User`s guide

Chapter 7. Maintaining the Array with the Standalone Configuration Utility
EK–SWRA2–IG. C01 7–27
7.3.2 Creating a Logical RAID Drive
You create a logical RAID drive with part, or all of the space available on a
drive group. The logical RAID drive allows your operating system to see and
respond to the selected space of the drive group as one physical drive. The
logical RAID drive also defines how your system will store data on that disk
space, based on the RAID level selected. To the operating system, there is no
difference between a logical RAID drive and a single physical drive on a
conventional disk controller.
You can create a maximum of 8 logical RAID drives per controller.
NOTE
For redundant RAID configurations, the controller
must use some of the space for data redundancy
purposes. See Table 7–2 for information on how
much space is available on which you can store
unique data for each RAID level.
Creating a logical RAID Drive requires the following procedures:
• Defining a logical RAID Drive
• Choosing a write caching policy
• Saving the logical RAID Drive configuration
7.3.2.1 Creating a logical RAID Drive
To create a logical RAID drive, follow these steps:
1. Press the Enter key to select the Define Logical Drive option from the
View/Update Configuration menu. The Logical Drive Definition menu
screen appears, as shown in Figure 7–14. The Logical Drive Definition menu
screen displays an option menu, a table of the drive groups available for
selection as logical RAID drives, and a table of the existing logical RAID
drives.