X10 and later boards with >= 3.58 IPMI FW support collecting out-of-band crash dump data.
You can access this page from Miscellaneous -> Troubleshooting
When there is a fatal event such as IERR OR CATERR, the IPMI should collect the crash dump data automatically and the download button should be enabled to download the crash dump. IPMI may reboot the OS to recover from the fatal error.
You can find these types of errors from the IPMI log and Lumbermill is aware of them now too.
If you click the Dump button, it will generate a new crash dump and, if an existing crash dump was available (e.g the download button was enabled) it will overwrite that crash dump data. Do not do this if you want to preserve the existing crash dump.
According to Supermicro, for situations where the system has hung, but has not already generated any crash dump, you can click Dump to manually generate a crash dump while the system is in the hung state.
Send the crash dump to SMC support along with the BIOS/IPMI version and HW spec.
Currently only available for Intel based systems. Support for AMD systems is being worked on.