Preface

About this guide

This guide describes how to set up, install, connect, and monitor the NetApp® SCSI DiskShelf12 (SDS12).

Audience

This guide is for qualified system administrators and service personnel who are familiar with Network Appliance^TM filers and how the Network File System (NFS), Common Internet File System (CIFS), and Hypertext Transfer Protocol (HTTP) protocols are used to share and transfer files.

Terminology

This guide uses the following terms:

Disk shelf refers to any SCSI disk shelf model.
Filer refers to those NetApp filers that support the disk shelves.
Device carrier refers to any container that encases a power supply or disk.
Disk applies to any 18-GB or 36-GB SCSI disk encased in its device carrier.
SSM refers to the SCSI Services Module card that provides monitoring, reporting, and control of the SDS12.

Command conventions

You can enter filer commands on the system console or from any client that can obtain access to the filer using a Telnet session. This guide uses the command syntax and output of SunOS 4.1x in examples of commands run on a UNIX workstation. If you use a different version of UNIX, the command syntax and output might be different.

Formatting conventions

The following table lists different character formats used in this guide to set off special information.

Formatting convention	Type of information
Italic type	Words or characters that require special attention. File names and path names. Placeholders for information you must supply. For example, if the guide requires you to enter the fctest adaptername command, you enter the characters "fctest" followed by the actual name of the adapter. Man page names. 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 your program is case-sensitive and uppercase letters are necessary for it to work properly.

Keyboard conventions

This guide uses capitalization and some abbreviations to refer to the keys on the keyboard. The keys on your keyboard might not be labeled exactly as they are in this guide.

What is in this guide...	What it means...
hyphen (-)	Used to separate individual keys. For example, Ctrl-D means holding down the Ctrl key while pressing the D key.
Enter	Used to refer to the key that generates a carriage return, although the key is named Return on some keyboards.
type	Used to mean pressing one or more keys on the keyboard.
enter	Used to mean pressing one or more keys and then pressing the Enter key.

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.

WARNING
A warning contains instructions that you must follow to avoid personal injury.