Explanation/Reference:
The CALIBRATE command runs raw performance tests on cell disks, enabling you to verify the disk performance before the cell is put online. You must be logged on to the cell as the root user to run CALIBRATE.
Oracle ILOM automatically detects system hardware faults and environmental conditions on the server. If a problem occurs on the server, Oracle ILOM will automatically do the following:
Illuminate the Service Required status indicator (LED) on the server front and back panels.
Identify the faulted component in the Open Problems table.
Record system information about the faulted component or condition in the event log.
References: http://docs.oracle.com/cd/E80920_01/SAGUG/exadata-storage-server- cellcli.htm#SAGUG20617