Configuring a New Unit
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Configuration Options When Creating a Unit
This section provides an overview of the choices you have when configuring
a new unit. For step-by-step instructions, see “Creating a Unit through 3DM”
on page 99 and “Creating a Unit through 3BM” on page 102.
When you configure a new unit, you specify the following:
•
Drives to be included in the unit
•
Type of configuration (RAID Level)
•
Name of the unit (optional)
•
Stripe size, if appropriate for the RAID level
•
Unit policies that affect how the unit will be handled
•
Boot volume size (optional; can only be specified in 3BM)
You can make some types of changes to the RAID configuration later, and
you can change the unit name and the unit policies. For details, see “Changing
An Existing Configuration by Migrating” on page 120 and “Setting Unit
Policies” on page 111.
Drives to be included in the unit
You may include from one to sixteen drives in the unit, depending on the
number of drives available and the model of the controller you have. (For
information about how many drives to select for a given RAID level, see
“Determining What RAID Level to Use” on page 10.)
Available drives are those that are not currently part of a unit. If you want to
use drives that are currently part of a different unit, you must first delete that
unit to make the drives available. (For details, see “Deleting a Unit” on
page 125.) If drives are listed under “Incomplete Drives and Others,” they
must be deleted before they can be used.
If you want to add drives to be used in the unit, see “Adding a Drive” on
page 134.
Type of configuration (RAID Level)
Available configuration types include RAID 0, RAID 1, RAID 5, RAID 6,
RAID 10, RAID 50, and Single Disk. For information about the different
RAID levels, see “Understanding RAID Concepts and Levels” on page 3.
Note:
If you will install the operating system on and boot from a unit managed
through the new 3ware RAID controller, see Chapter 3, “First-Time RAID
Configuration Using 3BM.”
