Starting from which Dell EMC PowerEdge server hardware generation is the Micro SD card in the IDSDM/vFlash module supported?

A technician is sent on-site to troubleshoot a server that produced an error message during the most recent POST, but then completed the POST and booted to the operating system. The user cannot remember the specific error and no entry was made in the error log relating to this error.
How can the technician find out what the error message was?

For a temporary migration task the CPU core count on the Dell EMC PowerEdge R640 server needs to be reduced to 8 because the installed application will not work due to license restrictions. Use the simulator to apply the change so the application can be installed.
When you have finished using the simulator, click Next.

After completing a disk rebuild operation, a technician needs to configure the system so that the rebuild process happens faster the expense of slowing users down.
Which setting should be changed?

A Dell EMC PowerEdge server logs the following CPU Machine Check error CPU1 IERR What action might solve the problem?