Using SmartDisk 2.0.1 Build 9, the SmartDisk instance is running out of space regularly and backups have to be manually deleted from vRanger to ensure further backups go through.
The Stage area shows multiple backups that were never deduplicated.
Some as old as 2014 and 2015, when the instance should only host backups from 2016.
Examining the Disk Index the segment index files for such old backups show:
e.g:
Deduplicate = false
Keep In Staging = TRUE