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12Gb/s MegaRAID SAS Software User Guide

March 2014
Chapter 4: Ctrl-R Utility
Overview
Chapter 4: Ctrl-R Utility
This chapter describes the Ctrl-R Utility, a BIOS configuration utility, that lets you create and manage RAID
configurations on LSI SAS controllers. You can configure the drive groups and drives on the system before the
operating system has been installed.
4.1 Overview
The Ctrl-R Utility resides in the SAS controller BIOS and operates independently of the operating system.
You can use the Ctrl-R Utility to perform tasks such as these:

Create drive groups and virtual drives for storage configurations

View controller, physical drive, virtual drive, enclosure, and battery backup unit (BBU) properties, and change
parameters

Delete virtual drives

Modify power settings

Import and clear foreign configurations

Initialize virtual drives

Check configurations for data consistency

Create CacheCade virtual drives
4.2 Starting the Ctrl-R Utility
When you boot the system, perform the following steps to start the Ctrl-R Utility:
1. When the host computer is booting, press and hold the Ctrl key, and press the R key when the following text
appears on the dialog:
Copyright© LSI Corporation
Press <Ctrl><R> for Ctrl-R
2. Based on the controllers on the system, one of the two following scenarios occurs:
—
If the system has multiple SAS controllers, a controller selection dialog appears. Select a controller and press
Enter. The Ctrl-R Utility main menu screen appears.
—
If the system has only one SAS controller, the Ctrl-R Utility main menu screen appears.
4.3 Exiting the Ctrl-R Utility
To exit the Ctrl-R Utility, perform these steps:
1. Perform one of these actions:
—
If you are not in a dialog, press Esc once.
—
If you are in a dialog, press Esc twice (once to exit the dialog, and the second time to exit the utility).
A confirmation message box appears.
2. Press OK to exit the utility.