# Evaluation of a New-Concept Secure File Server Solution
## 4 Results
### Reference-Based Performance Evaluation  
In order to compare the performance of the two server-side software environments in an exact manner, the reference-based performance indicator presented in Section 3.2.5 was also calculated. The metric was calculated by dividing the average of the transfer times for the same clients and the same file sizes with each other for different server environments. Since we are investigating the performance of the ARDS TestServer, the average transfer times of the ARDS Server were divided by the Windows 2019 Server results. It follows that if the quotient is less than one, the proposed solution (ARDS TestServer) performs better, and if it is greater than one, it indicates poorer performance. The calculated reference-based performance indicators are summarized in Tables 6 and 7.  
The tests provided a comprehensive picture of the performance of the proposed server environment compared to a commonly used solution. Examining the different transfer time ratios obtained from the read tests, it is clear that in the vast majority of cases (14), the proposed solution performed better; in 3 cases, there were minor differences; and in only 3 cases was it slower during the transmission. In the writing tests, the transfer time in most cases (12) was low compared to the Windows 2019 Server solution. In five cases, it showed similar results, and in three cases, it was higher.  
\begin{table}
\begin{tabular}{l c c c c} \hline \hline  & \multicolumn{5}{c}{**Files**} \\  & **1 \(\times\) 1 GiB** & **4 \(\times\) 256 MiB** & **256 \(\times\) 4 MiB** & **2097 \(\times\) 500 kiB** \\ \hline \hline
**Reading test results** & & & & \\ \hline Windows 7—ARDS TestServer/ & & & & \\ Windows 7—Windows 2019 Server & 1.0723 (\({}^{=}\)) & 0.9872 (\({}^{+}\)) & 0.9703 (\({}^{+}\)) & 0.9078 (\({}^{+}\)) \\ \hline Windows 10—ARDS TestServer/ & & & & \\ Windows 10—Windows 2019 Server & 0.9958 (\({}^{+}\)) & 0.9957 (\({}^{+}\)) & 0.9873 (\({}^{+}\)) & 0.9363 (\({}^{+}\)) \\ \hline Ubuntu 22.04—ARDS TestServer/ & & & & \\ Ubuntu 22.04—Windows 2019 Server & 1.0043 (\({}^{=}\)) & 1.0075 (\({}^{-}\)) & 0.9749 (\({}^{+}\)) & 1.1715 (\({}^{-}\)) \\ \hline
**Writing test results** & & & & \\ \hline Windows 7—ARDS TestServer/ & & & & \\ Windows 7—Windows 2019 Server & 1.0109 (\({}^{=}\)) & 1.0150 (\({}^{=}\)) & 1.0947 (\({}^{=}\)) & 0.8491 (\({}^{+}\)) \\ \hline Windows 10—ARDS TestServer/ & & & & \\ Windows 10—Windows 2019 Server & 4.0782 (\({}^{-}\)) & 13.2265 (\({}^{-}\)) & 683.8709 (\({}^{-}\)) & 878.7343 (\({}^{-}\)) \\ \hline Ubuntu 22.04—ARDS TestServer/ & & & & \\ Ubuntu 22.04—Windows 2019 Server & 1.0085 (\({}^{=}\)) & 1.0072 (\({}^{=}\)) & 0.9973 (\({}^{+}\)) & 1.3681 (\({}^{-}\)) \\ \hline \hline \end{tabular} \({}^{(+)}\) ARDS TestServer performed better. \({}^{(-)}\) Windows 2019 Server performed better, but the difference in speed was under 10 percent. \({}^{(-)}\) Windows 2019 Server performed better and the difference in speed was higher than 10 percent.  
\end{table}
Table 6: Reference-based performance evaluation for reading and writing tests on 1 Gbit/s bandwidth.