The Stanford HPC team reported last year having sent more than 2PB to Google drive using Lustre/HSM. This was using the public API and the fact that gdrive is free for *.edu sites.

See https://www.eofs.eu/_media/events/lad16/07_thiell_cheap_n_de... (slides) and https://www.youtube.com/watch?v=WbE0nl5V8WE