I must admit that it's been years since I plugged in my WD Passport Elite after the initial backup. I can't remember how long that first run took (probably left it overnight), but this time it's been running a solid 12 hours and doesn't appear to be close to finished. Frankly, the thing freaks me out (poor user instructions and tools), which is why I let it sit for so long. Now that I know the error of my ways, I'm trying to incorporate it into the schedule again. But how long is this thing going to run???? I wish it had some sort of gauge on it to show completion!