Think that Samsung's 2TB solid-state drives are pretty capacious? They're just the start of something bigger. The Korean tech giant has started manufacturing the first 256-gigabit (32GB) 3D vertical flash memory, doubling its previous capacity record. The new tech should turn multi-terabyte SSDs into practical options for your home PC, and help phone makers cram more storage into tight spaces. You might get more bang for your buck, to boot -- Samsung's manufacturing is 40 percent more productive, so you likely won't pay twice as much for twice the headroom. The company plans to make this 256-gigabit flash through the rest of 2015, so you'll probably see it crop up in a lot of products (from Samsung and otherwise) over the months ahead.