Lenovo ThinkServer RD240 MegaRAID SAS Software User Guide - Page 167

Import

Page 167 highlights

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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Managing Configurations
4-91
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
Integrated Striping (IS).
The
I
ntegrated RAID solution simplifies the configuration
options and
two types of Integrated RAID (IR): Integrated Mirroring (IM) and
provides firmware support in its host controllers. Lenovo offers