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  1. Home
  2. NetBackup™ Deduplication Guide
  3. Using the NetBackup Deduplication Shell
  4. Managing NetBackup services from the deduplication shell
  5. Managing the cyclic redundancy checking (CRC) service
NetBackup™ Deduplication Guide

Managing the cyclic redundancy checking (CRC) service

The cyclic redundancy checking (CRC) service is a data integrity check. Use the following procedures to manage the CRC service from the deduplication shell.

To view the status of the CRC service

  1. Open an SSH session to the server.
  2. Run one of the following commands:
    • To view the general status of the CRC service:

      dedupe CRC state

    • To view the status of the fix mode on the CRC service:

      dedupe CRC fixmode-state

To enable the CRC service or enable a different CRC mode

  1. Open an SSH session to the server.
  2. Run one of the following commands:
    • To enable the CRC service:

      dedupe CRC enable

    • To enable fast checking, which begins the check from container 64 and does not sleep between checking containers:

      dedupe CRC fast

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

    • To enable fix mode, which runs the check and attempts to fix any inconsistent metadata:

      dedupe CRC enable-fixmode

To disable the CRC service or fix mode

  1. Open an SSH session to the server.
  2. Run one of the following commands:
    • To disable the CRC service:

      dedupe CRC disable

    • To disable fix mode:

      dedupe CRC disable-fixmode

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