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Configuring Units

104 3ware SAS/SATA RAID Software User Guide, Version 9.5.1

Multiple Volumes

When you create a unit through CLI, you have the option of creating up to

four volumes with variable, defined sizes. If you have enabled the Auto-

Carving policy, these units will be created first, and then the carve size will be

used to segment the remaining drive space into additional volumes. For

details, see the /cx add command in the 3ware SAS/SATA RAID Controller

CLI Guide.

Initialization Method

In 3BM, you can choose to do a foreground (default) or background

initialization of the unit. 3DM and CLI can only use background initialization

when creating a unit.

A foreground initialization will take place before the system is booted. It can

take up to several hours, depending on the size of the unit.

A background initialization allows you to have immediate use of the unit, but

will take longer and slows down performance of the unit until it completes.

If your unit starts a foreground initialization and you want to use it

immediately, you can press

Esc and the unit will switch to using background

initialization.

Unit policies

Several unit policies are set when you create a new unit:

• Write Cache (enabled, by default)

• Drive Queuing (enabled, by default)

• Ignore ECC (Continue on Source Error When Rebuilding (disabled, by

default))

• StorSave Profile (Protection, by default)

• Auto Verify (enabled, by default)

• Rapid RAID Recovery (enabled, by default)

The particular policies that you can adjust when you create the unit vary,

depending on which program you are using: 3DM, 3BM, or the CLI.

You can change all of these policies after the unit has been created, with one

exception. If Rapid RAID Recovery is disabled, it cannot be enabled later.

For a summary of what these policies do, see the discussion under “Setting

Unit Policies” on page 116. For how to adjust each one, see the procedures

later in this chapter.

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AMCC 3ware 9650SE-2LP Guía de usuario Pagina 116