User`s guide

Chapter 6. Configuring Your Array
EK–SWRA2–IG. C01 6–27
6.6 Configuring Interactively
Configure interactively to do the following:
• Create one or more drive groups
• Create one or more logical RAID drives
• Create a logical RAID drive of RAID level 0, 0 + 1, or 1
• Define spare drives
• Specify caching policy
To configure interactively, you must do the following:
• Create one or more drive groups
A drive group defines the drives that you want to work together as the
available space for the logical RAID drives that you will create.
• Create Logical RAID drives
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.
• Add hot spares (optional)
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 from a
redundant logical RAID drive, to store the data of the failed drive.
• Initialize the logical RAID drives
Initialize a logical RAID drive before you use it to ensure consistent RAID
parity information.
• Save your configuration to diskette
Your RAID subsystem stores the configuration information on flash
EEPROM/NVRAM on the RAID controller. In the event that your RAID
controller fails, you must restore your configuration from a backup copy
on floppy disk, or create a new configuration to access the data on your
subsystem.