Data ONTAP 7.3 Data Protection Online Backup and Recovery Guide
Copyright information
Trademark information
About this guide
Audience
Accessing Data ONTAP man pages
Terminology
FilerView as an alternative to the command-line interface
Command, keyboard, and typographic conventions
Special messages
What data protection is
Why data needs protection
Methods of protecting data
What online backup and recovery is
Advantages of online backup and recovery
Disadvantages of online backup and recovery
Methods for online backup and recovery
What the NVFAIL feature is
What a data loss disaster is
How to determine a disaster
What tools to use to protect against data loss disasters
How to protect data in a SAN environment
Policy-based automated data protection using Protection Manager
Snapshot management
What a Snapshot copy is
How Snapshot copies handle file permissions
What you can do with Snapshot copies
About user access to Snapshot copies
Access to Snapshot copies over NFS
Access to Snapshot copies over CIFS
Accessing Snapshot copies from CIFS clients
Disabling and enabling client access to Snapshot copies
How Data ONTAP Snapshot copies work in an iSCSI or FCP network
Using Snapshot copies in the SAN environment
Relationship between a LUN and a Snapshot copy
Restoring files from Snapshot copies
Snapshot restoration using Shadow Copy Client tools
Creating Snapshot schedules
User-specified Snapshot schedules
Snapshot schedule conflicts
Displaying the Snapshot schedule at the command line
Displaying the Snapshot schedule using FilerView
What the snap sched command arguments mean
Strategies for creating a Snapshot schedule
Changing the Snapshot schedule
Disabling and enabling automatic Snapshot copies
Creating Snapshot copies
Creating Snapshot copies using FilerView
Why you need to access a particular Snapshot copy
Finding the Snapshot copy you need from an NFS client
How to determine access times from an NFS client
Finding the Snapshot copy you need from a CIFS client
How to determine access times from a CIFS client
Understanding Snapshot disk consumption
How Snapshot copies consume disk space
How changing file content consumes disk space
Monitoring Snapshot disk consumption
Displaying Snapshot disk consumption statistics
How the snap list output is calculated
How to use cumulative Snapshot values
Displaying Snapshot copy use and dependencies
snap list performance after a snap restore file operation
What the Snapshot reserve is
Snapshot reserve management tasks
Using deleted active file disk space
Snapshot copies can exceed reserve
Recovering disk space for file system use
Changing the Snapshot reserve
What file folding means and how it saves disk space
Enabling and disabling file folding
Displaying the rate of change of data, between two Snapshot copies
Displaying the rate of change of data, between a Snapshot copy and the active file system
Deleting Snapshot copies automatically
Deleting Snapshot copies automatically without options
Viewing current Snapshot copy autodelete settings
Restoring default Snapshot copy autodelete settings
Disabling a Snapshot copy autodelete policy
Displaying space reclaimed from deleted Snapshot copies
How to determine which Snapshot copies to delete on the basis of size
Deleting a Snapshot copy manually
Deleting a Snapshot copy manually if the Snapshot copy is busy or locked
Renaming Snapshot copies
Data recovery using SnapRestore
What SnapRestore is
What SnapRestore does
When to use SnapRestore
Considerations before using SnapRestore
Prerequisites for using SnapRestore
General cautions for using SnapRestore
Caution about reverting the root volume
Preserving configuration files
Reverting a root volume before using SnapRestore
Installing the SnapRestore license
Reverting a volume to a selected Snapshot copy
Reverting a file to a selected Snapshot copy
Obtaining correct incremental backups after reversion
Data protection using SnapMirror
Overview of SnapMirror
How SnapMirror works
What to use SnapMirror for
What synchronous SnapMirror is
How SnapMirror replicates data synchronously
How synchronous SnapMirror handles network issues
Guidelines for growing an aggregate
What SnapMirror over Fibre Channel is
Hardware requirements
Supported Fibre Channel switches
SnapMirror over Fibre Channel topology
SnapMirror traffic zones
Requirements for deploying SnapMirror over Fibre Channel
Functionality supported by SnapMirror over Fibre Channel
Configuring SnapMirror over Fibre Channel
Deployment of SnapMirror
Supported SnapMirror configurations
SnapMirror deployment variations
Maximum number of concurrent replication operations
A storage system used as a NearStore system - the NearStore personality
Enabling NearStore functionality
Factors that affect the maximum number of concurrent operations
