Upgrade And Benchmark Your 2012 MacBook Air's SSD
Apple's MacBook Air isn't known for its serviceability. You cannot swap out the system's CPU, its memory, or any of its I/O. But you can switch out its SSD. Granted, the storage interface is proprietary, preventing you from using a standard 2.5" drive or even mSATA. However, OWC does make it possible to take Apple's svelte, but not particularly flexible MBA, and upgrade its capacity.
These guides have been done before, though. In fact, OWC's online instructions are pretty easy to follow. So beyond simply performing the upgrade on one of our in-house MacBook Airs, we wanted to explore the new drive's performance, working around Apple's deliberate disabling of TRIM on third-party devices, and getting the most out of our old SSD through external connectivity. After this, you shouldn't have to worry about seeing "Your startup disk is almost full" for quite a while.