Documentation
Concepts, configuration, and how-to guides. Start with whichever topic is closest to your question.
Strategy
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The 3-2-1 backup rule, in the cloud era
The 3-2-1 backup rule still works, but cloud account bans broke the 'offsite' assumption. A 2026 guide to backing up across multiple providers.
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Cloud account banned: how to recover and prevent it next time
What to do in the first 72 hours when Google, OneDrive, or Dropbox suspends your account. When to give up. How to set up a backup that survives the next ban.
Concepts
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Choosing N and K parameters
How to pick the two numbers that determine your storage overhead, redundancy, and how many cloud accounts you need.
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Reed-Solomon erasure coding, explained without math
How a 1960s coding theorem lets you store data in N pieces and recover everything from any K of them. Worked example, real-world uses, tradeoffs.
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