Applies To: Hitachi NAS (VSP One File)
Use this option to backup data from the last snapshot created by the file server under a specific rule.
Procedure
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From the CommCell Browser, go to client > NDMP > defaultBackupSet. 
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In the right pane, right-click the subclient, and then click Backup. 
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Click Advanced. 
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On the NAS Options tab, in Use Snapshot Rule, enter a snapshot rule name, and then click OK. 
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Select the backup type and schedule. 
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Click OK.