The drive that went click… click… click
A neighbor knocked on my door holding a very old external USB hard drive. It was making a clacking noise, the kind that makes any tech person wince. I tried several times to recover it. No luck.
I pointed her to a professional recovery service. They quoted $650 and up.
She sagged. She was close to tears. "Those are pictures of my kids when they were young!"
That drive wasn't her backup. It was her only copy.
The accountant who erased his clients' folders
An accountant asked my advice on backup. I sent him a link to sign up for IDrive Business. His assistant installed it and tested it, and then everybody forgot about it, which is exactly how backup is supposed to work.
More than a year later he thanked me. He had erased several clients' accounting folders. IDrive had them. His trusty assistant restored everything quickly and easily. He had even forgotten the backup was there.
One had a single copy. The other had three. That's the whole difference.