DSS V6 and DSS V7 does not have built in support for a recycle bin similar to the way other operating systems do.
We do have small updates that can be offered to Premum support customers to add this functionality.
Please inquire to our support team to request this for your system.
Alternatively, DSS V6 and DSS V7 can use file level data replication to other systems.
The default behavior of the data replication is NOT delete files if they were deleted on your live volume.
From our long time experience this is probably the best quick method to protect your data.
We have recorded webinar showing how to use data replication: