What makes you so confident? SSD tech is experiencing scaling challenges¹. IIRC DNA’s supposed to be incredibly dense and last long, but too expensive for much more than wedding photos². Do you have a more promising emerging tech in mind?

1: https://news.ycombinator.com/item?id=23393293

2: I think I heard this use case predicted on some NPR thing I can't find, but this one https://www.npr.org/2013/01/24/170082404/shall-i-encode-thee... says “Agilent waived the cost of DNA synthesis for this project, but the researchers estimate it would normally cost about $12,400 per megabyte.

"It's an unthinkably large amount of money ... at the moment," Goldman says.”

>$12,400 per megabyte

I believe the first hard drive cost about $100K/MB in today's money.

The Sandisk microSD card SDSQXCZ-1T00 rated at 1TB for MSRP of $400 is listed at sdcard.org as physical dimensions of 11 x 15 x 1.0 mm, Approx 0.5g. That is 165 mm^2. If a medium ice cube is 25 x 25 x 32 mm for a volume of 20,000 mm^2 - then today an 'ice cube' could hold 20,000 / 165 = 121 TB with normal off the shelf accessible technology for $48K USD.

Given that ~1 hour of video is uploaded to youtube per second and assuming 5mbit/s for the video data, then you can store under a days worth of youtube videos on that current-day ice cube (it will be full in about ~15 hours worth of uploads (if I didn't miscalculate)).

Don't forget that Google stores probably at least 3 copies of each for redundancy and multiple sizes.

Wouldn't want your only ice cube to melt

But also under aggressive and exotic compression.