What are some alternatives?
When comparing 700 files and Synology DS216+II, you can also consider the following products
Dropbox - Online Sync and File Sharing
ownCloud - ownCloud is an open source project enabling businesses to host their own cloud storage while maintaining regulatory and compliance needs.
FileTransfer.io - Send your files safely up to 6GB for free. No download speed limit. No registration needed.
Box - Box offers secure content management and collaboration for individuals, teams and businesses, enabling secure file sharing and access to your files online.
IPFS - IPFS is the permanent web. A new peer-to-peer hypermedia protocol.
Koofr - Koofr offers safe EU based cloud storage with free storage space for life and options to connect multiple cloud accounts (Dropbox, Google Drive, OneDrive) and your personal storages.