How bad is it to use a hoster's SMB share for user documents?

Question

System administration

There is a terminal server on Hetzner, users gave a 2 TB hard drive and asked to connect it in a ball to work with files. What is the best way to solve the problem, is it normal to buy them a StorageBOX and connect via SMB?
Description of StorageBOX:

10 concurrent connections
Additional users
8 snapshots
8 automatic snapshots
FTP
FTPS
SFTP
SCP
Samba/CIFS
BorgBackup
rsync over SSH
HTTPS
WebDAV

Will 10 connections be enough for 20 people? What do these connections actually mean?
What is the best way to mount a disk, NFS is not here, so use SMB?
Is it normal to send SMB with documents outside the server, even if it's all inside one DC?

Answer 1

Just do not expose naked SMB to the Internet.
If you need to have access from the Internet, then you need to organize a VPN and get access to SMB resources through it.
In general, keep in mind that everything that is not in your office under a closed door and guarded (i.e. on the Internet, cloud, hoster) has direct physical access to unauthorized persons. Therefore, if you place confidential information somewhere, then you need to think about how you will protect it during physical storage: crypto containers, password-protected files, etc.

Answer 2

i would use owncloud