Filter
Top Products
SAS2 Integrated RAID Solution User Guide Chapter 3: Creating Mirrored Volumes | Mirrored Volume Configuration Overview
LSI Corporation Confidential
| August 2010 Page 13
Chapter 3
3.1 Mirrored Volume
Configuration Overview
The LSI SAS2 BIOS CU is a menu-driven utility program that enables you to easily
configure and manage Integrated RAID volumes. You can use the SAS2 BIOS CU to
create one or two mirrored volumes on each LSI SAS2 controller, with up to two
optional global hot spare disks. You must connect all disks in a mirrored volume to the
same LSI SAS2 controller.
Although you can use disks of different size in mirrored volumes, the smallest disk in
the volume determines the logical size of all disks in the volume. In other words, the
volume does not use the excess space of the higher-capacity member disk(s). For
example, if you create an Integrated Mirroring Enhanced volume with two 100-GB disks
and two 120-GB disks, the volume uses only 100 GB on each of the 120-GB disks.
Refer to Chapter 2, Overview of Integrated RAID Mirrored Volumes, for more information
about the features of Integrated Mirroring, Integrated Mirroring + Striping, and
Integrated Mirroring Enhanced volumes.
3.2 Creating Mirrored Volumes The SAS2 BIOS CU is part of the Fusion-MPT BIOS. When the BIOS loads during the
startup sequence and you see the message about the LSI Configuration Utility, press
Ctrl-C to start the SAS2 BIOS CU. After you do this, the message changes to:
Please wait, invoking SAS Configuration Utility...
After a brief pause, the main menu (Adapter List window) of the SAS2 BIOS CU appears.
On some systems, however, the following message appears next:
LSI Corp Configuration Utility will load following
initialization!
In this case, the SAS2 BIOS CU loads after the system completes its power-on self-test.
You can configure one or two Integrated Mirroring, Integrated Mirroring + Striping, and
Integrated Mirroring Enhanced volumes on each LSI SAS2 controller. You can also
configure one mirrored volume and one Integrated Striping volume on the same
controller, up to a maximum of 14 disk drives for the two volumes. This includes one or
two optional hot spare disks for the mirrored volume(s).
All physical disks in a volume must be either SATA (with extended command set
support) or SAS (with SMART support). You cannot combine SAS and SATA disks in
the same volume. However, you can create one volume with SAS disks and a second
volume with SATA disks on the same controller.
Creating Mirrored Volumes
This chapter explains how to create Integrated Mirroring, Integrated Mirroring +
Striping, and Integrated Mirroring Enhanced volumes with the LSI SAS2 BIOS
Configuration Utility (SAS2 BIOS CU).