At current levels of development and the complexity of the data center (called data center), it is necessary to accurately monitor the performance of its work. According to the saying "time is money", every minute failure of the corporate server generates financial losses. In order to be competitive in the market must have a large and easily accessible collection of information. To ensure the server rooms. So what sort of risk may be accompanied by her daily work, and how to prevent it? First it raises to mind is physical, such as fluctuations in temperature, moisture, mechanical damage to cables or wires from the coolant or interference person is effective. How to detect this type of risk while giving yourself time to react? The basis is appropriate porozmieszczanie sensors. Focus is therefore discussing each of them.