When a hardware or software failure causes the storage system to panic, a core dump occurs and the system creates a core dump file that technical support can use to troubleshoot the problem. The storage system stores the core dump file in the /etc/crash directory on the root volume.
The savecore command, which is included in the default /etc/rc file on the root volume, performs the following tasks:
The n in the file name is a number. The string nz indicates that the file is compressed.
If the coredump.savecore.warn option is set to on, Data ONTAP prompts you for a confirmation when you delete unsaved core files.