| Title |
A Study on the Rack-based Cooling Approach Applicability for Stable IT Environment of High-density and Hyper-scale Data Centers |
| Authors |
Jinkyun Cho ; Youngjae Lee ; Wung Bok Lee |
| DOI |
https://doi.org/10.6110/KJACR.2022.34.4.183 |
| Keywords |
하이퍼스케일 데이터센터; 고집적; 랙-기반 냉각; IT운영환경; 전력이용효율; 적용성 Hyper-scale data center; High-density; Rack-based cooling; IT environment; PUE; Applicability |
| Abstract |
For the feasibility study of data center cooling strategy according to IT power density, a 150 kW class IT room independent module was derived. As a result of analyzing the required area based on the rack-based cooling module for high density IT power, it was deduced that the row-based cooling module for medium density IT power increased by 150%, and the room-based cooling module for low density IT power increased by 230%. It was deduced that the annual PUE cooling of the rack-based cooling system is 1.28, and the annual cost of cooling energy is 231 USD to operate 1 kW of IT load. For the row-based cooling system, the annual power consumption increased by approximately 10% compared to the rack-based cooling system, PUE cooling is 1.31, and the cooling energy cost is 255 USD/IT-kW. The power consumption of the room-based cooling system increased by 18% and 7%, respectively, compared to the rack-based and row-based cooling, and the PUE cooling also increased to 1.33, resulting in a cooling energy cost of 272 USD/IT-kW. When hyper-scale data centers become mainstream and IT power density of 15.0 kW/rack or higher, the rack-based cooling must be considered first. |