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LSI Corporation
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12Gb/s MegaRAID SAS Software User Guide

March 2014
Chapter 4: Ctrl-R Utility
LSI SafeStore Encryption Services
NOTE When you create a new configuration, the Ctrl-R Utility shows only the
unconfigured drives. Drives that have existing configurations,
including foreign configurations, do not appear. To use drives with
existing configurations, you first must clear the configuration on those
drives.
6. To clear a foreign configuration, select Clear , and press Enter.
The following dialog appears.
Figure 47 Foreign Configuration – Clear
7. Press OK to clear a foreign configuration.
NOTE The operation cannot be reversed after it is started. Imported drives
appear as Online in the Ctrl-R Utility.
4.9.4.1 Foreign Configurations in Cable Pull and Drive Removal Scenarios
If one or more drives are removed from a configuration, by a cable pull or drive removal, for example, the
configuration on those drives is considered a foreign configuration by the RAID controller.
The following scenarios can occur with cable pulls or drive removals.
NOTE To import the foreign configuration in any of the following scenarios,
you must have all the drives in the enclosure before you perform the
import operation.

Scenario 1: If all the drives in a configuration are removed and reinserted, the controller considers the drives to
have foreign configurations.
Import or clear the foreign configuration. If you select Import , automatic rebuilds will occur in redundant
virtual drives.
NOTE Start a consistency check immediately after the rebuild is complete, to
ensure data integrity for the virtual drives.

Scenario 2: If some of the drives in a configuration are removed and reinserted, the controller considers the drives
to have foreign configurations.
Import or clear the foreign configuration. If you select Import , automatic rebuilds will occur in redundant
virtual drives.