Server crashes are more difficult to judge, generally divided into software and hardware.

1, software failure: first check the operating system's system log, you can use the system log to determine the cause of the crash; the cause of the computer virus; system software bugs or loopholes caused by the failure, this kind of failure needs to judge the hardware after the failure Made, and need help from the software provider; improper use of the software or excessive pressure on the system, you can ask the customer to reduce the working pressure of the server to see if it can be solved.

2, hardware failure: hardware conflict; power failure or power supply shortage, you can make a judgment by comparing the value of all load power of the server power; hard disk failure (by scanning the surface of the hard disk to check for bad sectors); memory failure (can Through the error report in the BIOS of the motherboard and the error message of the operating system to judge); motherboard failure (using the replacement method to judge); CPU failure (using the replacement method); board failure (usually SCSI / RAID card or other pci devices also have May cause the system to crash, can be judged by the replacement method)

Note: The system crashes need to be tested after a certain period of time to perform a certain pressure on the machine to check whether the fault is completely solved.