Serious question, sans any snark: In your entire career, how many instances of this happening have you encountered?
I can immediately think of "once"..hence my "Been there, done that" comment. Power surges can come into a computer via 1x avenue, and spread out and touch everything else connected to that computer. Got a few stories of clients located on some ground prone to lightening strikes. I remember doing a large plant farm (greenhouse) located up high on a hilltop. Also a world famous golf course located on an island...up high on a hill, the island has lots of granite under it...been through 2x major repairs there where lightening hit the building and took out most of their network (server, workstations, etc). Large golf course! Both of those places ended up doing large installs of APC NetProtect setups.
I can think of other times where the USB drive was dead for automated scheduled backups, nobody cracked open the backup software in a long time to check logs, success, failures, etc.
I recall back about 20 years ago, a company that called, I went onsite, they "thought" they were doing backups to burnable CDs regularly. Well, something blew up, they happily handed me a stack of CD that they thought had their important data, I went to check them, browse...and had to deliver the bad news. Whoever setup backups on "burning CDs"...well known for not being reliable...heh....hope they changed careers.
Another external USB drive backup that I now remember, a fresh seafood sales company called us out of the blue, someone thought it would a good idea to blow out the dust bunnies of the drives of their server. Hot swap removable drives. They took all the drives out. Blew the dust out. Put them back, but not in the correct order. Server failed to boot up. They called their prior IT guy, who...(and we know of this guy...doesn't know much, pretty much a craigs list pizza tech), anyways he tried to force a reinitialization and/or rebuild of the RAID..which wiped all the RIS files from the drives. Yeah, they went empty. Their backup wasn't working...server dead in the water. I remember telling her that, and watching her collapse to the floor like a wet rag doll and start crying.
Back when tape drives were popular in servers, many places had the grandfather/father/son tape rotation thing going. And other differential methods. I always hated those, as they relied on all other members of the backup vault being 100% perfect! Or someone forgot to change one of the tapes one of the days. I always, had clients doing full backups each and every day.
In other words, eliminate most of the hardware, and eliminate the human factor, and you've removed the highest percentage of "Things that will fail".