Users Guide

Clearing foreign configuration using RACADM
To clear foreign configuration:
racadm storage clearconfig:<Controller FQDD>
For more information, see the iDRAC RACADM Command Line Reference Guide available at dell.com/idracmanuals.
Resetting controller configuration
You can reset the configuration for a controller. This operation deletes virtual disk drives and unassigns all hot spares on the
controller. It does not erase any data other than removing the disks from the configuration. Reset configuration also does not
remove any foreign configurations. The real-time support of this feature is available only in PERC 9.1 firmware. Reset
configuration does not erase any data. You may recreate the exact same configuration without an initialize operation which may
result in the data being recovered. You must have server control privilege.
NOTE: Resetting the controller configuration does not remove a foreign configuration. To remove a foreign configuration,
perform clear configuration operation.
Resetting controller configuration using web interface
To reset the controller configuration:
1. In the iDRAC Web interface, go to Overview > Storage > Controllers > Troubleshooting.
The Controllers Troubleshooting page is displayed.
2. From the Actions drop-down menu, select Reset Configuration for one or more controllers.
3. For each controller, from the Apply Operation Mode drop-down menu, select when you want to apply the settings.
4. Click Apply.
Based on the selected operation mode, the settings are applied.
Resetting controller configuration using RACADM
To reset the controller configuration:
racadm storage resetconfig:<Controller FQDD>
For more information, see the iDRAC RACADM Command Line Reference Guide available at dell.com/idracmanuals.
Switching the controller mode
On PERC 9.1 and later controllers, you can change the personality of the controller by switching the mode from RAID to HBA.
The controller operates similar to a HBA controller where the drivers are passed through the operating system. The controller
mode change is a staged operation and does not occur in real time. Before you change the mode of the controller from RAID to
HBA, ensure that:
● The RAID controller supports the controller mode change. The option to change the controller mode is not available on
controllers where the RAID personality requires a license.
● All virtual disks must be deleted or removed.
● Hot spares must be deleted or removed.
● Foreign configurations must be deleted or cleared.
● All physical disks that are in a failed state, must be removed.
● Any local security key associated with SEDs must be deleted.
● The controller must not have preserved cache.
● You have server control privileges to switch the controller mode.
NOTE:
Ensure that you back up the foreign configuration, security key, virtual disks, and hot spares before you switch the
mode as the data is deleted.
Managing storage devices 211