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