How Arcserve Backup Purges Data from Cloud Storage

There are several ways to purge cloud sessions:

From the Backup Manager console, Destination tab, set the retention time through Cloud Purge Policy when submitting a migration job. When the purge policy expires, the cloud session is deleted to free up space and keep costs down.
From the Device Manager console, click Browse Cloud Folder from the toolbar, select a folder and right-click to delete.
From the Restore Manager console:
1. Select from the Source tab, the Restore by Session method.
2. Select the cloud sessions you want to delete from the Sessions directory tree.
3. Right-click the sessions and click Delete selected sessions.
  The sessions are removed immediately from the cloud storage.