A quick follow up to this and what I found as an alternative to file storage.
I got an Amazon Prime account for $7.99 per month which automatically comes with unlimited photo storage at full resolution, this also include RAW storage.
I was able to connect my external hard drives and back up every photo I have ever take in full res jpeg and raw, it even uploaded and stored them in the same folder structure as my hard drives.
As an added bonus in addition to free 2 day shipping if you order from Amazon you also get Amazon Prime Video.
I needed a backup solution in the event that i ever had a crash of any of my external storage drives and so far I'm super happy with it.
Edit - it also allows you to share in forums, but the file is huge, see below