Veritas NetBackup™ Deduplication Guide

Last Published:
Product(s): NetBackup (8.1.2)
  1. Introducing the NetBackup media server deduplication option
    1.  
      About the NetBackup deduplication options
  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. About MSDP Encryption using KMS service
      1.  
        Upgrading KMS for MSDP
    14. Configuring a storage server for a Media Server Deduplication Pool
      1.  
        MSDP storage path properties
      2.  
        MSDP network interface properties
    15.  
      Configuring a storage server for a PureDisk Deduplication Pool
    16.  
      About disk pools for NetBackup deduplication
    17. Configuring a disk pool for deduplication
      1.  
        Media Server Deduplication Pool properties
    18.  
      Creating the data directories for 96-TB MSDP support
    19.  
      Adding volumes to a 96-TB Media Server Deduplication Pool
    20. Configuring a Media Server Deduplication Pool storage unit
      1.  
        Media Server Deduplication Pool storage unit properties
      2.  
        MSDP storage unit recommendations
    21.  
      Configuring client attributes for MSDP client-side deduplication
    22.  
      Disabling MSDP client-side deduplication for a client
    23.  
      About MSDP compression
    24.  
      About MSDP encryption
    25.  
      MSDP compression and encryption settings matrix
    26.  
      Configuring encryption for MSDP backups
    27.  
      Configuring encryption for MSDP optimized duplication and replication
    28.  
      About the rolling data conversion mechanism for MSDP
    29.  
      Modes of rolling data conversion
    30.  
      MSDP encryption behavior and compatibilities
    31.  
      Configuring optimized synthetic backups for MSDP
    32.  
      About a separate network path for MSDP duplication and replication
    33.  
      Configuring a separate network path for MSDP duplication and replication
    34. 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
    35. 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
    36.  
      About MSDP replication to a different domain
    37. 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.  
        Adding a trusted master server
      4.  
        Removing a trusted master server
      5.  
        Enabling NetBackup clustered master server inter-node authentication
      6.  
        Configuring CA and certificate for secure communication between the source MSDP storage server and the target MSDP storage server
      7. Configuring a target for MSDP replication to a remote domain
        1.  
          Target options for MSDP replication
    38.  
      About configuring MSDP optimized duplication and replication bandwidth
    39.  
      About storage lifecycle policies
    40.  
      About the storage lifecycle policies required for Auto Image Replication
    41. Creating a storage lifecycle policy
      1.  
        Storage Lifecycle Policy dialog box settings
    42.  
      About MSDP backup policy configuration
    43.  
      Creating a backup policy
    44. Resilient Network properties
      1.  
        Resilient connection resource usage
    45.  
      Specifying resilient connections
    46.  
      Adding an MSDP load balancing server
    47.  
      About variable-length deduplication on NetBackup clients
    48.  
      About the MSDP pd.conf configuration file
    49. Editing the MSDP pd.conf file
      1.  
        MSDP pd.conf file parameters
    50.  
      About the MSDP contentrouter.cfg file
    51.  
      About saving the MSDP storage server configuration
    52.  
      Saving the MSDP storage server configuration
    53.  
      Editing an MSDP storage server configuration file
    54.  
      Setting the MSDP storage server configuration
    55.  
      About the MSDP host configuration file
    56.  
      Deleting an MSDP host configuration file
    57.  
      Resetting the MSDP registry
    58. About protecting the MSDP catalog
      1.  
        About the MSDP shadow catalog
      2.  
        About the MSDP catalog backup policy
    59.  
      Changing the MSDP shadow catalog path
    60.  
      Changing the MSDP shadow catalog schedule
    61.  
      Changing the number of MSDP catalog shadow copies
    62. Configuring an MSDP catalog backup
      1.  
        MSDP drcontrol options
    63.  
      Updating an MSDP catalog backup policy
    64.  
      About MSDP FIPS compliance
  6. Configuring deduplication to the cloud with NetBackup CloudCatalyst
    1. Using NetBackup CloudCatalyst to upload deduplicated data to the cloud
      1. Optimized duplication is used to copy data from an MSDP storage server to a CloudCatalyst storage server (preferred use case)
        1.  
          MSDP storage servers fan-in to a single CloudCatalyst storage server
      2.  
        Backups go directly to a CloudCatalyst storage server
    2.  
      CloudCatalyst requirements and limitations
    3.  
      Configuring a Linux media server as a CloudCatalyst storage server
    4. Configuring a CloudCatalyst storage server for deduplication to the cloud
      1.  
        How to configure a NetBackup CloudCatalyst Appliance
      2.  
        How to configure a Linux media server as a CloudCatalyst storage server
      3.  
        Configuring a CloudCatalyst storage server as the target for the deduplications from MSDP storage servers
      4.  
        Configuring a storage lifecycle policy for NetBackup CloudCatalyst
    5.  
      About the CloudCatalyst esfs.json configuration file
    6.  
      About the CloudCatalyst cache
    7.  
      Differences between KMS and MSDP encryption for CloudCatalyst configurations
    8.  
      Controlling data traffic to the cloud when using CloudCatalyst
    9.  
      Configuring source control or target control optimized duplication for CloudCatalyst
    10.  
      Decommissioning CloudCatalyst cloud storage
    11.  
      NetBackup CloudCatalyst workflow processes
    12.  
      Disaster Recovery for CloudCatalyst
  7. 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
  8. 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
  9. 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
  10. Replacing MSDP hosts
    1.  
      Replacing the MSDP storage server host computer
  11. Uninstalling MSDP
    1.  
      About uninstalling MSDP
    2.  
      Deactivating MSDP
  12. Deduplication architecture
    1.  
      MSDP server components
    2.  
      Media server deduplication backup process
    3.  
      MSDP client components
    4.  
      MSDP client - side deduplication backup process
  13. 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
    9. Troubleshooting CloudCatalyst issues
      1. CloudCatalyst logs
        1.  
          Error messages in esfs_storage
        2.  
          Error messages in esfs_filesystem
      2. Problems encountered while using the Cloud Storage Server Configuration Wizard
        1.  
          Unable to select the desired media server
        2.  
          Unable to select the Deduplication option
        3. Storage Server Creation Status errors
          1.  
            Login credentials or certificate failed message
          2.  
            Failure to add credentials
      3. Disk pool problems
        1.  
          Disk pool creation problem due to timeout issue
        2.  
          One disk pool for each CloudCatalyst storage server
      4. Problems during cloud storage server configuration
        1.  
          Media server not available in Media Servers tab to add credentials
        2.  
          Add credentials failed message for media server
      5.  
        Status 191: No images were successfully processed
      6.  
        Media write error (84) if due to a full local cache directory
      7.  
        Trouble restarting ESFS after the CloudCatalyst storage server is down
      8.  
        Restarting the vxesfsd process
      9.  
        Problems restarting vxesfsd
      10. CloudCatalyst troubleshooting tools
        1.  
          esfs_cleanup.sh script
        2.  
          esfs_check consistency checking tool
        3.  
          setlsu_ioctl tool
  14. Appendix A. Migrating to MSDP storage
    1.  
      Migrating from PureDisk to the NetBackup MSDP
    2.  
      Migrating from another storage type to MSDP

