Unverified80% confidenceDecision RuleTime unknown
NVR长期运行发热是掉盘和死机主因，选购时优先金属外壳、被动散热良好或带风扇机型，避免塑料密闭外壳；安装时留通风空间，多盘位机型尤其需关注散热设计
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80%
Confidence
Long-term
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