Oracle Solaris ZFS Administration Guide


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.



Chapter 1, Oracle Solaris ZFS File System (Introduction)

Provides an overview of ZFS and its features and benefits. It also covers some basic concepts and terminology. 

Chapter 2, Getting Started With Oracle Solaris ZFS

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. 

Chapter 3, Oracle Solaris ZFS and Traditional File System Differences

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. 

Chapter 4, Managing Oracle Solaris ZFS Storage Pools

Provides a detailed description of how to create and administer ZFS storage pools. 

Chapter 5, Installing and Booting an Oracle Solaris ZFS Root File System

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. 

Chapter 6, Managing Oracle Solaris ZFS File Systems

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. 

Chapter 7, Working With Oracle Solaris ZFS Snapshots and Clones

Describes how to create and administer ZFS snapshots and clones. 

Chapter 8, Using ACLs to Protect Oracle Solaris ZFS Files

Describes how to use access control lists (ACLs) to protect your ZFS files by providing more granular permissions than the standard UNIX permissions. 

Chapter 9, Oracle Solaris ZFS Delegated Administration

Describes how to use ZFS delegated administration to allow nonprivileged users to perform ZFS administration tasks. 

Chapter 10, Oracle Solaris ZFS Advanced Topics

Provides information about using ZFS volumes, using ZFS on an Oracle Solaris system with zones installed, and using alternate root pools. 

Chapter 11, Oracle Solaris ZFS Troubleshooting and Pool Recovery

Describes how to identify ZFS failures and how to recover from them. Steps for preventing failures are covered as well. 

Appendix A, Oracle Solaris ZFS Version Descriptions

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:

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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