Configuration Options When Creating A Unit - 3Ware 9550SXU-12 User Manual

Configuring Units

Configuration Options When Creating a Unit

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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 105 and "Creating a Unit through 3BM" on page 107.
When you configure a new unit, you specify the following:
• Drives to be included in the unit
• Name of the unit (optional)
• Type of configuration (RAID Level)
• Stripe size, if appropriate for the RAID level
• Boot volume size (optional; can only be specified in 3BM or CLI)
• Multiple Volumes (optional; can only be specified in CLI)
• Initialization Method (3BM only)
• Unit policies that affect how the unit will be handled
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 128 and "Setting Unit
Policies" on page 116.
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."
Drives to be included in the unit
You may include from one to thirty-two 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 12.)
When creating units on the 9690SA controller, you cannot mix SAS and
SATA drives in the same unit.
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 133.) 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 a unit, see "Adding a Drive" on page 142.
3ware SAS/SATA RAID Software User Guide, Version 9.5.1