My computer is a pretty important part of my life. I am totally paperless at home. I wanted an easy way to be able to recover from the inevitable hard-drive crash without having to re-install my programs and restoring my data individually. I also wanted to insure I would not have to wait for needed parts.
I bought the replacement HD, external HD enclosure, and necessary tools used for iMac HD replacement. I placed the tools in my "Disaster Preparedness Kit" and put it away. I installed the replacement HD in the external enclosure. I now clone my HD once a month with free software. When the HD crashes, I'll install the clone, and only need to recover the last month of data. Hopefully, I'll only be down an hour or so, as opposed to days, while waiting for parts and restoring programs and data.
If you want the easiest, quickest way to recover from the dreaded, inevitable, and time consuming HD crash. This plan just might be the ticket.