About the CloudCatalyst esfs.json configuration file

The NetBackup CloudCatalyst uses the configuration options that are included in the esfs.json file for many operations, including options that determine when data is uploaded to cloud storage or when it is evicted from the local cache. Some of the options are configurable by the NetBackup administrator. The location of the esfs.json file depends on the location of the local cache directory.

As part of the Cloud Storage Server Configuration Wizard, the administrator configures a local cache directory. The local cache directory (local_cache_dir in the following topic) determines the location of other directories which are installed automatically and are critical to CloudCatalyst operations:

  • A mount path (/storage): local_cache_dir/storage

    The Veritas NetBackup Extendable Storage File System process (vxesfsd) runs on the mount path.

  • A cache path (/cache): local_cache_dir/cache/etc/esfs.json

    This is the location of the esfs.json file.

Configuring the options in the esfs.json file

The NetBackup CloudCatalyst configuration options are listed in Table: Configuration items in the esfs.json file.

To change the configuration items in the esfs.json configuration

  1. Change one or more of the configuration items in the esfs.json file. The file is found in the following location:

    local_cache_dir/cache/etc/esfs.json

  2. Save and close the file.
  3. If vxesfsd is running, run the esfs_reconfig command, indicating the mount path, as follows:

    /usr/openv/esfs/bin/esfs_reconfig local_cache_dir/storage

    If esfs.json is changed while vxesfsd is stopped, the changes take effect the next time vxesfsd starts.

  4. Some items require that you restart vxesfsd before the new configuration can take effect.

    These items are indicated in Table: Configuration items in the esfs.json file.

    • Before stopping vxesfsd, make sure that no processes are using vxesfsd, including the current working directory of any user.

      The NetBackup Deduplication Manager (spad) and the NetBackup Deduplication Engine (spoold) use vxesfsd, so they need to be stopped if either is running.

    • Before starting vxesfsd, make sure that no data exists in the mount point. If data exists in the mount point, vxesfsd fails to restart.

    The following topic contains additional information about restarting vxesfsd:

    See Restarting the vxesfsd process.

Table: Configuration items in the esfs.json file

Configuration item

Default setting

Description

vxesfsd restart required?

Log

Path

\/usr\/openv\/netbackup\/logs

This setting indicates the directory where logs for the vxesfsd process are created.

The logs include the following:

  • esfs_database

  • esfs_filesystem

  • esfs_monitor

  • esfs_storage

  • esfs_storagemanager

Yes

\/usr\/openv\/esfs\/logs\/ops

  • esfs-config.*

  • esfs-run.*

Size

10485760

This value (in kilobytes) controls the maximum size that a single log file is allowed to grow. Once the file reaches that approximate size, the log file is closed and another log file is opened.

No

Level

1

This value determines the logging level and what information is included in the logs:

  • 1: Errors only

  • 2: Warnings and errors

  • 3: All log entries

Note:

The Global logging level in the Host Properties has no effect on this setting.

Yes

Monitor

DACDays

30

The Delete After Close Days value determines how long a container file remains in the cache after it is last accessed and then closed.

After the specified number of days, vxesfsd removes the file from the cache directory only if it has been successfully uploaded to the cloud. This commonly occurs shortly after midnight where the CloudCatalyst storage server is located.

Files which have not been successfully uploaded to the cloud are not removed from the cache directory.

No

HighWatermark

80

This value determines how full the cache partition is allowed to grow before vxesfsd begins to evict container files. The value represents the percentage of used space on the cache partition. The oldest files are evicted until the LowWatermark is met.

Files that have not been successfully uploaded to the cloud are not removed from the cache directory by the eviction process.

If the HighWatermark value is set very low, the cache is nearly cleared. That is, nearly all of the eligible files are evicted.

Note:

The file system on which the cache resides must not contain data from any other applications.

No

LowWatermark

70

This value determines at what point vxesfsd stops evicting container files after the HighWatermark triggers eviction. The value represents the percentage of used space on the cache partition.

No

BackupDBTime

12

This value determines how frequently (in hours) the database is backed up.

This value is unrelated to the drcontrol policy, if one exists. Veritas recommends that a drcontrol policy is created and used to protect your cloud storage server. Veritas recommends that this value is not changed.

Note:

This is a special database for the cloud storage server, not the NetBackup or MSDP catalog.

No

StorageManager

IOSize

1048576

This value (in bytes) has been used for internal testing.

Veritas recommends that this value is not changed.

No

UploadThreads

20

This value determines the number of threads available for uploading data to the cloud.

Yes

DownloadThreads

20

This value determines the number of threads available for downloading data from the cloud.

Yes

BackupDBCopies

14

This value determines the maximum number of saved copies of the database that will be created for backup.

Veritas recommends that this value is not changed.

This value is unrelated to the drcontrol policy, if one exists. Veritas recommends that a drcontrol policy is created and used to protect your cloud storage server.

Note:

This is a special database for the cloud storage server, not the NetBackup or MSDP catalog.

No

FileSystem

MaxOpenFile

192114

This value determines the maximum number of files that can be open at one time.

Veritas recommends that this value is not changed.

Yes

ReadOnly

0

This value indicates whether the files currently stored in the cloud can be modified:

  • 0: The files can be modified. (Default.)

  • 1: The files are read only.

This setting is used for disaster recovery and should not be changed under normal usage.

Yes