Can I use Duplicity with S4? Anamika October 20, 2017 11:13 Follow Yes, you can! Duplicity can use Tahoe-LAFS as a file server protocol and you can use S4 for your grid. In this case, you wouldn’t need Gridsync. Find more info here. Related articles How do I restore from S4 using the tahoe-backup command? How many clients can I use with one S4 account? What is S4? Can I delete old files to save space? Is my S4 account unlimited? Comments 0 comments Please sign in to leave a comment.