Extend the expiry date of Snapshot copies with System Manager - ONTAP 9.7 and earlier
You can use ONTAP System Manager classic (available in ONTAP 9.7 and earlier) to extend the expiry date of the Snapshot copies in a volume.
The SnapLock license must be installed on your system.
You can extend the expiry date only for Snapshot copies in a data protection (DP) volume that is the destination in a SnapLock for SnapVault relationship.
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Click Storage > Volumes.
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From the drop-down menu in the SVM field, select All SVMs.
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Select a volume.
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Click Show More Details to view more information about the volume.
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Click the Snapshot Copies tab.
The list of available Snapshot copies for the selected volume is displayed.
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Select the Snapshot copy that you want to modify, and then click Extend Expiry Date.
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In the Extend Expiry Date dialog box, specify the expiry date.
The values must be in the range of 1 day through 70 years or Infinite.
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Click OK.