Instrument cable linked to the card EJB, sjb on behalf of what it means
Do not install air conditioning to see your actual situation, such as your client on the network service requirements of the standard, your switch grade, etc., the temperature is too high will speed up the aging of some electronic components damage, like electrolytic capacitors, hundreds of thousands of equipment temperature Too high bad is a pity, the equipment 24 hours of operation, the best air conditioning, in conditions permitting, or installed.
Can not, air compressor trachea will be heat, will damage the cable, too many pipelines buried together, after the maintenance will be a lot of trouble.
This is no problem, as long as not overheating, summer get a small fan blowing on the line. Put the server must be on the air conditioning. Or on the down.