{"id":2321,"date":"2026-10-27T01:31:15","date_gmt":"2026-10-27T07:01:15","guid":{"rendered":"https:\/\/rackbank.com\/blog\/?p=2321"},"modified":"2026-10-27T01:31:17","modified_gmt":"2026-10-27T07:01:17","slug":"india-colocation-cities-providers-what-to-compare","status":"publish","type":"post","link":"https:\/\/rackbank.com\/blog\/india-colocation-cities-providers-what-to-compare\/","title":{"rendered":"India Colocation: Cities, Providers and What to Compare"},"content":{"rendered":"
\n\n\n\n
TL;DR<\/strong>
India colocation capacity sits mostly in seven metro markets, led by Mumbai, with growth widening to more cities and Central India.
The city sets your cable, power, hazard and latency profile. The provider type sets density, contract and support model.
Compare sites on documents rather than brochures, and plan for two cities if the workload cannot stop.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n

Most searches for India colocation turn up tag archives and provider pages, not a buyer’s view of the market. That leaves chief information officers (CIOs), infrastructure heads and procurement teams putting together their own picture of which cities matter, what kinds of provider operate there and how to compare them fairly.<\/p>\n

This guide is for Indian enterprises choosing where to place racks: banking, financial services and insurance (BFSI) firms with regulator-facing workloads, software companies with national user bases, and teams planning artificial intelligence (AI) clusters that need far more power per rack than a typical enterprise hall. It explains what shapes each market, how the main cities differ, which provider types exist and what to verify before signing.<\/p>\n

It builds on our practical enterprise checklist for evaluating a colocation provider<\/a>. That checklist covers how to test a single facility using its documents. This article covers the step before it: picking the cities and provider types worth testing.<\/p>\n

What shapes an India colocation market<\/strong><\/h2>\n

Five factors explain why capacity has clustered where it has. Each one is something you can check for any site you shortlist.<\/p>\n

Cable landings and network reach<\/h3>\n

International traffic enters India through submarine cables that come ashore at cable landing stations (CLS). The Telecom Regulatory Authority of India (TRAI), in its recommendations of 19 June 2023 on submarine cable landing (Chapter 2, para 2.1), recorded 17 submarine cables landing in India as of end-2022, with Mumbai and Chennai holding the largest concentration. TRAI also recommended a second category of site, the CLS point of presence (PoP): a fibre distribution point linked to a main landing station. For a colocation buyer, this means coastal hubs offer the shortest path to international capacity. An inland site depends on how diverse its terrestrial fibre routes to those hubs are.<\/p>\n

Power, land and state policy<\/h3>\n

Capacity is counted in megawatts (MW) of IT load, the power available to servers. Cushman & Wakefield’s India Data Centre H1 2026 Update puts operational capacity across the top seven markets at 1,789 MW, spread over 147 data centres run by 33 providers, with colocation vacancy at 14.9 percent. It expects another 3,860 MW of supply by 2030: 509 MW under construction and 3,351 MW in planning. Planned capacity is a pipeline, not built halls. Invest India notes that fiscal incentives and support for digital infrastructure are part of the national investment case. Data centre (DC) policies are notified by individual states, though, and their concessions differ and change. Read the current state notification for any site rather than relying on summaries.<\/p>\n

Seismic, flood and cyclone exposure<\/h3>\n

Earthquake design in India follows IS 1893 from the Bureau of Indian Standards (BIS). In November 2025, BIS released a revised code, IS 1893 (Part 1):2025, with a new zone map that adds a Zone VI and places towns on a zone boundary in the higher zone. Reports in early 2026 say this revision was withdrawn and the 2016 edition reinstated. Because the edition in use has shifted, we do not list seismic zones city by city here. Ask each provider which zone and which edition of IS 1893 the building was designed to, and check the site address against the current map on the BIS website. Treat flood and cyclone exposure the same way: as a property of the plot, not the city.<\/p>\n

Latency to your users and clouds<\/h3>\n

Latency depends on fibre routes, not map distance. Rather than relying on rules of thumb, measure round-trip times from your main user locations and from the cloud regions and payment or partner networks your applications call. Ask shortlisted providers for traceroutes from the facility, their carrier list and whether those carriers take physically separate routes out of the building.<\/p>\n

