Read and Write documents in BPM

Taking into account that one need to have authenticated file access - 

- use some FTP or WEB server to store all files and configure required security level for the file access. This will require an additional implementation for the file upload in case the FTP\WEB server and the BPM server are on the different machines.

- Integrate some content management system to store all files and configure required security level for the file access. This will require researching for the suitable CMS as well as implementation for the file upload.

- There is, also, a default Document Attachment coach item. It allows you to attach some document to the coach, and then you can download that document if you know the attachment ID. The link would be like following - http://<HOST>:<PORT>/portal/jsp/downloadDocument.do?docId=<ATTACHMENT_ID> , and it will require user credentials. Attached documents exist only until the instance becomes completed.