Icarus 
My project needs about 20-25GB of filsystem storage, where some large log-files would be created, appended-to, and eventually deleted (after being transferred to a server, or backed up on a USB disk). Was wondering if it'd be a good idea to go with a 32GB SD-card for this purpose, or similar capacity USB storage stick ? With either, and for some reason, more-so with SD-card, I am worried about not-so-uncommon lack of wear-levelling, and fear that with frequent usage, the card may get corrupted and die on me, before the end of a year. For my project, I want to keep it super low-cost, and a USB bus-powered 2.5" hdd may lead to overrun of my target cost. Thoughts, suggestion welcome. cheers, Icarus