You could also consider one or more of the scientific data repositories like Zenodo, FigShare, DataDryad, etc. 5GB is small potatoes for those folks and they have serious data retention policies. As a bonus, they'll also allocate you a citable DOI.
I now have my first two DOIs, one (data) via Dryad and one (code) via Zenodo.
Because, I just learned about it.