Veritas NetBackup™ Deduplication Guide

Last Published:
Product(s): NetBackup & Alta Data Protection (8.0)
  1. Introducing the NetBackup media server deduplication option
    1.  
      About the NetBackup deduplication options
    2.  
      New MSDP feature in NetBackup 8.0
  2. Planning your deployment
    1.  
      Planning your MSDP deployment
    2.  
      NetBackup naming conventions
    3.  
      About MSDP deduplication nodes
    4.  
      About the NetBackup deduplication destinations
    5.  
      About MSDP storage capacity
    6. About MSDP storage and connectivity requirements
      1.  
        Fibre Channel and iSCSI comparison for MSDP
    7. About NetBackup media server deduplication
      1.  
        About MSDP storage servers
      2.  
        About MSDP load balancing servers
      3.  
        About MSDP server requirements
      4.  
        About MSDP unsupported configurations
    8. About NetBackup Client Direct deduplication
      1.  
        About MSDP client deduplication requirements and limitations
    9. About MSDP remote office client deduplication
      1.  
        About MSDP remote client data security
      2.  
        About remote client backup scheduling
    10.  
      About the NetBackup Deduplication Engine credentials
    11.  
      About the network interface for MSDP
    12.  
      About MSDP port usage
    13.  
      About MSDP optimized synthetic backups
    14.  
      About MSDP and SAN Client
    15.  
      About MSDP optimized duplication and replication
    16. About MSDP performance
      1.  
        How file size may affect the MSDP deduplication rate
    17.  
      About MSDP stream handlers
    18. MSDP deployment best practices
      1.  
        Use fully qualified domain names
      2.  
        About scaling MSDP
      3.  
        Send initial full backups to the storage server
      4.  
        Increase the number of MSDP jobs gradually
      5.  
        Introduce MSDP load balancing servers gradually
      6.  
        Implement MSDP client deduplication gradually
      7.  
        Use MSDP compression and encryption
      8.  
        About the optimal number of backup streams for MSDP
      9.  
        About storage unit groups for MSDP
      10.  
        About protecting the MSDP data
      11.  
        Save the MSDP storage server configuration
      12.  
        Plan for disk write caching
  3. Provisioning the storage
    1.  
      About provisioning the storage for MSDP
    2.  
      Do not modify MSDP storage directories and files
    3.  
      About adding additional MSDP storage
    4.  
      About volume management for NetBackup MSDP
  4. Licensing deduplication
    1.  
      About the MSDP license
    2.  
      Licensing NetBackup MSDP
  5. Configuring deduplication
    1.  
      Configuring MSDP server-side deduplication
    2.  
      Configuring MSDP client-side deduplication
    3.  
      About the MSDP Deduplication Multi-Threaded Agent
    4. Configuring the Deduplication Multi-Threaded Agent behavior
      1.  
        MSDP mtstrm.conf file parameters
    5.  
      Configuring deduplication plug-in interaction with the Multi-Threaded Agent
    6.  
      About MSDP fingerprinting
    7.  
      About the MSDP fingerprint cache
    8. Configuring the MSDP fingerprint cache behavior
      1.  
        MSDP fingerprint cache behavior options
    9.  
      About seeding the MSDP fingerprint cache for remote client deduplication
    10.  
      Configuring MSDP fingerprint cache seeding on the client
    11. Configuring MSDP fingerprint cache seeding on the storage server
      1.  
        NetBackup seedutil options
    12.  
      Enabling 96-TB support for MSDP
    13. Configuring a storage server for a Media Server Deduplication Pool
      1.  
        MSDP storage path properties
      2.  
        MSDP network interface properties
    14.  
      Configuring a storage server for a PureDisk Deduplication Pool
    15.  
      About disk pools for NetBackup deduplication
    16. Configuring a disk pool for deduplication
      1.  
        Media Server Deduplication Pool properties
    17.  
      Creating the data directories for 96-TB MSDP support
    18.  
      Adding volumes to a 96-TB Media Server Deduplication Pool
    19. Configuring a Media Server Deduplication Pool storage unit
      1.  
        Media Server Deduplication Pool storage unit properties
      2.  
        MSDP storage unit recommendations
    20.  
      Configuring client attributes for MSDP client-side deduplication
    21.  
      Disabling MSDP client-side deduplication for a client
    22.  
      About MSDP compression
    23.  
      About MSDP encryption
    24.  