Maximum number of transfer resources in an active/active configuration
Migration from traditional volumes to FlexVol volumes
Symmetrical disk geometry
SnapMirror setup commands and configuration files
Considerations for the use of SnapMirror
Prerequisites for SnapMirror
Restrictions while using SnapMirror
Points of caution while using SnapMirror
Recommended actions while using SnapMirror
Deduplication with volume SnapMirror
Possible conflicts between SnapMirror operation and Snapshot copy schedule
Destination accessibility when using CIFS with SnapMirror
Adjusting the TCP window size for SnapMirror
Firewall usage with SnapMirror
Considerations before using synchronous SnapMirror
Estimating aggregate size for synchronous SnapMirror destination volumes
Setting up a basic SnapMirror operation
SnapMirror over multiple paths
Setting up SnapMirror for baseline initialization, using multiple paths
Converting a single-path SnapMirror relationship to use multiple paths
Enabling SnapMirror by entering license codes
Turning SnapMirror on
Initialization of a SnapMirror destination
Quotas for SnapMirror destination qtrees
Guidelines for creating a qtree SnapMirror relationship
Initialization of a SnapMirror destination from tape
Initializing a SnapMirror destination
Space guarantee for a volume SnapMirror destination
Initializing a destination for non-qtree data
How the snapmirror initialize command copies volumes
How the snapmirror initialize command copies qtrees
What happens after SnapMirror makes the initial copy to the destination
How to check the initialization of a volume
Checking the initialization of a qtree
How the snapmirror initialize command matches source and destination volume size
What you can do if initialization fails or is interrupted
Setting a maximum transfer rate for all transfers
Data replication from one destination to another in a series (cascading)
Supported SnapMirror cascade configurations
Supported SnapMirror three-hop cascade configurations
Sample cascade setup
How SnapMirror handles Snapshot copies for cascading destinations
Listing SnapMirror destinations for a volume in a cascading series
Restructuring a cascade
SnapMirror source to tape to destination scenario
Copying source to intermediate tape
Initializing a SnapMirror destination via local tape
Releasing a SnapMirror source-to-tape relationship
Management of SnapMirror
Resynchronization of FlexVol volumes
SnapMirror management commands and configuration files
SnapMirror shutdown commands
SnapMirror advanced function commands and configuration files
Converting asynchronous SnapMirror replication to synchronous
Methods to specify destination storage systems on the source
Specifying destinations using the snapmirror.access option
Specifying destinations using the snapmirror.allow file
Resolving host names to their IP addresses
What the snapmirror.conf file does
Distribution of the snapmirror.conf file
Limit on entries in the snapmirror.conf file for each storage system
Editing the snapmirror.conf file
Syntax for snapmirror.conf file entries
What restarts and retries are
Manual update of a SnapMirror destination
Performing a manual SnapMirror update
Creating extra backup Snapshot copies for SnapMirror qtrees
What happens after SnapMirror makes incremental updates to the destination
Listing SnapMirror Snapshot copies
Naming conventions for Snapshot copies used by SnapMirror
Use of the snap list command to display SnapMirror updates on the destination volume
Checking SnapMirror data transfer status
What SnapMirror status check shows
Information messages in the SnapMirror status check
Changing the maximum transfer rate for a transfer
SnapMirror data transfer logs
Checking SnapMirror data transfer status
Turning SnapMirror logging on
Format of SnapMirror log files
Turning SnapMirror logging off
Aborting a SnapMirror transfer
Stabilizing destinations before a Snapshot copy
What the quiesce command does
Resuming transfers after quiescing a destination
Scheduled updates for volumes or qtrees
Changing scheduled updates for one volume or qtree
Turning off scheduled updates for one volume or qtree
Turning off SnapMirror updates
Resizing a SnapMirror source and destination volume pair
Conversion of a destination to a writable volume or qtree
Quota restrictions
Converting a SnapMirror destination to a writable volume or qtree
After using the snapmirror break command
Releasing partners from a SnapMirror relationship
What the snapmirror resync command does
Resynchronizing a SnapMirror relationship
How the snapmirror resync command helps minimize data loss
Testing database applications: A special use for snapmirror resync
Retrieving data for disaster recovery: A special use for snapmirror resync
Migrating data between volumes by using SnapMirror
What SnapMirror does not do when migrating data
