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Troubleshoot snapshot policy errors

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This article describes error scenarios you might encounter when managing Azure NetApp Files snapshot policies. It also provides solutions that can help you address the issues.

Error conditions and resolutions

Error condition Resolution
Snapshot policy creation fails with invalid snapshot policy name. An error occurs during snapshot policy creation if your snapshot policy name is invalid. The following guidelines apply for snapshot policy names:
  • The snapshot policy name cannot contain non-ASCII or special characters.
  • The snapshot policy name must begin with a letter or a number and can contain letters, numbers, underscore ('_') and hyphens ('-') only.
  • The snapshot policy name must be between 1 and 64 characters.
Revise the snapshot policy name according to the guidelines.
Snapshot policy creation fails with invalid values. Azure NetApp Files fails to create a snapshot policy if you enter an invalid value for a field such as Number of snapshots to keep or Minute on the hour to take snapshot. The valid values are as follows:
  • The value must be a valid number.
  • The value must be between 0 and 59.
Make sure that a valid value is provided for the fields.
Snapshot policy creation fails with the error Total number of snapshots to keep exceeds 255. Each volume can have a maximum of 255 snapshots. The maximum includes the sum of all hourly, daily, weekly, and monthly snapshots.
Decrease the Snapshots to keep value and try again.
Assigning policy to a volume fails with the error Total snapshot policy is over the max '255'. Each volume can have a maximum of 255 snapshots. When the sum of all on-demand, hourly, daily, weekly, and monthly snapshots exceeds the maximum, an error occurs.
Decrease the snapshots to keep value or delete some on-demand snapshots and try again.

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