Running RAID Utility
The RAID Utility application is in /Applications/Utilities/. You can open it from there
anytime you want to check the status of the RAID components in your computer.
You can also run RAID Utility from the Installer when you start up your computer using
the Mac OS X or Mac OS X Server installation disc that comes with the computer.
Choose Utilities > RAID Utility while you are in the Installer.
If you plan to perform any setup tasks that affect the computer’s startup disk (for
example, migrating the startup disk or otherwise reusing the startup disk to create new
RAID sets or volumes), you need to start up the computer from the installation disc that
comes with your computer or from an external disk on which you have installed
Mac OS X or Mac OS X Server using that installation disc.