The 3-2-1 Backup Rule, Actually Implemented

Fri, 08 Sep 2023 12:28:00 +0000

Everyone can recite the 3-2-1 rule. Three copies of your data, on two different types of media, with one copy offsite. It gets quoted in every backup thread as if saying the words were the same as doing the work. Then you look at what people have actually built and it is a single NAS with RAID, which is one copy on one medium in one building — a long way from 3-2-1, and exactly the setup that loses everything to a house fire, a power surge, a theft or a rm run with too much confidence. The rule is sound. The gap is that “implement 3-2-1” is treated as a slogan rather than a concrete build, so this article is the build.

3-2-1 - vo.rs

The 3-2-1 Backup Rule, Actually Implemented