This made me curious about what the SSD cost would be. It looks like you can get a 2TB SSD for $200. So that's $100/TB = $1M for 10PB. Of course prices may be higher for enterprise SSDs and you may need redundancy. Then again, you could probably get a bulk discount at that scale.
I basically never do personal projects any more, and I'm much happier.
At home, I love cross-stitch. I can sit for hours after work just embroidering away.
When I'm at my parents' house, I love helping my dad in his workshop. He himself is an amateur, but he's extremely driven. Previous projects have been furniture for the house, a series of scrabble boards, and lately, jigsaw puzzles. I am now considering getting a jigsaw puzzle setup at home because it's so satisfying to do.
I also love sailing and walking. When I'm walking I'll completely disconnect. I don't even take my phone. I have an old flip phone which I keep switched off, and a GPS tracker with an SOS button that will send a text message if I press it.
And this doesn't even cover how you'd fit 40,000 sticks of RAM together.