Basically, this options makes the data on your phone read only and the data sync from your computer or Synology DSM.I highly advise to perform “download only” option.By default, data will sync via WiFi connection only. Note: Some shares may contain a substantial amount of data. Defer to your IT guy or whoever set the Synology Diskstation on what share folders to sync.Shares are enabled for Cloudstation sync access via Cloudstation Server.ProTip! Use Keepass for storing all related information regarding your Synology user name credentials, server name, and setup notes.
UPDATE CLOUD STATION CLIENT SYNOLOGY SOFTWARE
Synology makes a suite of software and hardware products for those who want more control out of storage. Dropbox, Box, Google Drive, Microsoft OneDrive are personal cloud storage products that have a common thread where they are hosted by a major tech company, costly in that these companies shake you down every time reach their free storage threshold, and you are more likely to be pushed in a direction of using products that meant for their ecosystem only. Everyone likes the concept of sharing files and folders from their computer and phone on the go.