> Facebook has built a storage system from 10,000 Blu-ray discs that holds a petabyte of data...<p>One petabyte may have looked impressive in 2014 but is it still (honestly asking, it's not rhetorical)? A friend of mine has got 200 TB in his homelab. That's one fifth of the way there.<p>One petabyte is definitely within reach of an individual nowadays. Granted, it's only HDDs and not Blu-ray discs, but it's still a manageable amount.<p>Now as to why an individual would fill that is another topic: scientific data or options trading data or the various blockchain transactions data (including what's happening on the "L2" chains/sidechains) would quickly fill that, for example. But that is not my point.<p>Is one petabyte a lot? What would be a lot today?<p>For although 10 000 Blu-ray discs is something, 100 000 or one million discs to manage is something else altogether.