Storage & Preventing Data Loss

SD Cards Are Not (Really) a Storage Medium

The Raspberry Pi 500 uses an SD card as main storage medium. While modern SD cards offer plenty of space, they are by far not a secure storage medium. A potential failure of the SD card and resulting data loss will be a real concern, especially when your applications writing a lot of data on the card — as audio capture typically does.  

There are several steps you can take, to prevent data loss:

1. Using a normal Raspberry Pi 5 with added SSD storage
2. Syncing the files in the background with another device

While 1. will make your project sadly a lot more expensive, the second option can be done with Open Open-Source tools.