“…As shown in Figure 1 , the components include the following: power monitoring, environmental monitoring, security monitoring, and ∗ network monitoring (optional); the items include the following: power meters, distribution switches, UPS, diesel generators, distribution cabinets, PDUs, DC power supply systems, STS, and ATS battery packs; temperature and humidity, precision air conditioning, water leakage, server room air conditioning, fresh air units, haze, and harmful gases; CCTV, access control system, fire extinguishing system, lightning detection, and antitheft monitoring. Routers, switches, servers, and firewalls [ 1 ], as shown in Table 1 .…”