To add a secondary tier

1. In the File Systems tab, select the file system for which you want to add the secondary tier.
2. Select the Storage tab, and select the Add secondary tier button.
3. Specify the tier name size.
4. Click Advanced to specify the layout and other details.
5. Select the storage pool for storing your on-premises data. Click Next.
6. Click Finish.
7. Check the View details panel for the status of the task.