What is an AI datacenter?

An AI datacenter is a facility purpose-built or retrofitted for GPU and accelerator workloads — typically at rack densities above 30 kW, with liquid-cooling readiness and high-bandwidth fabric (InfiniBand NDR, NVLink, or Spectrum-X). At least 40% of IT load runs AI training or inference on GPUs such as NVIDIA H100, H200, B200, or GB200 NVL72.

Which datacenter has the most GPUs?

As of 2026, xAI Colossus in Memphis, Tennessee holds the title of the world's largest single-site GPU deployment, with more than 200,000 NVIDIA H100 and H200 GPUs in one InfiniBand domain. Meta Hyperion (Louisiana) and OpenAI Stargate Abilene (Texas) are scaling toward gigawatt-class deployments that will overtake it within the next 18 months.

What is the largest AI cluster?

xAI Colossus is the largest contiguous AI training cluster in 2026, exceeding 200,000 NVIDIA H100/H200 GPUs on a single InfiniBand NDR 400G fabric. Meta's Hyperion build and OpenAI's Stargate program are constructing multi-site fabrics that will exceed one million accelerators across coupled campuses by 2027.

Which GPU cloud is cheapest for H100?

On-demand: Together AI ($1.75/hr) and Voltage Park ($1.89/hr) lead. Reserved 1-year: Voltage Park ($1.20/hr) and Crusoe ($1.39/hr) are typically lowest. AWS p5 sits at the top of the price stack at ~$4.10/hr on-demand.

How is Datacenter.computer different from a datacenter directory?

Datacenter.computer is an agent-readable intelligence layer, not a directory. It normalizes capacity, power, fabric and location across 833 sourced facilities and 40 operators into a single queryable graph for AI agents, traders and procurement teams.

[DC.COMPUTER] Layer 5 · Colocation

Iron Mountain Data Centers

Every indexed Iron Mountain Data Centers datacenter — facility-level capacity, GPU fleet, and country coverage.

Datacenter Portfolio

[AI Summary]

Iron Mountain Data Centers runs 27 indexed datacenters across 7 countries, totaling 0 MW of IT capacity. The portfolio spans colocation tiers and deploys a mixed accelerator fleet.

Facilities

0 MW

Total IT

Countries

GPU SKUs

[Facilities · 27]

Facility	Operator	Location	Status	Accelerators	Recorded MW	Confidence
Iron Mountain VA-1 Manassas	Iron Mountain Data Centers	Manassas, VA, USA	Operational	Not publicly disclosed	Not disclosed	High
Iron Mountain VA-2 Manassas	Iron Mountain Data Centers	Manassas, VA, USA	Operational	Not publicly disclosed	Not disclosed	High
Iron Mountain VA-3 Manassas	Iron Mountain Data Centers	Manassas, VA, USA	Operational	Not publicly disclosed	Not disclosed	High
Iron Mountain VA-4 Manassas	Iron Mountain Data Centers	Manassas, VA, USA	Operational	Not publicly disclosed	Not disclosed	High
Iron Mountain VA-5 Manassas	Iron Mountain Data Centers	Manassas, VA, USA	Operational	Not publicly disclosed	Not disclosed	High
Iron Mountain VA-6 Manassas	Iron Mountain Data Centers	Manassas, VA, USA	Operational	Not publicly disclosed	Not disclosed	High
Iron Mountain VA-7 Manassas	Iron Mountain Data Centers	Manassas, VA, USA	Operational	Not publicly disclosed	Not disclosed	High
Iron Mountain WPA-1 Boyers (The Underground)	Iron Mountain Data Centers	Boyers, PA, USA	Operational	Not publicly disclosed	Not disclosed	High
Iron Mountain WPA-2 Boyers	Iron Mountain Data Centers	Boyers, PA, USA	Operational	Not publicly disclosed	Not disclosed	High
Iron Mountain WPA-3 Boyers	Iron Mountain Data Centers	Boyers, PA, USA	Operational	Not publicly disclosed	Not disclosed	High
Iron Mountain AZP-1 Phoenix	Iron Mountain Data Centers	Phoenix, AZ, USA	Operational	Not publicly disclosed	Not disclosed	High
Iron Mountain AZP-2 Phoenix	Iron Mountain Data Centers	Phoenix, AZ, USA	Operational	Not publicly disclosed	Not disclosed	High
Iron Mountain AZS-1 Scottsdale	Iron Mountain Data Centers	Scottsdale, AZ, USA	Operational	Not publicly disclosed	Not disclosed	High
Iron Mountain NJE-1 Edison	Iron Mountain Data Centers	Edison, NJ, USA	Operational	Not publicly disclosed	Not disclosed	High
Iron Mountain OHC-1 Columbus	Iron Mountain Data Centers	Columbus, OH, USA	Operational	Not publicly disclosed	Not disclosed	High
Iron Mountain TXD-1 Dallas	Iron Mountain Data Centers	Dallas, TX, USA	Operational	Not publicly disclosed	Not disclosed	High
Iron Mountain CAS-1 Santa Clara	Iron Mountain Data Centers	Santa Clara, CA, USA	Operational	Not publicly disclosed	Not disclosed	High
Iron Mountain MAB-1 Boston	Iron Mountain Data Centers	Boston, MA, USA	Operational	Not publicly disclosed	Not disclosed	High
Iron Mountain CODN-1 Denver	Iron Mountain Data Centers	Denver, CO, USA	Operational	Not publicly disclosed	Not disclosed	High
Iron Mountain MIK-1 Kalamazoo	Iron Mountain Data Centers	Kalamazoo, MI, USA	Operational	Not publicly disclosed	Not disclosed	High
Iron Mountain LON-1 Slough	Iron Mountain Data Centers	Slough, United Kingdom	Operational	Not publicly disclosed	Not disclosed	High
Iron Mountain LON-2 London	Iron Mountain Data Centers	London, United Kingdom	Operational	Not publicly disclosed	Not disclosed	High
Iron Mountain AMS-1 Amsterdam	Iron Mountain Data Centers	Amsterdam, Netherlands	Operational	Not publicly disclosed	Not disclosed	High
Iron Mountain FRA-1 Frankfurt	Iron Mountain Data Centers	Frankfurt, Germany	Operational	Not publicly disclosed	Not disclosed	High
Iron Mountain MAD-1 Madrid	Iron Mountain Data Centers	Madrid, Spain	Operational	Not publicly disclosed	Not disclosed	High
Iron Mountain MUM-1 Mumbai	Iron Mountain Data Centers	Mumbai, India	Operational	Not publicly disclosed	Not disclosed	High
Iron Mountain SIN-1 Singapore	Iron Mountain Data Centers	Singapore, Singapore	Operational	Not publicly disclosed	Not disclosed	High

Complete portfolio: 27 of 27 sourced records shown. How these records are sourced.

[FAQ]

How many datacenters does Iron Mountain Data Centers operate?

27 indexed facilities totaling 0 MW across 7 countries.

Which GPUs does Iron Mountain Data Centers deploy?

Mixed accelerator fleet across the portfolio.

In which countries does Iron Mountain Data Centers operate?

Germany, India, Netherlands, Singapore, Spain, USA, United Kingdom

[Knowledge Graph]

Company → Datacenter → GPU → Customer → Industry

Every entity on this site is cross-linked. Follow the graph from operators down to specific facilities, GPU clusters, customers, and sectoral context.