must stay in South Africa, and equipment that needs better power, cooling and security than your building provides. You avoid the capital cost of building a room to that standard, but you still buy, maintain and eventually replace every machine inside it.

Colocation vs cloud vs on-premises

	On-premises server room	Colocation	Cloud (public cloud or virtual data centre)
What you own	Hardware, room, power and cooling	The hardware; the operator owns the facility	Nothing physical; you rent capacity
Capital cost	Highest: hardware plus room, UPS, generator and cooling	Hardware only	None up front
Running cost	Electricity, fuel, maintenance and staff time	Monthly space, power and cross-connects	Usage: compute, storage and data transfer
Resilience	As good as your room, UPS and generator	Built to the facility's tier rating	Built into the platform, if you design across zones or regions
Scaling	Buy more hardware	Rent more space and power, and buy hardware	Add capacity in minutes
Best for	Systems that must sit on site, and small estates	Steady workloads on owned hardware	Variable workloads, new applications, disaster recovery
Watch for	Load-shedding, heat and physical security	Power limits per cabinet, contract terms, access logistics	Data transfer fees, cost sprawl, skills

Private cloud vs data centre is a false choice: a private cloud is a way of running infrastructure, not a place. Virtualised, self-service infrastructure dedicated to one organisation can sit in your own server room, in colocation or with a hosting provider. Most organisations end up hybrid, running some workloads in a public cloud, in effect a cloud-based data centre rented by use, and others on-premises or in colocation, chosen workload by workload; our guide to cloud computing explains the cloud side.

Tier ratings: what tier 1, tier 2, tier 3 and tier 4 mean

Facilities describe their resilience with the Uptime Institute's Tier Classification, and some use the similar Rated-1 to Rated-4 scale of the ANSI/TIA-942 standard.

Tier	Name	What it means in practice
Tier I	Basic capacity	A single path for power and cooling and no redundant components; maintenance means downtime
Tier II	Redundant capacity components	Spare UPS, generator and cooling units, but a single distribution path
Tier III	Concurrently maintainable	Any component or path can be taken out for maintenance without shutting down IT equipment
Tier IV	Fault tolerant	Withstands any single failure, of a component or a path, without affecting IT equipment

A tier 3 data centre, also written Tier III or tier three, suits most business-critical systems, because planned maintenance no longer means planned downtime; Tier IV is for systems where even a single failure must not interrupt service. Ask whether a rating covers the design, the constructed facility or its operation, since each is assessed separately, and ask to see the certificate.

What data centre services cost, and what drives the price

Last reviewed: September 2026

Data centre colocation pricing, cloud bills and the cost of a server room are built differently, so compare them over the same three- to five-year term.

Colocation. Space, committed power, cross-connects, remote hands, setup fees and the annual escalation in the contract. Power density drives the price: a cabinet of GPU servers can need several times the power of an ordinary cabinet, and not every hall can cool it.
Cloud. Compute and storage by the hour or month, data transferred out of the platform, support plans and backups. Reserved capacity lowers the cost of steady workloads.
On-premises. Hardware, UPS batteries, a generator or inverter, cooling, fire protection, security, maintenance, staff time and electricity. A 600 W rack running around the clock uses about 438 kWh a month, and over three years its electricity can cost about as much as a certified-refurbished rack server (serverhub.co.za, September 2026).
Licences. Windows Server is licensed by physical core. Standard edition covers two virtual machines on a fully licensed host and Datacenter edition covers unlimited Windows Server virtual machines, so dense virtualisation hosts usually run Datacenter (serverhub.co.za, September 2026).
Management. Monitoring, patching, backups and support, in-house or managed; see what managed IT services cost.

We do not publish colocation or cloud prices, because they depend on the facility, the power you commit, your usage and the term. Hardware for on-premises and colocated systems is quoted in rand, VAT included, by Server Hub (opens serverhub.co.za), our trading division, and we set out the options for your workloads in writing.

Risks, and how to reduce them

One site, one failure. Keep backups, and for critical systems a recovery environment, in a second facility or cloud region: a DR data centre in Cape Town for a Johannesburg primary, or the reverse. See backup and disaster recovery.
Power in long outages. Ask how long the generators run on the fuel held on site, how fuel is resupplied during extended load-shedding, and how often the generators are tested under load.
One route in. A single fibre route into a building is one cable cut from isolation. Choose carrier-neutral facilities and take two links on different networks.
Lock-in. Cloud platforms charge to move data out, and colocation contracts can run for years. Price the cost of leaving before you sign.
Unlogged access and missing records. Log every visit, remote-hands request and change against a request you approved, and keep an asset register, rack diagrams and a record of every cross-connect, or the next migration or audit becomes an investigation.

