\begin{table}[t] \centering \renewcommand{\arraystretch}{1.4} \begin{tabular}{m{0.4\linewidth}cccc} \toprule Feature & ExaDigiT~\cite{DBLP:conf/sc/BrewerMKWBHSGGW24} & SmartDC~\cite{DBLP:conf/noms/ZhangZLZWC22} & DyTwin~\cite{DBLP:conf/sc/TaheriBPRHDEWPM24} \\ \midrule Virtual Prototyping & & \ding{51} & \\ Scenario Exploration & & & \\ 3D Facility Modelling & \ding{51} (via CFD and Modelica) & \ding{51} (via CFD and 6SigmaDC) & \\ Predictive maintenance & & & \\ Predictive energy modelling & & \ding{51} & \\ Reliability and availability modeling & & & \\ Cooling system modelling & & \ding{51} & \\ Network modelling & & & \\ Predictive modelling & & & \\ Power/Energy consumption optimization (PUE) & & \ding{51} & \\ Heat and Airflow distribution modelling & & \ding{51} & \\ Visual analytics dashboard & & & \\ Forensic analysis and diagnostics & & & \\ Failure detection & & & \\ Operational optimization & & & \\ Resource allocation & & & \\ \midrule \end{tabular} \caption{Comparison of selected features of existing datacenter digital twins.} \end{table}