Let us not forget the little considered other cause which usually takes out your tape infrastructure as well: fire.
One outfit I worked decided to stick a brand new APC UPS in the bottom of the rack as it was in their office. It promptly caught fire and burned the entire rack out. The fire protection system did fuck all as well other than scare the shit out of the staff. Scraping molten cat5 cables off with a paint scraper was not fun.
Fortunately it was all covered by the DR procedure. Tip: write one and test it. That's more important than anything.
One outfit I worked decided to stick a brand new APC UPS in the bottom of the rack as it was in their office. It promptly caught fire and burned the entire rack out. The fire protection system did fuck all as well other than scare the shit out of the staff. Scraping molten cat5 cables off with a paint scraper was not fun.
Fortunately it was all covered by the DR procedure. Tip: write one and test it. That's more important than anything.