There may be hard disks, solid-state disks or other storage devices that store confidential or sensitive information in the equipment replaced after the update of confidential computers. In order to ensure safety, these devices should be handled properly. The common practice is to destroy data to prevent it from being used maliciously.
Data destruction refers to completely erasing the data on the device, making it unrecoverable. This can be achieved by physically destroying hard disks, solid-state hard disks or erasing data with software tools.
For confidential computer equipment, it is recommended to take strict security measures to ensure that sensitive data will not be leaked or accessed by others. For more specific guidance and suggestions, please consult professional information security companies or institutions.
Please note that the above answers are based on industry common sense and best practices, and the specific operation needs to be decided according to the actual situation and relevant laws and regulations. If you need more specific guidance, please consult relevant professionals.