Doubtful. This article describes only 2EB of storage, while Google was estimated to have 15EB of storage two years ago.

Another comparison with Google would be regarding the erasure coding technique described in this blog post. Google offhandedly mentioned using it in a 2010 presentation. Is this really Facebook's first deployment of erasure coding?

No. We published an article of doing raid in hdfs in june 2014: https://code.facebook.com/posts/536638663113101/saving-capac...

Google's a lot bigger than you imagine.