Failure Analysis of Direct Liquid Cooling System in Data Centers

[+] Author and Article Information
Sami Alkharabsheh

Department of Mechanical Engineering

Udaya L N Puvvadi

Department of Computer Science, Binghamton University

Bharath Ramakrishnan

Department of Mechanical Engineering

Kanad Ghose

Department of Computer Science, Binghamton University

Bahgat Sammakia

Department of Mechanical Engineering

1Corresponding author.

ASME doi:10.1115/1.4039137 History: Received September 23, 2017; Revised December 04, 2017


In this paper, the impact of direct liquid cooling (DLC) system failure on the IT equipment is studied experimentally. The main factors that are anticipated to affect the IT equipment response during failure are the CPU utilization, coolant set point temperature (SPT) and the server type. These factors are varied experimentally and the IT equipment response is studied in terms of chip temperature and power, CPU utilization, and total server power. It was found that failure of this cooling system is hazardous and can lead to data center shutdown in less than a minute. Additionally, the CPU frequency throttling mechanism was found to be vital to understand the change in chip temperature, power, and utilization. Other mechanisms associated with high temperatures were also observed such as the leakage power and the fans speed change. Finally, possible remedies are proposed to reduce the probability and the consequences of the cooling system failure.

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