Preface

About this guide

This guide provides general information about the NetApp® DiskShelf14mk2 AT (DS14mk2 AT), a roadmap on the installation, and information on managing the disk shelf that connects to storage appliances.

Audience

This guide is for system administrators who are familiar with operating systems that run on the storage system's clients, such as UNIX®, Windows 95^TM, Windows NT®, Windows® 2000, and Windows XP. The procedures in this guide describe replacement, upgrade, and maintenance tasks for personnel with the following skills and experience:

Working familiarity with small computer system hardware and operation
Basic understanding of common networking concepts and practices
Working familiarity with accepted tools and procedures for installing and operating sensitive electronic equipment

Terminology

This guide uses the following terms:

Disk shelf refers to a DS14mk2 AT disk shelf.
Storage appliance refers to those Fibre Attached Storage (FAS) appliances that the disk shelves connect to.
Storage system refers to the FAS appliances and disk shelves as one unit.
Loop refers to one or more daisy-chained disk shelves connected to a NetApp appliance.
AT-FCX refers to the AT-Fibre Channel module on the back of the disk shelf that connects to a FAS appliance.
Note
For information about the AT-FC module on the back of the disk shelf that connects to a NearStore® storage engine, see the R200 Hardware and Service Guide.
Module refers to the AT-FCX module.
Device carrier refers to the container encasing a fan/power supply unit or a disk.
Disk applies to any ATA disk encased in its device carrier.

Formatting conventions

The following table lists the kinds of formatting this guide uses to identify special information.

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

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.