The entire Library of Congress according to the earlier calculations would fit into 21 TB. There's already a 100 TB SSD that's the size of a 3.5" HDD.[0] 10000 times the Library of Congress would fit onto 2100 of these drives.
The dimensions for this 3.5" drive are 26.1 x 147 x 101.8 mm.[1] That's a volume of roughly 391 cm^3. 2100 of them take up 821,100 cm^3.
A Fractal Design Define 7 has the dimensions of 547 x 240 x 475 mm. That's a volume of 62,358 cm^3.[2]
You could fit 2100 of those SSDs into the same volume as about 13.2 Fractal Design Define 7 cases. That's roughly the size of a bookshelf. You could fit the books of 10000 Libraries of Congress onto one bookshelf.
Now imagine using tape for this. Edit: I'm actually not sure whether tape has better density.
The dimensions for this 3.5" drive are 26.1 x 147 x 101.8 mm.[1] That's a volume of roughly 391 cm^3. 2100 of them take up 821,100 cm^3.
A Fractal Design Define 7 has the dimensions of 547 x 240 x 475 mm. That's a volume of 62,358 cm^3.[2]
You could fit 2100 of those SSDs into the same volume as about 13.2 Fractal Design Define 7 cases. That's roughly the size of a bookshelf. You could fit the books of 10000 Libraries of Congress onto one bookshelf.
Now imagine using tape for this. Edit: I'm actually not sure whether tape has better density.
[0] https://www.techradar.com/news/at-100tb-the-worlds-biggest-s...
[1] https://www.newegg.com/nimbus-data-dc-100tb/p/2U3-002M-00004
[2] https://www.tomshardware.com/reviews/fractal-design-define-7