Avago Technologies MegaRAID Fast Path Software - Manual (Page 99)

LSI Corporation Confidential | July 2011 Page 99
MegaRAID SAS Software User Guide Chapter 4: WebBIOS Configuration Utility | Creating a Storage Configuration
4.5.2.7 Using Manual
Configuration: RAID 50
RAID 50 provides the features of both RAID 0 and RAID 5. RAID 50 uses both distributed
parity and drive striping across multiple drive groups. It provides high data throughput,
data redundancy, and very good performance. It is best implemented on two RAID 5
drive groups with data striped across both drive groups. Though multiple drive failures
can be tolerated, only one drive failure can be tolerated in each RAID 5 level drive
group.
RAID 50 is appropriate when used with data that requires high reliability, high request
rates, high data transfer, and medium-to-large capacity.
When you select Manual Configuration and click Next, the Drive Group Definition
dialog appears. You use this dialog to select drives to create drive group.
1. Hold the Ctrl key while selecting at least three ready drives in the Drives panel on
the left.
2. Click Add To Array to move the drives to a proposed drive group configuration in
the Drive Groups panel on the right.
If you need to undo the changes, click Reclaim.
3. Click Accept DG to create a RAID 5 drive group.
An icon for a second drive group appears in the right panel.
4. Click the icon for the second drive group to select it.
5. Hold the Ctrl key while selecting at least three more ready drives in the Drives
panel to create a second drive group.
6. Click Add To Array to move the drives to a proposed drive group configuration in
the Drive Groups panel on the right, as shown in Figure 52 .
If you need to undo the changes, click Reclaim.
7. Choose whether to use drive encryption.