I'm looking into Open-E NAS as a solution for a small business' file sharing needs. I want to see if this is a good choice.

The specifics of the setup: 10-20 users, very low level use, mostly documents, etc.

My major hope for this solution is a very low failure/issue rate with the system itself, as there is no onsite IT.

I have two concerns.

1. Do I have the right system?
2. Backup. How exactly do I ensure that the files can be recovered in a disaster senario? After reading various manuals, I am still not sure...

Thanks!