      MSDP compression and encryption settings matrix
    25.  
      Configuring encryption for MSDP backups
    26.  
      Configuring encryption for MSDP optimized duplication and replication
    27.  
      MSDP encryption behavior and compatibilities
    28.  
      Configuring optimized synthetic backups for MSDP
    29.  
      About a separate network path for MSDP duplication and replication
    30.  
      Configuring a separate network path for MSDP duplication and replication
    31. About MSDP optimized duplication within the same domain
      1. About the media servers for MSDP optimized duplication within the same domain
        1.  
          About MSDP push duplication within the same domain
        2.  
          About MSDP pull duplication within the same domain
    32. Configuring MSDP optimized duplication within the same NetBackup domain
      1. Configuring NetBackup optimized duplication or replication behavior
        1.  
          Setting NetBackup configuration options by using the command line
    33.  
      About MSDP replication to a different domain
    34. Configuring MSDP replication to a different NetBackup domain
      1. About NetBackup Auto Image Replication
        1.  
          One-to-many Auto Image Replication model
        2.  
          Cascading Auto Image Replication model
        3.  
          About the domain relationship for replication
        4.  
          About the replication topology for Auto Image Replication
        5. Viewing the replication topology for Auto Image Replication
          1.  
            Sample volume properties output for MSDP replication
      2.  
        About trusted master servers for Auto Image Replication
      3.  
        Enabling NetBackup clustered master server inter-node authentication
      4.  
        Adding a trusted master server
      5. Configuring a target for MSDP replication to a remote domain
        1.  
          Target options for MSDP replication
    35.  
      About configuring MSDP optimized duplication and replication bandwidth
    36.  
      About storage lifecycle policies
    37.  
      About the storage lifecycle policies required for Auto Image Replication
    38. Creating a storage lifecycle policy
      1.  
        Storage Lifecycle Policy dialog box settings
    39.  
      About MSDP backup policy configuration
    40.  
      Creating a backup policy
    41. Resilient Network properties
      1.  
        Resilient connection resource usage
    42.  
      Specifying resilient connections
    43.  
      Adding an MSDP load balancing server
    44.  
      About the MSDP pd.conf configuration file
    45. Editing the MSDP pd.conf file
      1.  
        MSDP pd.conf file parameters
    46.  
      About the MSDP contentrouter.cfg file
    47.  
      About saving the MSDP storage server configuration
    48.  
      Saving the MSDP storage server configuration
    49.  
      Editing an MSDP storage server configuration file
    50.  
      Setting the MSDP storage server configuration
    51.  
      About the MSDP host configuration file
    52.  
      Deleting an MSDP host configuration file
    53.  
      Resetting the MSDP registry
    54. About protecting the MSDP catalog
      1.  
        About the MSDP shadow catalog
      2.  
        About the MSDP catalog backup policy
    55.  
      Changing the MSDP shadow catalog path
    56.  
      Changing the MSDP shadow catalog schedule
    57.  
      Changing the number of MSDP catalog shadow copies
    58. Configuring an MSDP catalog backup
      1.  
        MSDP drcontrol options
    59.  
      Updating an MSDP catalog backup policy
  6. Monitoring deduplication activity
    1.  
      Monitoring the MSDP deduplication rate
    2. Viewing MSDP job details
      1.  
        MSDP job details
    3.  
      About MSDP storage capacity and usage reporting
    4.  
      About MSDP container files
    5.  
      Viewing storage usage within MSDP container files
    6.  
      Viewing MSDP disk reports
    7.  
      About monitoring MSDP processes
    8.  
      Reporting on Auto Image Replication jobs
  7. Managing deduplication
    1. Managing MSDP servers
      1.  
        Viewing MSDP storage servers
      2.  
        Determining the MSDP storage server state
      3.  
        Viewing MSDP storage server attributes
      4.  
        Setting MSDP storage server attributes
      5.  
        Changing MSDP storage server properties
      6.  
        Clearing MSDP storage server attributes
      7.  
        About changing the MSDP storage server name or storage path
      8.  
        Changing the MSDP storage server name or storage path
      9.  
        Removing an MSDP load balancing server
