The Future of AI Data Centers: How ORv3 is Redefining Infrastructure

The Future of AI Data Centers: How ORv3 is Redefining Infrastructure

AI workloads have fundamentally outgrown traditional rack architecture. As power densities push past 100 kW per rack, the 19-inch chassis, distributed PSUs, and AC cabling that defined data center design for decades are no longer viable at AI scale.

The industry's response, codified through the Open Compute Project, is ORv3 server rack architecture: a DC-native, thermally aware, modular infrastructure standard built specifically for GPU-dense, high-throughput AI deployments.

This isn't an incremental upgrade. It's a complete rearchitecting of how power, compute, and cooling are treated, moving from separate concerns to a unified, co-designed system.

Why Traditional Racks Failed AI Workloads

The 19-inch rack served the industry well for general compute. But modern AI training clusters and hyperscale inference engines operate at a completely different scale.

A single rack of current-generation AI accelerators can demand well over 100 kW. AC power distribution systems were never designed for this level of density. Server-level PSUs waste energy through repeated conversion stages, while dense copper cabling becomes a thermal and serviceability challenge at scale.

The result is efficiency loss, thermal bottlenecks, and reliability risks that compound as clusters grow. Traditional rack infrastructure simply wasn't built for this operating environment. A more fundamental shift became necessary.

What ORv3 Actually Changes

ORv3 is the third-generation rack specification from the Open Compute Project. Earlier versions focused on incremental improvements. ORv3 takes a different approach by redefining the rack as an integrated power and thermal platform instead of just a chassis.

The shift affects three core layers:

• Power distribution

• Physical form factor

• Cooling architecture

Each layer is designed to work together as part of a unified system.

Traditional Rack	ORv3 Architecture
AC power distribution	48V DC busbar backbone
Distributed server-level PSUs	Centralized high-efficiency power shelf
Manual cabling throughout	Blind-mate connectors, tool-free insertion
Air cooling only	Liquid-cooling-ready chassis design
Higher conversion losses	Reduced impedance, fewer failure points

The Busbar: ORv3’s Core Power Innovation

Traditional data centers convert AC power at the rack edge and rely on individual server PSUs for final DC conversion. Every stage introduces efficiency loss, and every connection becomes a potential failure point.

ORv3 changes this by centralizing conversion through high-efficiency power shelves that feed a 48V DC busbar running vertically through the rack.

Servers connect through blind-mate connectors, allowing plug-in deployment without manual wiring. The busbar effectively becomes the rack’s power backbone, offering lower impedance, fewer conversion stages, and the ability to support kiloampere-class delivery for modern AI accelerators.

The electrical topology is cleaner in every measurable way. Instead of managing a tangled wiring harness, operators get a structured and serviceable power architecture designed to scale alongside rising GPU power requirements.

At megawatt scale, even small efficiency gains at the power layer compound significantly.

Wider Racks, Built for Liquid Cooling

ORv3 moves away from the legacy 19-inch form factor to a wider 21-inch chassis.

That additional width is not cosmetic. It improves internal airflow and creates the physical space needed for liquid cooling integration directly within the rack architecture.

Air cooling alone can no longer keep pace with the thermal output of dense GPU configurations operating under sustained load. Direct liquid cooling (DLC), rear-door heat exchangers, and immersion-compatible designs all require rack-level accommodation.

With ORv3, thermal management is designed into the infrastructure from the beginning rather than retrofitted later at significant cost and operational disruption.

Centralized PSUs: Ending Stranded Capacity

Conventional deployments give every server its own PSU, typically sized for peak load with N+1 redundancy. In practice, most systems operate well below rated capacity.

The result is stranded power hardware that consumes cost and space without being fully utilized.

ORv3 replaces this model with centralized rack-level power shelves, usually delivering between 30 kW and 33 kW per unit, shared across all compute resources within the rack and protected through shelf-level redundancy.

This improves utilization, reduces stranded capacity, and simplifies the power chain from facility to compute sled.

At hyperscale deployment levels, that simplification directly translates into operational and capital efficiency.

What a Production ORv3 System Looks Like: Velankani’s Integrated Stack

Velankani’s OCPv3 Server Racks, designed and manufactured in Electronics City, Bengaluru, are positioned as India’s first fully integrated rack-to-power system.

The product line covers the complete ORv3 stack within a single-vendor architecture:

• Rack chassis

• 48V DC busbar

• Centralized power shelf

• PSU range

All components are engineered to work together as a unified system.

Rack

Powder-coated welded steel frame rated to 1,400 kg, built around a 21-inch OCP-compliant form factor with tool-free click-in rail and shelf assembly. The rack also supports liquid-cooling-ready thermal design with direct busbar contact for OCP IT gear.

Busbar

18 kW-rated copper/silver conductor with quick-connect architecture and cable-free power distribution. The modular layout is optimized for airflow and designed for both hyperscale and edge deployments.

Power Shelf

33 kW total output with 5+1 hot-swappable redundancy, PMC controller integration, PoE, and Ethernet telemetry. The system is designed to handle 150% load spikes, which is critical for AI and HPC workloads with burst demand characteristics.

PSU Range

800W to 2,600W CRPS-compliant units with 80 Plus Titanium efficiency, built-in OVP/UVP protection, and PMBus diagnostics for real-time energy monitoring.

The integration approach matters just as much as the specifications themselves.

Many operators deploying AI infrastructure today still assemble rack systems from multiple vendors, inheriting interoperability risk, lead-time inconsistencies, and support complexity in the process.

A fully integrated stack significantly reduces that operational friction.

ORv3 at Megawatt Scale

The hyperscalers building today’s largest AI clusters, often measured in hundreds of megawatts, require infrastructure that scales horizontally without repeated architectural redesign.

ORv3’s modular architecture supports exactly that requirement. Operators can deploy the same rack specifications, power shelf SKUs, and management interfaces consistently across both 10 MW and 100 MW deployments.

That level of consistency, combined with the open interoperability standards of the Open Compute Project, is what makes ORv3 a scalable platform rather than a point solution.

The Infrastructure Decisions That Define the Next Decade

The next phase of AI infrastructure growth will not be defined only by who builds the largest facilities.

It will be shaped by who builds the most electrically efficient, thermally resilient, and operationally coherent ones.

ORv3 server rack architecture provides that blueprint.

The infrastructure decisions being made today, including rack specification, power distribution topology, and cooling strategy, will determine operational efficiency and expansion flexibility for years to come.

The standard already exists. Production-ready AI data center rack systems built around it already exist.

The remaining question is execution speed. Explore Velankani's integrated OCPv3 rack infrastructure — rack, busbar, power shelf, and PSU, fully integrated and built in India.