Preface

About this guide

This guide describes how to use a NetApp® storage appliance as an iSCSI target in a TCP/IP storage network. Specifically, this guide describes how to calculate the size of volumes containing LUNs, how to create and manage LUNs and initiator groups (igroups), and how to monitor iSCSI traffic. The guide assumes you have completed the following tasks:

Referred to the FCP/iSCSI Configuration Guide to ensure that your configuration is supported.
Installed your storage appliance according to the instructions in the Site Requirements Guide, other installation documentation, such as the System Cabinet Guide, and the hardware and service guide for your specific storage appliance.
Configured your filers according to the instructions in the following documents:
- Data ONTAP Software Setup Guide
- If you purchased a software initiator licence, see the NetApp documentation for your iSCSI Initiator Support Kit and the appropriate host-supplied documentation
- If you purchased an iSCSI Host Bus Adapter, see the NetApp documentation for your SAN Host Attach Kit for iSCSI Protocol on your host, which you can find at http://now.corp.netapp.com/NOW/knowledge/docs/client_filer_index.shtml.

Audience

This guide is for system and storage administrators who are familiar with operating systems, such as Windows® 2000 and UNIX®, that run on the hosts that access storage managed by NetApp storage appliances. It also assumes that you know how block access protocols are used for block sharing or transfers. This guide doesn't cover basic system or network administration topics, such as IP addressing, routing, and network topology.

Terminology

This guide uses the following terms:

Enter refers to pressing one or more keys on the keyboard and then pressing the Enter key.
Filer refers to any NetApp storage appliance.
Type refers to pressing one or more keys on the keyboard.

Command conventions

In examples that illustrate commands executed on a UNIX workstation the command syntax and output might differ, depending on your version of UNIX.

Keyboard conventions

When describing key combinations, this guide uses the hyphen (-) to separate individual keys. For example, Ctrl-D means pressing the Control and D keys simultaneously. This guide uses the term Enter to refer to the key that generates a carriage return, although the key is named Return on some keyboards.

Typographic conventions

The following table describes typographic conventions used in this guide.

Convention	Type of information
Italic font	Words or characters that require special attention. Placeholders for information you must supply. For example, if the guide says to enter the `arp -d` hostname command, you enter the characters arp -d followed by the actual name of the host. Book titles in cross-references.
`Monospaced` font	Command and daemon names. Information displayed on the system console or other computer monitors. The contents of files.
`Bold monospaced` font	Words or characters you type. What you type is always shown in lowercase letters, unless you must type it in uppercase letters.

Convention

Type of information

Italic font

Words or characters that require special attention.

Placeholders for information you must supply. For example, if the guide says to enter the arp -d hostname command, you enter the characters arp -d followed by the actual name of the host.

Book titles in cross-references.

Monospaced font

Command and daemon names.

Information displayed on the system console or other computer monitors.

The contents of files.

Bold monospaced font

Words or characters you type. What you type is always shown in lowercase letters, unless you must type it in uppercase letters.

Special messages

This guide contains special messages that are described as follows:

Note
A note contains important information that helps you install or operate the system efficiently.

Caution
A caution contains instructions that you must follow to avoid damage to the equipment, a system crash, or loss of data.