Checkpoint restart for restore jobs
Checkpoint restart for restore jobs saves time by letting NetBackup resume a failed restore job. The job resumes automatically from the start of the file that was last checkpointed rather than starting from the beginning of the entire restore job. NetBackup automatically takes checkpoints once every minute during a restore job.
The following host properties affect checkpoint restart for restore jobs.
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This Clean-up host property indicates the number of days that a failed restore job can remain in an Incomplete state. See Clean-up properties. | |
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This Universal Setting host property specifies the number of attempts that a client has to restore after a failure. |
Checkpoint restart for restore jobs has the following limitations:
The restore restarts at the beginning of the last checkpointed file, not within the file.
Only the backups that are created using MS-Windows or Standard policy types are supported.
Third Party Copy and the Media Server Copy images that use Standard policy types are supported. However, they cannot be suspended or resumed if the backup image has changed blocks.
A NetBackup administrator can choose to suspend a checkpointed restore job and resume the job at a later time. For example, while an administrator runs a restore job for several hours, the administrator receives a request for a second restore. The request is of a higher priority and requires the resources in use by the first job. The administrator can suspend the first job, start the second restore job and let it complete. The administrator can then resume the first job from the Activity Monitor and let the job complete.
Consider a situation in which a checkpointed restore that has no end date is suspended and then resumed. If a new backup occurs before the resume is initiated, the files from the new backup are included in the restore. For example, a user request the restore of a directory. The restore begins, but is suspended. The request is resumed the next day after another backup of the directory is performed. The files that are restored are from the latest backup.
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