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Chapter 3: Creating Mirrored Volumes | Creating Mirrored Volumes SAS2 Integrated RAID Solution User Guide
Page 14 LSI Corporation Confidential
| August 2010
Disks must have 512-byte blocks and must not have removable media.
Integrated mirroring volumes must have two disks, Integrated Mirroring Enhanced
volumes can have three-to-ten disks, and Integrated Mirroring + Striping volumes
can have an even number of disks ranging from four-to-ten disks.
NOTE: LSI strongly recommends that you create global hot spare disks for all mirrored
volumes to increase the level of data protection. If a disk in a mirrored volume fails, the
Integrated RAID firmware rebuilds it using one of the global hot spares, and the data is
safe. If you create two mirrored volumes on an LSI SAS 2 controller, either of the two
mirrored volumes can use the global hot spares if a disk fails.
3.2.1 Creating an Integrated Mirroring
Volume
Follow these steps to create a two-disk Integrated Mirroring (RAID 1) volume with the
SAS2 BIOS CU. The steps begin with the Adapter List window that appears when the
SAS2 BIOS CU starts:
1. On the Adapter List window, use the arrow keys to select an LSI SAS adapter, and
then press Enter.
The Adapter Properties window appears, as the following figure shows.
Figure 5: Adapter Properties Window
2. Use the arrow keys to select RAID Properties, and then press Enter.
The Create Array window appears.
3. Select Create RAID 1 Volume.
The Create New Array window appears.