Check supported browsers Your technical details and browser version: Request ID: 95a5884f6885cc79-IAD IP: 64.71.32.80 UTC time: 2025-07-05T08:36:03+00:00 Browser: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/536.11 (KHTML, like Gecko) Chrome/20.0.1132.47 Safari/536.11 About ScienceDirectRemote accessShopping cartAdvertiseContact and supportTerms and conditionsPrivacy policyCookies are used by this site. Cookie SettingsAll content on this site: Copyright © 2024 Elsevier B.V., its licensors, and contributors. All rights are reserved, including those for text and data mining, AI training, and similar technologies. For all open access content, the relevant licensing terms apply. , Data recovery strategies include hot sites, spare or underutilized servers, the use of noncritical servers, duplicate data centers, replacement agreements, and transferring operations to other locations., In the case of air-cooled data centres, which stand for the majority of existing data centres, the excess heat is discharged into the air, typically using a chiller or a cooling tower. The temperature range of this waste heat from air cooled servers, 35–45 °C, makes it suitable for recovery to heat nearby buildings..