About moving SnapMirror sources
Terms used when moving SnapMirror sources
Moving volume SnapMirror sources
Moving qtree SnapMirror sources
Use of SnapMirror to copy a volume to a tape
Considerations before using SnapMirror copy to tape, as a backup method
Management of SnapMirror operations through Protection Manager
Operation of SnapMirror with other features and products
Comparison between SnapMirror and the vol copy command
Comparison between volume SnapMirror and qtree SnapMirror
Comparison between qtree SnapMirror and SnapVault
Transfer of LUN clones using qtree SnapMirror
Use of SnapMirror with SnapDrive software
Use of SnapMirror with MultiStore software
How FlexClones impact SnapMirror
SnapVault destination to tape backup
Copying from a SnapVault volume to a local tape
Restoring to SnapVault from a local tape
How SnapMirror works with the dump command
Effect of the dump command on the SnapMirror destination update schedule
Protection of SnapVault secondaries using volume SnapMirror
Migrating SnapVault data using volume SnapMirror
Use of SnapMirror with S family storage systems
Troubleshooting of SnapMirror issues
What happens if you change a destination volume name
Accidental deletion of SnapMirror Snapshot copies
Troubleshooting issues related to SnapMirror over Fibre Channel
Data protection using SnapVault
What SnapVault is
Advantages of using SnapVault
What data gets backed up and restored through SnapVault
Types of SnapVault deployment
What basic SnapVault deployment is
Primary to secondary to tape backup variation
Primary to secondary to SnapMirror variation
How SnapVault backup of storage systems works
How SnapVault backup of Open Systems platforms works
Planning SnapVault backups
Planning primary and secondary qtree locations
SnapVault primary and secondary on the same storage system
Planning SnapVault backup schedule and Snapshot copy retention
Estimating the initial backup time
Limit on the number of concurrent SnapVault targets
Enabling SnapVault
Entering license codes
Setting the enable option
Setting the ndmp option
Setting the access option
How to start a SnapVault backup relationship
Guidelines for creating a SnapVault relationship
Backing up qtree data
What non-qtree data is
Backing up non-qtree data
What volume data backup involves
Backing up volume data
Restoring the qtree to the original volume structure
What SnapVault Snapshot copy update schedules are
How to avoid Snapshot schedule conflicts
Scheduling Snapshot copies on the SnapVault primary storage system
Scheduling Snapshot copy backups to the SnapVault secondary storage system
Scheduling Snapshot copies on the secondary system for archiving
Displaying the currently configured Snapshot schedule
Unscheduling SnapVault Snapshot copies
Checking SnapVault transfers
Examples for checking the status
What the status fields mean
Displaying SnapVault Snapshot copies
Displaying SnapVault Snapshot copies on volume
Examples of displaying SnapVault Snapshot copies on volume
Listing Snapshot copies for qtrees
About LUN clones and SnapVault
LUN clones transfer in non-optimized mode
LUN clones transfer in optimized mode using SnapDrive for Windows
How to change SnapVault settings
Changing settings for SnapVault backup relationships
Why you manually update a qtree on the secondary storage system
Manually updating individual secondary storage system qtrees
Examples of how to update the Snapshot copy on the secondary storage system
Why you create a Snapshot copy manually
Creating a Snapshot copy manually
Renaming a SnapVault or Open Systems SnapVault secondary volume
Restoring SnapVault data to the primary storage system
Examples of restoring SnapVault data
Deleting the residual Snapshot copy
How to abort SnapVault transfers
Aborting primary-to-secondary storage transfers
Aborting secondary-to-primary storage transfers
Aborting SnapVault Snapshot copy creation
Ending SnapVault backups for a qtree
Releasing SnapVault relationships
Turning SnapVault off
Compression feature for Open Systems SnapVault
Enabling the compression feature globally for Open Systems SnapVault relationships
Enabling the compression feature for a new Open Systems SnapVault relationship
Enabling the compression feature for an existing Open Systems SnapVault relationship
Disabling the compression feature globally for Open Systems SnapVault relationships
Disabling the compression feature for a new Open Systems SnapVault relationship
Disabling the compression feature for an existing Open Systems SnapVault relationship
Setting the default value for compression feature
Viewing the compression status for Open Systems SnapVault relationships
SnapVault secondary storage system protection
How to use SnapMirror to replicate SnapVault data
Using backup and standby service for SnapVault
