The worst-case scenario has befallen even the most careful computer user: a coffee mug spills on your laptop or an update wipes all your files and photos. Despite your best effort, accidents happen.

Whether you actually go back and look at photos or listen to music from years past, you may someday be disappointed if those memories disappear forever..

Apple’s Time Capsule base station put a Wi-Fi access point, a network router, and a backup drive that tied into Time Machine all in a single box. That was its downfall, too: if the drive failed or ...