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Oracle® ZFS Storage Appliance Administration Guide
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Document Information

Using This Documentation

Chapter 1 Oracle ZFS Storage Appliance Overview

Chapter 2 Status

Chapter 3 Initial Configuration

Chapter 4 Network Configuration

Chapter 5 Storage Configuration

Chapter 6 Storage Area Network Configuration

Chapter 7 User Configuration

Chapter 8 Setting ZFSSA Preferences

Chapter 9 Alert Configuration

Chapter 10 Cluster Configuration

Chapter 11 ZFSSA Services

Chapter 12 Shares, Projects, and Schema

Chapter 13 Replication

Replication Overview

Understanding Replication

Replication Terminology

Project Replication Targets

Project Replication Actions and Packages

Project Replication Storage Pools

Project-level vs. Share-level Replication

Configuring Project Replication

Creating and Editing Targets

Creating and Editing Targets in the BUI

Creating and Editing Targets in the CLI

Creating and Editing Actions

Creating and Editing Actions in the BUI

Creating and Editing Actions in the CLI

Replication Modes: Scheduled or Continuous

Replication - Including Intermediate Snapshots

Replication - Sending and Canceling Updates

Managing Replication Packages

Managing Replication Packages in the BUI

Managing Replication Packages in the CLI

Canceling Replication Updates

Disabling a Package

Cloning a Package or Individual Shares

Exporting Replicated Filesystems

Severing Replication

Reversing the Direction of Replication

Destroying a Replication Package

Replication Tasks

Reversing Replication - Establish Replication

Reverse Replication

Reversing Replication - Simulate Recovery from a Disaster

Reverse Replication

Reversing Replication - Resume Replication from Production System

Reverse Replication

Forcing Replication to use a Static Route

Force Replication to use a Static Route

Cloning a Received Replication Project

Remote Replication Details



Replication Audit Events

Replication and Clustering

Snapshots and Data Consistency

Snapshot Management

Replicating iSCSI Configuration

Replicating Clones

Observing Replication

Replication Failures

Replication Compatibility

Upgrading From 2009.Q3 and Earlier

Chapter 14 Shadow Migration

Chapter 15 CLI Scripting

Chapter 16 Maintenance Workflows

Chapter 17 Integration


Exporting Replicated Filesystems

Replicated filesystems can be exported read-only to NAS clients. This can be used to verify the replicated data or to perform backups or other intensive operations on the replicated data (offloading such work from the source ZFSSA).

The filesystem's contents always match the most recently received replication snapshot for that filesystem. This may be newer than the most recently received snapshot for the entire package, and it may not match the most recent snapshot for other shares in the same package. See Snapshots and Data Consistency for details.

Replication updates are applied atomically at the filesystem level. Clients looking at replicated files will see replication updates as an instantaneous change in the underlying filesystem. Clients working with files deleted in the most recent update will see errors. Clients working with files changed in the most recent update will immediately see the updated contents.

Replicated filesystems are not exported by default. They are exported by modifying the "exported" property of the project or share using the BUI or CLI:

Figure 13-7  Inherited Properties

image:Inherited Properties

This property is inherited like other share properties. This property is not shown for local projects and shares because they are always exported. Additionally, severing replication (which converts the package into a local project) causes the package's shares to become exported.

Replicated LUNs currently cannot be exported. They must be first cloned or the replication package severed in order to export their contents.