Curious why you went with a 512GB SD card for the Prepperdisk, instead of a usb drive? I guess it might make the enclosure bigger, but every RPi thing I have built has been undone by SD card corruption (unless I used the overlay filesystem).

Good question. Cost and ease of use were the primary drivers. It’s a read-heavy / write-light which means we came expect more life than some use cases. Alternatively we went with nvme on the 1TB/LLM model due to its heavier write profile. Making a backup of the SD card is wise though as a backup.

These things shouldn't need writable FS though.

And yet there's neither mention of projects over https://www.prepperdisk.com/pages/about-us

Yeah, the only mention I can find of many of the open-source projects they use seems to be in one of the FAQs.

And even with you writing that it was not easy to find because its under an unrelated topic.

Good feedback. Most of our customers are shopping for a turnkey device and we try not to include prominent details that can confuse that use cases. But we are going to elevate the content for folks that would be interested (today).