Viewing the RAID System Log
If you have trouble with your RAID configuration, you can check the diagnostic
messages in the RAID log for more information. The RAID card and associated software
write status and diagnostic messages to /Library/Logs/CoreRAID.log.
To view the RAID log:
Open the Console application (in /Applications/Utilities/).
Click Logs in the toolbar.
Choose /Library/Logs/CoreRAID.log from the list on the left.