JavaScript is required to for searching.
Skip Navigation Links
Exit Print View
Oracle® ZFS Storage Appliance Administration Guide
Oracle Technology Network
Print View
search filter icon
search icon

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

Chapter 14 Shadow Migration

Data Migration

Traditional Data Migration

Migration via Synchronization

Migration via External Interposition

Shadow Migration

Shadow migration behavior

Restrictions on Shadow Source

Shadow File System Semantics During Migration

Identity and ACL Migration

Shadow Migration Management

Creating a Shadow Filesystem

Managing Background Migration

Handling Migration Errors

Monitoring Migration Progress

Canceling Migration

Snapshots of Shadow File Systems

Backing Up Shadow File Systems

Replicating Shadow File Systems

Shadow Migration Analytics

Shadow Migration Requests

Shadow Migration Bytes

Shadow migration operations

Migrating Local File Systems

Shadow Migration Tasks

Testing Potential Shadow Migration

Migrating Data from an Active NFS Server

Chapter 15 CLI Scripting

Chapter 16 Maintenance Workflows

Chapter 17 Integration


Backing Up Shadow File Systems

Filesystems that are actively migrating shadow data can be backed using NDMP as with any other filesystem. The shadow setting is preserved with the backup stream, but will be restored only if a complete restore of the filesystem is done and the share doesn't already exist. Restoring individual files from such a backup stream or restoring into existing filesystems may result in inconsistent state or data corruption. During the full filesystem restore, the filesystem will be in an inconsistent state (beyond the normal inconsistency of a partial restore) and shadow migration will not be active. Only when the restore is completed is the shadow setting restored. If the shadow source is no longer present or has moved, the administrator can observe any errors and correct them as necessary.