All changes that are made to RAID configurations using 3DM 2 or CLI are automatically stored in a special log file, tw_mgmt.log. This log can be helpful for troubleshooting problems with your RAID controller and units.
Under Linux, tw_mgmt.log is in the /var/log directory.
For earlier versions of Windows, tw_mgmt.log is in \Documents and Settings\All Users\Application Data\3ware.