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v The integrated SAS/SATA controller with RAID capabilities supports the
following features:
– Integrated Mirroring (IM) with hot-spare support (also known as RAID 1)
Use this option to create an integrated array of two disks plus up to two
optional hot spare. All data on the primary disk can be migrated.
– Integrated Mirroring Enhanced (IME) with hot-spare support (also known as
RAID 1E)
Use this option to create an integrated mirror enhanced array of three to eight
disks, including up to two optional hot spare. All data on the array disks will
be deleted.
– Integrated Striping (IS) (also known as RAID 0)
Use this option to create an integrated striping array of two to eight disks. All
data on the array disk will be deleted.
v
Hard disk drive capacities affect how you create arrays. The drives in an array
can have different capacities, but the RAID controller treats them as if they all
have the capacity of the smallest hard disk drive.
v If you use an integrated SAS/SATA controller with RAID capabilities to
configure a RAID 1 (mirrored) array after you have installed the operating
system, you will lose access to any data or applications that were previously
stored on the secondary drive of the mirrored pair.
v If you install a different type of RAID controller, see the documentation that
comes with the controller for information about viewing and changing SAS
settings for attached devices.
To
start the LSI Configuration Utility program, complete the following steps:
1. Turn on the server.
2. When the message <<< Press <CTRL-C> to start LSI Configuration Utility
>>> is displayed, press Ctrl-C. If an administrator password has been set, you
are prompted to type the password.
3. Use the arrow keys to select a controller (channel) from the list of adapters;
then, press Enter.
4. To change the settings of the selected items, follow the instructions on the
screen. If you select Raid Properties, SAS Topology, or Advanced Adapter
Properties, additional screens are displayed.
When
you have finished changing settings, press Esc to exit from the program;
select Save to save the settings that you have changed.
See the User Guide on the ThinkServer Documentation DVD for more information
about the LSI Configuration Utility program.
Chapter 4. Configuring the server 49