The shielding room is mainly used for shielding effectiveness of shielding requirements higher, larger equipment is relatively concentrated, generally as a permanent shield is not removable, can only enter the indoor fiber, shielding cabinet is mainly used for shielding effectiveness of shielding requirements higher, smaller, more decentralized equipment, mobile and convenient, flexible, only into the shielded cable. The overall average weight is shielded room scattered across the floor, but the shield cabinet weight is concentrated in the area within the cabinet, is not dispersed, so the shielded room in unit area to light shielding cabinet. The weight of the shielding room is about 100KG/M2, and the weight of the shielding cabinet is about 145KG/M2. After shielding the whole shell of the shielding machine room, the cabinet inside the computer room can adopt the ordinary cabinet, which can achieve good heat dissipation effect and guarantee the stability of the equipment. Due to the shielding shielding cabinet, cabinet six is closed shell, only through the ventilation duct ventilation window, but the window guide drag is relatively large, the precision air conditioning air flow is greatly reduced, the cooling effect is very poor, generally in the cabinet to be 4 - 5 devices, if too many devices are easily damaged crash or equipment.