Yeah on premises drives are where it’s at for anything data intensive. I don’t regularly handle the volumes of data you do, but have on occasion and based on past experience I wouldn’t use cloud storage for anything remotely heavy duty, regardless of the desktop platforms and cloud services involved. Too much room for things to go awry when I can’t physically plug the storage in.

I’ll use cloud storage for off-premises backup in addition to local backups, but that’s about it.