Mirroring disk which is under LVM control

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We recently acquired Dell rack-optimized server.  The supplied Open
Manage CD took care of the installation of RHES 4.0.  It simply asked
for configuration information like disk partitions, network settings, etc.

After the installation, I realized that the LVM is enabled.

The box comes with two (2) SATA disks and I intend to mirror them for
added data protection.  My problem is, the first disk is already under
LVM control.  Would it still be possible to mirror the disk?

Actually, I wouldn't mind reinstalling the RHES 4.0 but the problem is,
the server uses Intel ICH7R SATA disk controller and the installation
kernel does not have the driver preloaded.  I already tried to
re-install the OS and load the driver by using a driver disk, but still,
the installation kernel cannot detect the SATA disks, hence the
installation cannot proceed.

So I guess my best direction is to try to mirror the first disk.  Is
there anyway to go around LVM?

TIA


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