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Your method has a few downsides, namely:

* No support for files over 1GB (videos can easily go beyond that on modern cameras)

* Poor access times/latency for anything not on the current card (you have to manually swap it)

* You have to use tape

* Depending on the pricing, I'd be curious but my bet is that 1024 actually decent micro SD cards will cost at least 1$ a piece , and the 1TB uSD is only $449.99, so good luck finding that many cheap, and usable uSD cards.

> No support for files over 1GB (videos can easily go beyond that on modern cameras)

You can combine multiple physical drives into a single logical volume, e.g.:

https://askubuntu.com/questions/7002/how-to-set-up-multiple-...

Inside, that's how those things basically work. NAND stacked on NAND. They probably don't use tape, though.

Depending on the tape, you could end up with some very nasty electrostatic discharge.