\"Concept<\/figure>\n

Figure 1. The factors that decide where colocation capacity clusters: network reach, power and policy, site hazard and latency.<\/em><\/p>\n

India colocation markets, city by city<\/strong><\/h2>\n

Invest India describes Mumbai, Chennai, Hyderabad and Delhi NCR as the anchors of national data centre growth, with Bengaluru, Pune and Kolkata increasingly strengthening the ecosystem. Here is how each one reads from a buyer’s side.<\/p>\n

Mumbai.<\/strong> Mumbai had 890 MW of operational capacity in H1 2026, about half of operational capacity across the top seven markets, and the largest upcoming supply pipeline at 1,726 MW (Cushman & Wakefield, H1 2026). It is one of the two cities TRAI names as having the largest concentration of submarine cables. It suits workloads that need international reach and many carriers. The trade-offs are land and power constraints in a dense metro, and monsoon waterlogging, which varies by plot and deserves a site-level check.<\/p>\n

Chennai.<\/strong> Chennai had 214 MW operational in H1 2026 (Cushman & Wakefield) and is the other city TRAI names for cable concentration. It is a natural east-coast counterpart to Mumbai for international connectivity and for a second site. Ask about cyclone design and flood history for the specific plot.<\/p>\n

Hyderabad.<\/strong> Hyderabad had 151 MW operational in H1 2026 (Cushman & Wakefield). It is an inland market, so its international traffic travels over terrestrial fibre to the coastal landing stations. It often suits large campus builds and enterprises that want to stay away from the coast.<\/p>\n

National Capital Region (NCR).<\/strong> Delhi NCR is one of the four anchor markets Invest India names. It sits close to a large base of enterprise and government users in north India. It has no submarine cable landing of its own in TRAI’s end-2022 list, so ask how diverse its fibre routes are to both Mumbai and Chennai.<\/p>\n

Pune.<\/strong> Pune is one of the markets Invest India lists as strengthening the ecosystem. It is close to Mumbai by road and fibre, which makes it a candidate for a paired site that shares carriers with Mumbai while sitting outside its densest flood-prone areas. Check how separate the routes really are.<\/p>\n

Bengaluru.<\/strong> Bengaluru also appears in Invest India’s list of growing markets. It is close to a large technology workforce and engineering teams, which helps when you want staff near the hardware. Like Hyderabad, it reaches international capacity over terrestrial fibre.<\/p>\n

Kolkata.<\/strong> Kolkata is the largest market in eastern India. TRAI’s end-2022 count had no submarine cable landing in West Bengal, though TRAI’s 2022 consultation paper named Digha in West Bengal as a new landfall location for planned cables. West Bengal state officials announced in 2024 that a Digha landing station would be operational by the first quarter of 2026. We have not confirmed its commercial service status, so verify it with carriers before counting on it. As with every city, ask for flood mapping for the exact plot.<\/p>\n

Central India.<\/strong> Inland cities such as Indore and Raipur sit away from both coasts and the dense metro grids. They are suited to disaster recovery (DR) sites, AI training clusters and campuses that need land and power more than international reach. Their network quality depends on diverse fibre to both coastal hubs, so that is the first thing to test.<\/p>\n

\n\n\n\n
WHAT TO VERIFY<\/strong>
The current operational and contracted power for the specific building, not the city.
The seismic zone and IS 1893 edition used in the structural design, checked against the current BIS map.
Flood, waterlogging and cyclone records for the plot, plus plinth height.
A carrier list, and proof that those carriers take physically separate routes out of the building.
The status of any cable landing or substation the provider’s pitch relies on.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n
\"Stylised<\/figure>\n

Figure 2. India’s colocation markets: coastal cable hubs, inland metros and Central India.<\/em><\/p>\n

Four provider types and when each fits<\/strong><\/h2>\n

Within any city, providers fall into roughly four types. The type often matters more than the brand, because it decides your minimum commitment, rack density and how much control you keep.<\/p>\n