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Insights and Innovation · Immersion Cooling

The future
of data centre efficiency.

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What isImmersion cooling?A way to save space, water, energy and money at the same time.

Immersion cooling is an advanced process that submerges IT equipment in a dielectric fluid, delivering superior efficiency, compute density and reliability.

Immersion cooling tank

Cisco-GRC Alliance

Optimizing AI performance with Immersion-Cooled Data Centers.

100%Heat capture in coolant fluid
90%Reduction in cooling energy consumption
<1.03Industry-leading PUE
184 kWper rack for high-density AI/ML workloads

Source: Cisco-GRC Alliance, Partner Alliance Solution Brief.

How it works

The solution's elegance is its simplicity.

Servers and switching infrastructure are immersed in coolant-filled horizontal racks while a small pump circulates fluid through a heat exchanger. This eliminates the need for raised floors, CRACs, and other complex cooling infrastructure while delivering superior thermal performance.

Immersion tank seen from above
  1. 1Server ImmersionCisco UCS servers are fully immersed in Shell S3 X coolant
  2. 2Heat TransferThe coolant circulates around all server components, capturing 100% of the heat, compared to only 30% with traditional air-cooling
  3. 3Heat RemovalHeated coolant is pumped through the CDU where heat is transferred to facility water
  4. 4Coolant ReturnCooled fluid is returned to the rack at a precise, user-specified temperature
  5. 5Continuous CirculationThe system maintains optimal operating temperatures with minimal energy use

Immersion cooling

Why choose Immersion cooling?

Reduced cost of data centre operationsImmersion cooling lowers cooling energy requirements, minimising maintenance and extending hardware lifespan through more efficient thermal management.
Higher compute capacity, the same physical footprintImmersion cooling removes heat far more efficiently than traditional air cooling, enabling more servers and higher-power hardware to run in the same physical space.
Better thermal reliability for critical workloadsIts uniform and highly efficient heat removal minimises thermal stress and temperature fluctuations across components, improving hardware longevity and ensuring performance.
Maximize water and energy efficiencyNormal cooling can consume a disproportionate share of available capacity, while immersion cooling can reduce cooling energy usage by up to 90%, unlocking additional compute potential.

GRC ICEraQ

A plug-and-play solution for edge, data centres and remote sites.

GRC's ICEraQ micro-modular platform, combined with Cisco's proven compute and connectivity infrastructure, delivers a plug-and-play solution ideal for edge deployments, data centers, and remote sites that require reliable, high-density computing with minimal infrastructure requirements.

ICEraQ MICRO

Self-contained, 24U immersion cooled rack designed to be easy to get up and running — virtually anywhere. All you need is power, water service, and a level floor.

ICEraQ SX

Integrated modules with 4x42U or 2x42U racks, CDU, internal plumbing, and sensors makes the SX fast and easy to deploy in virtually data center

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