Comment by BizarroLand

You would need 4 and change of these 245tb Kioxias to hold 1 petabyte, and an entire server grade computer to run them.

https://www.tomshardware.com/pc-components/ssds/kioxia-unvei...

Or 250 of these ~$400 4tb flash drives and an insane number of dongles to connect them all:

https://www.slashgear.com/1847725/largest-usb-thumb-drive-hi...