How to choose a data centre in South Africa

Classify your systems and data
Which systems are critical, which hold personal information, and how long each can be down.
Choose the model for each workload
On-premises, colocation, cloud or a mix.
Pick the locations
Near your users for the primary site, and far enough away for recovery; Johannesburg and Cape Town are the usual pair.
Set the resilience
The tier rating, generator runtime and cooling redundancy that each workload justifies.
Check connectivity
The carriers present, cross-connect charges, cloud on-ramps and access to an internet exchange point.
Check security and compliance
The scope of the facility's ISO/IEC 27001 certificate, access control, CCTV retention, and, where the provider processes personal information for you, a written operator agreement as POPIA section 21 requires.
Read the contract
Power pricing, escalation, remote-hands rates, notice periods and help with exit.
Visit
Walk the data hall, the generator yard and the meet-me room before you commit.

How Arke Technologies helps: choosing, building and running your data centre estate

We do not own or operate a data centre. We help you decide where each system should run, then design, build, place and manage it from Johannesburg, under one contract with one accountable team.

Choosing the model. We map your systems to colocation, a server room or cloud, workload by workload, and set out the options and their costs over the term in a written proposal.
Colocation placement and management. We place and manage your equipment in South African colocation data centres, from planning the move and racking the equipment to monitoring and support once it is live; see data centre and colocation services.
Server rooms. We design and build server rooms to sensible standards for power, cooling, UPS and racking, and size and supply the hardware through Server Hub; see server and infrastructure management.
Private cloud. We design and run virtualised infrastructure on VMware, Hyper-V and Proxmox, in your server room or in colocation; see private cloud and virtualisation.
Public cloud. AWS, Microsoft Azure and Google Cloud environments in South African regions, designed and managed by us; see cloud services.
AI infrastructure. Server Hub supplies AI workstations, GPU servers and NVIDIA AI supercomputers, and we design private AI deployments that keep sensitive data in South Africa; see private AI and AI infrastructure.
Operations. We run our own servers in Johannesburg, and monitoring checks each managed server every 15 minutes and raises faults as tickets.

Every engagement follows the same path: discovery, an assessment of what you run, a written proposal, then an SLA and onboarding. To start, discuss your project with us.

Equipment for your rack, cabinet or server room

Server Hub, our trading division, supplies the hardware a colocation cabinet or server room holds. Every unit is configured and bench-tested before dispatch, priced in rand with VAT included, and carries a local warranty: 12 months on new and certified refurbished, 90 days on pre-owned, in addition to your Consumer Protection Act rights.

Servers (opens serverhub.co.za) and rack servers (opens serverhub.co.za) for virtualisation hosts, databases and file services.
Refurbished servers (opens serverhub.co.za)
for steady workloads, test environments and recovery sites.
Server cabinets and racks (opens serverhub.co.za)
to hold and secure the equipment.
Storage (opens serverhub.co.za) and NAS (opens serverhub.co.za) for files, virtual machines and backups.
Networking (opens serverhub.co.za)
switches, routers and firewalls.
KVM switches (opens serverhub.co.za)
to control several servers from one console.

Request a hardware quote

Governance, compliance and procurement

Governance. Incidents prioritised from P1, a critical outage, to P4, a low-impact request, with targets agreed in your SLA; change control on every change; a current asset register and rack diagrams; and a monthly service review and report.
Compliance. POPIA sections 19, 21 and 72 (security safeguards, operator agreements and cross-border transfers), King IV Principle 12 for boards, and PFMA and MFMA audit expectations in the public sector; see our POPIA compliance checklist. We work to ISO/IEC 27001-aligned controls.
Procurement. Arke Technologies (Pty) Ltd is a Level 1 B-BBEE contributor (sworn affidavit available on request), giving buyers 135% procurement recognition. Company documents, our CSD supplier number and SARS tax compliance status are available on request. You can buy on a written proposal and SLA against your purchase order, or through a tender, for which we complete the standard bidding documents (SBD forms).
Continuity. Your equipment, data, credentials and documentation stay yours, so you can change facility or provider without starting again.

Last reviewed: September 2026, 17 min read

Map your systems to the right data centre

Tell us what you run and where your users are, and we will set out the on-premises, colocation and cloud options, with costs over the term.

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Frequently asked questions

Who are the biggest data centre providers?

The biggest data centre providers are the hyperscale cloud platforms, Amazon Web Services, Microsoft Azure and Google Cloud, alongside large colocation operators that rent space and power to many tenants. In South Africa, all three hyperscalers run local cloud regions, and the large colocation campuses cluster around Johannesburg and Cape Town. Compare facilities on power, resilience and connectivity rather than size; we help clients make that comparison and place their equipment.

What is a data centre? Meaning and definition

What sits inside a data centre: the infrastructure

The four main types of data centre

Enterprise (on-premises) data centres

Colocation data centres

Hyperscale (cloud) data centres

Edge data centres

Data centres in South Africa: where they are and what shapes the market

Colocation: what it is and how it works

Colocation vs cloud vs on-premises

Tier ratings: what tier 1, tier 2, tier 3 and tier 4 mean

What data centre services cost, and what drives the price

Risks, and how to reduce them

How to choose a data centre in South Africa

Classify your systems and data

Choose the model for each workload

Pick the locations

Set the resilience

Check connectivity

Check security and compliance

Read the contract

Visit