Where do you store important files online?

Question

Data storage

Where do you store important data? What storage do you recommend?
Basic requirements:
§ Excellent rating and data security.
§ SMS notifications when authorization occurs.
§ Infinitely long storage of a file in any format.

Answer 1

"should not be stored on the Internet" - unnecessarily categorical advice. Should not be stored in the open - so more precisely. Leaks from iCloud have shown that all authorizations do not help against software errors.
Solution: Encrypt files before putting them on the network. At least you can pack it with an archiver with a large key, if you don’t want to install a real encryption program. Even if someone steals a file from the network, you still need to be able to decrypt it. And dropbox or Googledrive is a matter of taste and needs. You can use several weakly reliable cloud storages, it is unlikely that they will all stop working at once.

Answer 2

ownCloud own. If you forget about SMS notifications, then MEGA or Wuala. MEGA is more secure.

Answer 3

If the files of the state importance, it is more likely that you will not find better paper.
True Crypto.

Answer 4

bitdust.io

Answer 5

Dropbox with 2FA enabled

Answer 6

On your ownCloud server