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Oracle Solaris ZFS Administration Guide
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Document Information


1.  Oracle Solaris ZFS File System (Introduction)

2.  Getting Started With Oracle Solaris ZFS

3.  Oracle Solaris ZFS and Traditional File System Differences

4.  Managing Oracle Solaris ZFS Storage Pools

5.  Installing and Booting an Oracle Solaris ZFS Root File System

6.  Managing Oracle Solaris ZFS File Systems

7.  Working With Oracle Solaris ZFS Snapshots and Clones

8.  Using ACLs to Protect Oracle Solaris ZFS Files

9.  Oracle Solaris ZFS Delegated Administration

10.  Oracle Solaris ZFS Advanced Topics

11.  Oracle Solaris ZFS Troubleshooting and Pool Recovery

A.  Oracle Solaris ZFS Version Descriptions



The Oracle Solaris ZFS Administration Guide provides information about setting up and managing Oracle Solaris ZFS file systems.

This guide contains information for both SPARC based and x86 based systems.

Note - This Oracle Solaris release supports systems that use the SPARC and x86 families of processor architectures: UltraSPARC, SPARC64, AMD64, Pentium, and Xeon EM64T. The supported systems appear in the Solaris 10 Hardware Compatibility List at This document cites any implementation differences between the platform types.

In this document these x86 terms mean the following:

For supported systems, see the Solaris 10 Hardware Compatibility List.

Who Should Use This Book

This guide is intended for anyone who is interested in setting up and managing Oracle Solaris ZFS file systems. Experience using the Oracle Solaris operating system (OS) or another UNIX version is recommended.

How This Book Is Organized

The following table describes the chapters in this book.

Provides an overview of ZFS and its features and benefits. It also covers some basic concepts and terminology.
Provides step-by-step instructions on setting up basic ZFS configurations with basic pools and file systems. This chapter also provides the hardware and software required to create ZFS file systems.
Identifies important features that make ZFS significantly different from traditional file systems. Understanding these key differences will help reduce confusion when you use traditional tools to interact with ZFS.
Provides a detailed description of how to create and administer ZFS storage pools.
Describes how to install and boot a ZFS file system. Migrating a UFS root file system to a ZFS root file system by using Oracle Solaris Live Upgrade is also covered.
Provides detailed information about managing ZFS file systems. Included are such concepts as the hierarchical file system layout, property inheritance, and automatic mount point management and share interactions.
Describes how to create and administer ZFS snapshots and clones.
Describes how to use access control lists (ACLs) to protect your ZFS files by providing more granular permissions than the standard UNIX permissions.
Describes how to use ZFS delegated administration to allow nonprivileged users to perform ZFS administration tasks.
Provides information about using ZFS volumes, using ZFS on an Oracle Solaris system with zones installed, and using alternate root pools.
Describes how to identify ZFS failures and how to recover from them. Steps for preventing failures are covered as well.
Describes available ZFS versions, features of each version, and the Solaris OS that provides the ZFS version and feature.

Related Books

Related information about general Oracle Solaris system administration topics can be found in the following books:

Documentation, Support, and Training

See the following web sites for additional resources:

Oracle Welcomes Your Comments

Oracle welcomes your comments and suggestions on the quality and usefulness of its documentation. If you find any errors or have any other suggestions for improvement, go to and click Feedback. Indicate the title and part number of the documentation along with the chapter, section, and page number, if available. Please let us know if you want a reply.

Oracle Technology Network offers a range of resources related to Oracle software:

Typographic Conventions

The following table describes the typographic conventions that are used in this book.

Table P-1 Typographic Conventions

The names of commands, files, and directories, and onscreen computer output
Edit your .login file.

Use ls -a to list all files.

machine_name% you have mail.

What you type, contrasted with onscreen computer output
machine_name% su


Placeholder: replace with a real name or value
The command to remove a file is rm filename.
Book titles, new terms, and terms to be emphasized
Read Chapter 6 in the User's Guide.

A cache is a copy that is stored locally.

Do not save the file.

Note: Some emphasized items appear bold online.

Shell Prompts in Command Examples

The following table shows the default UNIX system prompt and superuser prompt for shells that are included in the Oracle Solaris OS. Note that the default system prompt that is displayed in command examples varies, depending on the Oracle Solaris release.

Table P-2 Shell Prompts

Bash shell, Korn shell, and Bourne shell
Bash shell, Korn shell, and Bourne shell for superuser
C shell
C shell for superuser