Avago Technologies MegaRAID Fast Path Software - Manual (Page 470)

Page 470 LSI Corporation Confidential | July 2011
MegaRAID SAS Software User Guide Chapter 11: Using MegaRAID Advanced Software | LSI SafeStore Encryption Services
11.6.12.1 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. Use the Foreign
Configuration Preview dialog to import or clear the foreign configuration in each case.
NOTE: If you want to import the foreign configuration in any of the following scenarios,
you must have all of the drives in the enclosure before you perform the import
operation.
 Scenario #1: If all of the drives in a configuration are removed and re-inserted, 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. See
Section 10.2, Running a Consistency Check for
more information about checking data consistency.
 Scenario #2: If some of the drives in a configuration are removed and re-inserted,
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. See
Section 10.2, Running a Consistency Check for
more information about checking data consistency.
 Scenario #3: If all of the drives in a virtual drive are removed, but at different times,
and re-inserted, the controller considers the drives to have foreign configurations.
Import or clear the foreign configuration. If you select Import, all drives that were
pulled before the virtual drive became offline will be imported and will be
automatically rebuilt. Automatic rebuilds will occur in redundant virtual drives.
 Scenario #4: If the drives in a non-redundant virtual drive are removed, the
controller considers the drives to have foreign configurations.
Import or clear the foreign configuration. No rebuilds will occur after the import
operation because there is no redundant data to rebuild the drives.