Earlier quoted context omitted.
That seems a bit too much storage, considering that Seagate only shipped around ~ 250 Exabytes worth of HDD in 2015[1]. Being extremely generous for world supply of Hard drive, we might have had only 1000 Exabytes of storage shipped in a year. Assuming 2 Petabyte per user, mere 500,000 user will consume entire storage produced every year. May be they do, but 2 PB/user seems improbable. That's also $14k per person of…
Lets not assume that Google buys storage from Seagate. Google makes its own hardware for many things (networking, TensorFlow custom ASIC). Also I don't think that have that many number of customers.
Google does not manufacture hard drives, they do buy them from the typical storage companies.