Building an Offsite Backup NAS
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You've likely heard of the 3-2-1 rule for backups. If not, it's really simple:
- You want 3 copies of your data,
- of these copies, 2 on different mediums (e.g., HDD/tape),
- and finally there should be 1 offsite copy.
When forming your backup plan, you should consider each of these requirements, and formulate a plan for how you'll fulfill them. You also want to consider the type of data you'll be storing, how frequently it'll be accessed, and whether the data is truly irreplaceable, or something that can be re-downloaded or imported from another medium.
In this article, I'll be explaining my 3-2-1 backup solution, including the architecture, costs, and overall performance.