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Dell NetWorker 19.9 Administration Guide

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Automatically restarting a checkpoint-enabled backup

If the NetWorker server fails to connect to a client for a backup, the Retries attribute for the backup specifies the number of times that the server tries the connection to the client before the backup is considered a failure.

The Retries attribute applies to a backup regardless of whether the checkpoint restart is enabled for the client. However, a partial save set is created when there is a failure for a checkpoint-enabled client, and the backup is automatically restarted from the checkpoint until the specified number of retries has been exceeded.

The automatic restart must occur within the restart window that you specify for the workflow for the data protection policy.

Example 1

There are six clients in a group, each with three save sets. The Retries attribute for the backup is 1. One save set fails and is checkpoint restarted immediately. The remaining save sets in the group continue to back up. The save set fails a second time. A checkpoint restart for the save set does not occur because the retry attempt would exceed the value for the Retries attribute.

When all the save set backup attempts in the group complete, the backup completion report:

  • Provides a list of the successful save sets.
  • Reports that the failed partial save set is unsuccessful.
  • Reports that the backup failed.

Example 2

There are six clients in a group, each with three save sets. The Retries attribute for the backup is 2. One save set fails and is checkpoint restarted immediately. The remaining save sets continue to back up. The partial save set fails a second time and is checkpoint restarted immediately. This time, the partial save set succeeds.

When all the save set backup attempts in the group are complete, the backup completion report:

  • Provides a list of the successful save sets.
  • Reports that the two partial save sets are successful.
  • Reports that the backup completed successfully.

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