superduper for MacOS makes an image of my hard drive every night to an external portable drive. The thing I really like about this is if my hard drive goes kap

superduper for MacOS makes an image of my hard drive every night to an external portable drive. The thing I really like about this is if my hard drive goes kaput, I can boot up the external drive and be back in business in short order. Otherwise, I spend the whole day getting a replacement hard drive or computer and setting up my dev environment.