Re-creating the SnapVault relationship
Adding back the tertiary storage system SnapMirror backup
Returning storage systems to the original configuration
How to use SnapVault to protect a volume SnapMirror destination
Error when vol lang changes on volumes
About SnapVault for NetBackup
SnapVault for NetBackup benefits
SnapVault for NetBackup terminology
What the NetBackup catalog is
How NetBackup transfers data to the NearStore system
How to back up file system data using NetBackup
How the NearStore secondary system processes the data
How to take archival Snapshot copies
Configuring the default option for new volumes
Limitations of SnapVault for NetBackup
SnapVault for NetBackup usage recommendations
Recommendations for saving space
Recommendations when using multistream backups
Other recommendations when using SnapVault for NetBackup
How to configure SnapVault for NetBackup transfers
Configuring NearStore as a secondary storage system
Management of data transfers
Scheduling backups
Efficient backup schedule
How backups are stored in archival Snapshot copies
How to manage consumption of Snapshot copies
Example 1: One policy for multiple clients, one destination volume
Example 2: Multiple policies for multiple clients, one destination volume
Example 3: Two policies, different schedules, multiple clients, one destination volume
Example 4: Two policies, different schedules, multiple destination FlexVol volumes
How to coordinate schedules to optimize space savings
Concurrent transfer limits
File system naming for SnapVault for NetBackup qtree images
Monitoring qtree status
Checking the status of a data transfer
Viewing space savings
Data restore from the exported file system
Accessing a backed up file system
Restoring data from a backed up file system
Removing SnapVault for NetBackup volumes
Destroying a volume before backups are expired
Reusing a volume without destroying it
SnapVault for NetBackup with active/active configurations
Disaster recovery using volume SnapMirror on NearStore storage systems
Configuring SnapVault for NetBackup with NetApp volume SnapMirror
Actions required in the event of a NearStore storage system failure
Returning to the initial setup after the failed system has recovered
Use cases of the commands used in the failover process
Use Case: Disaster Recovery Failover Scenario
Use Case: Disaster Recovery Resync Scenario
How to access backups on the replica of a SnapVault for NetBackup volume
Troubleshooting for SnapVault for NetBackup
SnapVault for NetBackup error messages
Giveback cancel error
Giveback veto error
Write failure to the protocol log file
Qtree deletion error
Rectifying UTF translation error
Volume language warning
Rectifying volume language warning
Resolving volume language warnings
Platform mismatch error
Known issues associated with the exported file system
What to do if you run out of Snapshot copies
Troubleshooting tools
Deduplication
What deduplication is
Considerations for using deduplication
Deduplication metadata relocated
Deduplication configuration data relocated
Activating the deduplication license
Considerations for using deduplication with other Data ONTAP features
Volume SnapMirror with deduplication
Qtree SnapMirror with deduplication
Deduplication with SnapVault
Qtree SnapMirror or SnapVault source transfers some unchanged blocks after deduplication
Deduplication and tape backups
Ways to run deduplication
Creating a deduplication schedule
Running deduplication on existing data
Running deduplication outside the preset schedule
Deduplication checkpoint feature
Starting a deduplication operation using the sis start command with the checkpoint feature
Management of deduplication
Enabling deduplication operations
Starting deduplication operations
Viewing the deduplication status for a volume
Viewing deduplication space savings
Stopping deduplication operations
Disabling deduplication
Deduplication must be disabled before removing the deduplication license
Enabling sis auto schedule
vFiler unit integration with deduplication
Deduplication commands that are supported on vFiler units
About running deduplication on a vFiler unit using the CLI
About running deduplication on a vFiler unit using rsh or SSH
How to set the maximum deduplication sessions per vFiler unit
Volume copy
What a volume copy is
When to copy volumes
Prerequistes before copying a volume
Verifying the size of each volume
Verifying the relationship between storage systems
Verifying and changing status of source and destination volumes
Enabling remote access
Copying volumes
Number of vol copy operations supported
Copying Snapshot copies with the vol copy start command
Copying one volume to another
Error messages generated by vol copy start commands
Using volume copy to copy LUNs
Checking the status of a volume copy operation
