Saves the following two core files from a filer crash in the /etc/crash directory:
The core.n-small file, which contains everything except the file system buffers.
The core.n file, which includes more information that might be essential for determining the cause of the crash; it is often necessary for investigating problems involving the file system.
The n in the file name of the core file is a number. Core files are created only during the first boot after a system crash.