User`s guide

StorageWorks RAID Array 200 Controller Installation and Standalone Configuration Utility
7–18 EK–SWRA2–IG. C01
7.3 Changing Configurations
You can change the configuration of your drives in one or more of the following
ways:
• Define a hot spare
• Add or remove a drive group
• Add or remove a logical RAID drive
• Change the RAID level of an existing logical RAID drive
You can change the configuration of the drives by using one of the following
options on the main menu:
• New Configuration
Use the New Configuration option to delete the existing configuration and
create an entirely new one. See Chapter 6: Configuring the Array to
configure with this option.
• View/Update Configuration
Use the View/Update Configuration option to modify the existing
configuration. The major steps involved with modifying an existing
configuration (the specific procedures that you need to follow vary
depending upon how you want to change the configuration) include the
following:
• Creating a drive Group
A drive group defines the drives that you want to work together.
• Creating a logical RAID drive
A logical RAID drive allows your system to see and respond to a drive
group as a single drive, and defines how your system will store data in
that space, based on the RAID level selected. See Chapter 1 for a
description of RAID levels.
• Adding hot spare drives
A hot spare drive is a drive available in your subsystem for the
controller to automatically begin to use in the event of a disk failure.
• Initializing a logical RAID drive
You must initialize a logical RAID drive before you can use it to ensure
consistent RAID parity information.