Yes it is. There is S-Drive functionality inside Salesforce app. When S-Drive users login to their Salesforce app on their phone, they can display the S-Drive folders files by clicking menu item “S-Drive Mobile”. Also, they can configure the Salesforce to display S-Drive attachments files on their standart and custom Salesforce objects. So, S-Driver users can browse through their files. They can open, delete, email and copy url seamlessly.