      10.  
        Deleting an MSDP storage server
      11.  
        Deleting the MSDP storage server configuration
    2. Managing NetBackup Deduplication Engine credentials
      1.  
        Determining which media servers have deduplication credentials
      2.  
        Adding NetBackup Deduplication Engine credentials
      3.  
        Changing NetBackup Deduplication Engine credentials
      4.  
        Deleting credentials from a load balancing server
    3. Managing Media Server Deduplication Pools
      1.  
        Viewing Media Server Deduplication Pools
      2.  
        Determining the Media Server Deduplication Pool state
      3.  
        Changing Media Server Deduplication Pool state
      4.  
        Viewing Media Server Deduplication Pool attributes
      5.  
        Setting a Media Server Deduplication Pool attribute
      6. Changing a Media Server Deduplication Pool properties
        1.  
          How to resolve volume changes for Auto Image Replication
      7.  
        Clearing a Media Server Deduplication Pool attribute
      8.  
        Determining the MSDP disk volume state
      9.  
        Changing the MSDP disk volume state
      10.  
        Inventorying a NetBackup disk pool
      11.  
        Deleting a Media Server Deduplication Pool
    4.  
      Deleting backup images
    5.  
      About MSDP queue processing
    6.  
      Processing the MSDP transaction queue manually
    7.  
      About MSDP data integrity checking
    8. Configuring MSDP data integrity checking behavior
      1.  
        MSDP data integrity checking configuration parameters
    9.  
      About managing MSDP storage read performance
    10. About MSDP storage rebasing
      1.  
        MSDP server-side rebasing parameters
    11.  
      About the MSDP data removal process
    12.  
      Resizing the MSDP storage partition
    13.  
      How MSDP restores work
    14.  
      Configuring MSDP restores directly to a client
    15.  
      About restoring files at a remote site
    16.  
      About restoring from a backup at a target master domain
    17.  
      Specifying the restore server
  8. Recovering MSDP
    1.  
      About recovering the MSDP catalog
    2.  
      Restoring the MSDP catalog from a shadow copy
    3.  
      Recovering from an MSDP storage server disk failure
    4.  
      Recovering from an MSDP storage server failure
    5.  
      Recovering the MSDP storage server after NetBackup catalog recovery
  9. Replacing MSDP hosts
    1.  
      Replacing the MSDP storage server host computer
  10. Uninstalling MSDP
    1.  
      About uninstalling MSDP
    2.  
      Deactivating MSDP
  11. Deduplication architecture
    1.  
      MSDP server components
    2.  
      Media server deduplication backup process
    3.  
      MSDP client components
    4.  
      MSDP client - side deduplication backup process
  12. Troubleshooting
    1. About unified logging
      1.  
        About using the vxlogview command to view unified logs
      2.  
        Examples of using vxlogview to view unified logs
    2. About legacy logging
      1.  
        Creating NetBackup log file directories for MSDP
    3.  
      NetBackup MSDP log files
    4. Troubleshooting MSDP installation issues
      1.  
        MSDP installation on SUSE Linux fails
    5. Troubleshooting MSDP configuration issues
      1.  
        MSDP storage server configuration fails
      2.  
        MSDP database system error (220)
      3.  
        MSDP server not found error
      4.  
        License information failure during MSDP configuration
      5.  
        The disk pool wizard does not display an MSDP volume
    6. Troubleshooting MSDP operational issues
      1.  
        Verify that the MSDP server has sufficient memory
      2.  
        MSDP backup or duplication job fails
      3.  
        MSDP client deduplication fails
      4.  
        MSDP volume state changes to DOWN when volume is unmounted
      5.  
        MSDP errors, delayed response, hangs
      6.  
        Cannot delete an MSDP disk pool
      7.  
        MSDP media open error (83)
      8.  
        MSDP media write error (84)
      9.  
        MSDP no images successfully processed (191)
      10.  
        MSDP storage full conditions
      11.  
        Troubleshooting MSDP catalog backup
    7.  
      Viewing MSDP disk errors and events
    8.  
      MSDP event codes and messages
  13. Appendix A. Migrating to MSDP storage
    1.  
      Migrating from PureDisk to the NetBackup MSDP
    2.  
      Migrating from another storage type to MSDP
  14. Appendix B. NetBackup appliance deduplication
    1.  
      About NetBackup appliance deduplication

About NetBackup Auto Image Replication

The backups that are generated in one NetBackup domain can be replicated to storage in one or more target NetBackup domains. This process is referred to as Auto Image Replication.

The ability to replicate backups to storage in other NetBackup domains, often across various geographical sites, helps facilitate the following disaster recovery needs:

  • One-to-one model

    A single production datacenter can back up to a disaster recovery site.

  • One-to-many model

    A single production datacenter can back up to multiple disaster recovery sites.

    See One-to-many Auto Image Replication model.

  • Many-to-one model

    Remote offices in multiple domains can back up to a storage device in a single domain.

  • Many-to-many model

    Remote datacenters in multiple domains can back up multiple disaster recovery sites.

NetBackup supports Auto Image Replication from a Media Server Deduplication Pool in one NetBackup domain to a Media Server Deduplication Pool in another domain.

Notes about Auto Image Replication

  • Auto Image Replication is supported between the master server domains that run any of the following versions of NetBackup:

    • NetBackup 7.1.0.4

    • NetBackup 7.5.0.3 and later

    For catalog backup images, NetBackup supports Auto Image Replication only between the same release levels of NetBackup.

    Both master servers must be at NetBackup version 7.6 or later if Targeted A.I.R. is used. Targeted A.I.R. means that Auto Image Replication is configured to replicate a backup to a specific master server in a specific domain.

  • Although Auto Image Replication is a disaster recovery solution, you cannot restore to clients in the primary (or originating) domain from the target master domain.

  • Auto Image Replication does not support synthetic backups or optimized synthetic backups.

  • Auto Image Replication does not support spanning volumes in a disk pool. NetBackup fails backup jobs to the disk pools that span volumes if the backup job is in a storage lifecycle policy that also contains a replication operation.

  • Auto Image Replication does not support replicating from a storage unit group. That is, the source copy cannot be in a storage unit group.

  • The ability to perform Auto Image Replication between different versions of NetBackup does not overrule the basic image compatibility rules. For example, a database backup that was taken in a 7.7 domain can be replicated to a 7.5.0.3 domain, although a 7.5.0.3 server may not be able to successfully restore from this newer image.

    See the following article for information about version compatibility and interoperability:

    http://www.netbackup.com/compatibility

  • Synchronize the clocks of the master servers in the source and the target domains so that the master server in the target domain can import the images as soon as they are ready. The master server in the target domain cannot import an image until the image creation time is reached. Time zone differences are not a factor because the images use Coordinated Universal Time (UTC).

Process Overview

Table: Auto Image Replication process overview is an overview of the process, generally describing the events in the originating and target domains.

NetBackup uses storage lifecycle policies in the source domain and the target domain to manage the Auto Image Replication operations.

See About the storage lifecycle policies required for Auto Image Replication.

Table: Auto Image Replication process overview

Event

Domain in which event occurs

Event description

1

Originating master server (Domain 1)

Clients are backed up according to a backup policy that indicates a storage lifecycle policy as the Policy storage selection. The SLP must include at least one Replication operation to similar storage in the target domain.

2

Target master server (Domain 2)

The storage server in the target domain recognizes that a replication event has occurred. It notifies the NetBackup master server in the target domain.

3

Target master server (Domain 2)

NetBackup imports the image immediately, based on an SLP that contains an import operation. NetBackup can import the image quickly because the metadata is replicated as part of the image. (This import process is not the same as the import process available in the Catalog utility.)

4

Target master server (Domain 2)

After the image is imported into the target domain, NetBackup continues to manage the copies in that domain. Depending on the configuration, the media server in Domain 2 can replicate the images to a media server in Domain 3.