Lenovo ThinkServer RD240 MegaRAID SAS Software User Guide - Page 167
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1. 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 4.8.1, "Running a Consistency Check," for more information about checking data consistency. 2. 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 4.8.1, "Running a Consistency Check," for more information about checking data consistency. 3. 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 then automatically rebuilt. Automatic rebuilds will occur in redundant virtual drives. 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 with. 4.8.3.2 Importing Foreign Configurations from Integrated RAID to MegaRAID The Integrated RAID solution simplifies the configuration options and provides firmware support in its host controllers. Lenovo offers two types of Integrated RAID (IR): Integrated Mirroring (IM) and Integrated Striping (IS). Managing Configurations 4-91
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