Displaying the current speed for copying a volume
Controlling a volume copy operation speed
Aborting a volume copy operation
SyncMirror management
What SyncMirror is
Advantages of using SyncMirror
What mirrored aggregates and traditional volumes are
Prerequisites for using mirrored volumes
Where mirrored volume plexes get their disks
Enabling the SyncMirror license
Disabling the SyncMirror license for traditional volumes
Disabling the SyncMirror license for mirrored aggregates
Creation of mirrored aggregates and traditional volumes
Viewing plex and disk pools
Methods for creating a mirrored volume
Creating a mirrored aggregate or traditional volume, where Data ONTAP selects the disks
Creating a mirrored aggregate, where the user selects the disks
Creating a mirrored traditional volume, where the user selects the disks
Creating a mirrored aggregate, where the user selects the disks with assistance from Data ONTAP
Creating a mirrored traditional volume, where the user selects the disks with assistance from Data ONTAP
Addition of a plex to an existing unmirrored aggregate or traditional volume
Adding a plex to an aggregate or traditional volume, where Data ONTAP selects the disks
Adding a plex to an aggregate or traditional volume, where the user selects the disks
Adding a plex to an aggregate or traditional volume, where the user selects the disks with assistance from Data ONTAP
Addition of disks to a mirrored aggregate or traditional volume
Rules to follow when adding disks to a mirrored aggregate or traditional volume
Adding disks to a mirrored volume, where Data ONTAP selects the disks
Adding disks to a mirrored aggregate or traditional volume, where the user selects the disks
Adding disks to a mirrored aggregate or traditional volume, where the user selects the disks with assistance from Data ONTAP
The states of a plex
Viewing the status of plexes
Changing the state of a plex
Splitting a mirrored aggregate or traditional volume
Rejoining split aggregates or traditional volumes
Removing a plex from a mirrored aggregate
Removing a plex from a mirrored traditional volume
Comparing plexes of a mirrored aggregate or traditional volume
Stopping plex comparison
Suspending plex comparison
Resuming plex comparison
Viewing the status of a plex comparison
Database protection using NVFAIL
How NVFAIL protects database files
Enabling database file protection
Where to look for database file verification instructions
Adding additional database file protection
Making LUNs accessible to the host after an NVRAM failure
Database protection using SnapValidator
What SnapValidator checks
How SnapValidator checks are set when you upgrade or revert Data ONTAP software
Preparing a database for SnapValidator
Implementing SnapValidator checks
Licensing SnapValidator
Enabling SnapValidator checks on volumes
Enabling SnapValidator checks on LUNs
Identifying the disk offset for Solaris hosts
Identifying the disk offset for other hosts
Defining the disk offset on the storage system
Disabling SnapValidator
Disabling SnapValidator on a volume
Disabling SnapValidator on a LUN
Troubleshooting invalid data error messages
Virus protection for CIFS
How CIFS virus scanning works
File types scanned by default
Setting up and starting virus scanning
Setting up PC clients as virus-scanning clients
Enabling virus scanning on the storage system
Setting up secondary scanning clients
Setting up McAfee scan detection properties for NetApp storage systems
Specifying file types to be scanned
Displaying file types to be scanned
Adding file types to be scanned
Replacing file types to be scanned
Removing file types to be scanned
Resetting file types to be scanned
Excluding file types to be scanned
Displaying file types to exclude from scanning
Creating a list of file types to exclude from scanning
Adding file types to exclude from scanning
Removing file types to exclude from scanning
Resetting the exclude file types list to empty
Using an inclusion list in combination with an exclusion list
Specifying shares for scanning
Turning virus scanning off for any access
Turning scanning on for any access
Turning scanning off for read-only access
Turning scanning on for read-only access
Adding shares with virus scanning turned off
Adding shares with virus scanning turned off for read-only access
Displaying the scanner list
Primary virus scanner not listed
Checking vscan information
Setting and resetting the request timeout for a virus scan
Allowing file access when the scan cannot be performed
Controlling vFiler unit usage of host storage system virus scanners
Checking the status of virus-scanning options
Stopping a virus scanner session
Resetting the scanned files cache
Enabling virus scan messages to CIFS clients
Virus scan server error messages
Glossary