LOG-001 ·
The Redundancy Ledger: What Resilience Actually Costs Per Month
Everyone says redundancy is expensive. I added it up. It costs less than my streaming subscriptions did.
- Words
- 662
- Est. read
- 2.9 min
- Confidence
- 0.91
- Topics
- economics, resilience, measurement
The standard objection to building a resilient household is cost. Redundancy means paying twice for things that mostly work fine the first time. This is true, and it is also the kind of claim people make without ever writing down a number. So I wrote down all of mine.
Below is my complete redundancy ledger: every recurring dollar I spend on backup systems, second providers, and self-hosted replacements, amortized to a monthly figure. One-time hardware is depreciated over 60 months, which is conservative. My NAS will outlive that estimate or I will hear about it from me.
The ledger
| Line item | Monthly cost | What it backs up |
|---|---|---|
| 5G failover router (second carrier) | $22.00 | Primary internet |
| Email hosting on my own domain | $4.50 | Identity and account recovery |
| Domain renewals (3 domains) | $3.25 | Portable addresses |
| NAS hardware, depreciated | $8.30 | Photos, documents, mail archive |
| Offsite backup drive rotation | $1.90 | The NAS itself |
| VPS for self-hosted services | $6.00 | Passwords, notes sync, RSS |
| Solar battery, depreciated | $19.20 | Grid electricity (partial) |
| Second bank account (fee tier) | $0.00 | Money movement |
| Cold storage hardware, depreciated | $1.50 | Self-custodied assets |
| Total | $66.65 |
Sixty-six dollars and sixty-five cents per month. For calibration, the average American household spends about $61/month on streaming services alone, and I used to be above that average before the audit I will publish later this month.
What the number buys
The correct way to evaluate $66.65 is not against zero. It is against expected loss. Last year my primary internet connection failed 4 times for a combined 39 hours. I work from home. At my billable rate, even a fraction of those hours recovered pays for the failover router for the year. The failover has cut my effective downtime to the cutover window: 40 seconds per incident, measured.
The email line is harder to price because the failure it prevents is rare and catastrophic rather than frequent and annoying. Account lockouts happen to someone else until they happen to you. I value not being that person at considerably more than $4.50.
Some lines are honestly closer to insurance against tail risk than daily utility. The cold storage hardware does nothing 364 days a year. So does a fire extinguisher.
What I cut to pay for it
This ledger did not increase my total spending. It reallocated it. In the same period I cancelled $71/month of subscriptions: two streaming services I watched a combined 3.1 hours per month (I logged it, of course), a cloud storage tier the NAS replaced, and a software subscription with a one-time-purchase competitor. Net change to the household budget: negative $4.35/month.
I want to be careful with that framing, because it flatters the thesis. The honest version: resilience cost me about $67/month and I happened to find offsetting cuts. A household that has already trimmed its subscriptions would see a real increase. But the point survives the caveat. The price of not depending on any single provider is a rounding error on a middle-class budget. People assume sovereignty is a luxury good. It is priced like a gym membership.
The line items that did not make the cut
Honesty requires listing what I evaluated and rejected. A whole-home generator: $340/month amortized with fuel and maintenance, against 11 hours of grid outage last year. Rejected, the battery covers the realistic case. A second car: not even close. Satellite internet as a third connection: $120/month to back up a backup. Redundancy has diminishing returns, and a man who cannot say no to the third layer has stopped measuring and started collecting.
My rule, stated as a number: each redundancy layer must cost less than 10% of a realistic estimate of the loss it prevents, annualized. Every line in the table clears that bar. The rejected items do not.
Sixty-six dollars. Write down your own ledger before you tell me resilience is expensive. I put 0.91 on the claim that yours comes in under $100/month for everything that actually matters, and I would be happy to be checked.