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  1. Home
  2. Veritas NetBackup™ Deduplication Guide
  3. Managing deduplication
  4. Configuring MSDP data integrity checking behavior
Veritas NetBackup™ Deduplication Guide

Configuring MSDP data integrity checking behavior

NetBackup performs several data integrity checks. You can configure the behavior of the integrity checks.

Two methods exist to configure MSDP data integrity checking behavior, as follows:

  • Run a command.

    See “To configure data integrity checking behavior by using a command”.

  • Edit configuration file parameters.

    See “To configure data integrity checking behavior by editing the configuration files”.

Warning:

Veritas recommends that you do not disable the data integrity checking. If you do so, NetBackup cannot find and repair or report data corruption.

To configure data integrity checking behavior by using a command

  • To configure behavior, specify a value for each of the data integrity checks, as follows:

    • Data consistency checking. Use the following commands to configure behavior:

      Enable

      UNIX: /usr/openv/pdde/pdcr/bin/pddecfg - a enabledataintegritycheck

      Windows: install_path\Veritas\pdde\pddecfg - a enabledataintegritycheck

      Disable

      UNIX: /usr/openv/pdde/pdcr/bin/pddecfg - a disabledataintegritycheck

      Windows: install_path\Veritas\pdde\pddecfg - a disabledataintegritycheck

      Get the status

      UNIX: /usr/openv/pdde/pdcr/bin/pddecfg - a getdataintegritycheck

      Windows: install_path\Veritas\pdde\pddecfg - a getdataintegritycheck

    • Cyclic redundancy checking. Use the following commands to configure behavior:

      Enable

      CRC does not run if queue processing is active or during disk read or write operations.

      UNIX: /usr/openv/pdde/pdcr/bin/crcontrol --crccheckon

      Windows: install_path\Veritas\pdde\Crcontrol.exe --crccheckon

      Disable

      UNIX: /usr/openv/pdde/pdcr/bin/crcontrol --crccheckoff

      Windows: install_path\Veritas\pdde\Crcontrol.exe --crccheckoff

      Enable fast checking

      Fast check CRC mode begins the check from container 64 and does not sleep between checking containers.

      When the fast CRC ends, CRC behavior reverts to the behavior before fast checking was invoked.

      UNIX: /usr/openv/pdde/pdcr/bin/crcontrol --crccheckrestart

      Windows: install_path\Veritas\pdde\Crcontrol.exe --crccheckrestart

      Get the status

      UNIX: /usr/openv/pdde/pdcr/bin/crcontrol --crccheckstate

      Windows: install_path\Veritas\pdde\Crcontrol.exe --crccheckstate

To configure data integrity checking behavior by editing the configuration files

  1. Use a text editor to open the contentrouter.cfg file or the spa.cfg file, which control the data integrity checking behavior.

    The files reside in the following directories:

    • UNIX: storage_path/etc/puredisk

    • Windows: storage_path\etc\puredisk

  2. To change a parameter, specify a new value.

  3. Save and close the file.
  4. Restart the NetBackup Deduplication Engine and the NetBackup Deduplication Manager.

    You can do this from the Daemons tab in the Activity Monitor.

More Information

About MSDP data integrity checking

MSDP data integrity checking configuration parameters

MSDP data integrity checking configuration parameters

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