All computers crash–mine crashed last week, along with my data. Luckily, we back up once a week. Since our work is stored digitally we’re somewhat compulsive about protecting it. We keep everything on both our computers, an external hard-drive and an off-site hard-drive. In addition to that, once a year we make non-electronic backups on data dvds.
It takes energy to stay on top of this, but we’ve saved more energy than we’ve exerted.