ZUBAL, BOHDAN. “ENERGY EFFICIENCY AND TOTAL COST OF OWNERSHIP  OF MULTI-LAYER DATA STORES”. Herald of Khmelnytskyi National University. Technical sciences 355, no. 4 (August 28, 2025): 172–176. Accessed January 26, 2026. https://heraldts.khmnu.edu.ua/index.php/heraldts/article/view/1771.