GRC & Minimus Servers Blog

TACC Doubles Down on Liquid Immersion Cooling, GRC Delivers Another Immersed HPC Cluster Solution

Posted by Dhruv Varma on November 10, 2017

Green Revolution Cooling provides the Texas Advanced Computing Cluster with new GPU-based servers that leverage the cost benefits available with immersion cooling.

Green Revolution Cooling (GRC) today announced that it will be delivering a custom GPU-based cluster to the Texas Advanced Computing Center (TACC). TACC has been a long-time advocate and user of GRC’s immersion cooling technology dating back to 2009, when the technology was first brought to market. The installation has expanded over the years to include more racks and this new order will further build on the existing deployment.

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Topics: data center efficiency, hardware, cost, cost optimization, efficiency, power, data center, News & Events, sustainability, reliability, press release

GRC Deploys Immersed HPC Cluster at John Paul Catholic University

Posted by Dhruv Varma on October 24, 2017

GRC's Liquid immersion computing system is the ultra-efficient computing cluster at John Paul Catholic University in San Diego, CA.

[October 24, 2017 – Austin, TX] Green Revolution Cooling (GRC), the leader in immersion cooling, today announced the latest installation of its liquid immersion computing system at John Paul Catholic University (JPCU) in San Diego, CA. The high density cluster made up of industry standard servers optimized for immersion, and built in partnership with Supermicro, exploit the enhanced performance and compelling economic value inherent with GRC liquid immersion technology.

Virtually limitless cooling, industry leading efficiency, and lower upfront cost, made it an absolute no brainer for us,” said Kevin Meziere, VP of Technology at JPCU “the ability to cool over 100kW [per rack] effectively and efficiently, gives us the ability to be more responsive to future technology trends and adopt more powerful hardware without concerns of cooling capacity and costs. Being a downtown campus every square inch counts, so the ability to pack equipment more densly is a huge win.

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Topics: data center efficiency, hardware, cost, cost optimization, efficiency, power, data center, News & Events, sustainability, reliability, press release

GRC’s Oil Immersion Cooling System at PIC Supports Data Processing for The Large Hadron Collider at CERN

Posted by Dhruv Varma on April 19, 2017

PIC in Barcelona, Spain shares key performance and reliability results from its immersion cooled data-intensive cluster.

[April 19, 2017 – Austin, TX] Green Revolution Cooling (GRC), a leader in immersion cooling, today announced key performance and reliability results from its installation at Port d’Informació Científica (PIC) in Barcelona, Spain. The ultra-efficient cluster installed in October 2015 has since been used to process dozens of Petabytes of data from CERN's Large Hadron Collider, and leading-edge astrophysics projects.

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Topics: data center efficiency, hardware, cost, cost optimization, efficiency, power, data center, News & Events, sustainability, reliability, press release

Transformer Efficiency

Posted by Christiaan Best on June 8, 2016

Transformer Efficiency: Is it worth it?

PUE often encompasses all of the losses from the utility down to the server. This includes transformers that convert power down to 400 or 208, 3 phase power. To get an understanding of your "total" efficiency, transformer efficiency and costs have to first be understood.

Here are few things of interest to data center operators:
  • There are several factors that affect transformer inefficiency (electrical losses):
    • Hysteresis due to charging the field in the iron core (which is NOT proportional to load).
    • Line losses through the coil (which are proportional to load).
  • There are several different type of transformers:
    • "Standard temperature rise" – More efficient at partial loads, where data centers actually operate.
    • "Low temperature rise" – This means there is a low surface temperature (less heat coming off the transformer). These transformers have larger iron cores, which make them more efficient at transferring energy at high loads, but less efficient at partial loads, where data centers actually operate.
    • DOE 2016” – In the US, the Department of Energy released a new efficiency standard for all transformers sold. These transformers are more efficient across the board.
Below, Figure 1 shows a typical efficiency curve for a 225 kVA transformer from Square D. This is juxtaposed against older, standard temperature rise, and low temperature rise transformers.

Figure 1: Transformer efficiency curves for standard, low temperature, and DOE 2016 type transformers
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Topics: data center efficiency, transformers, cost, efficiency, power