Halley / Off-Site Disaster Recovery on a Shoestring

Created Mon, 02 Jun 2025 16:41:00 +0000 Modified Sun, 31 Aug 2025 22:17:24 +0000
307 Words

The question isn’t if you’ll lose data; it’s when.
Drives fail. Houses flood. Ransomware hits.
If all your backups live next to your server, you don’t have backups. You have décor.

Disaster recovery sounds expensive. It doesn’t have to be.

Start With Threat Modelling

Ask: what’s the worst-case scenario?

  • Fire or theft wipes all local gear
  • ISP outage blocks remote access when you need it most
  • Your own mistakes (deleting the wrong directory)

Design for realistic failure, not fantasy hacks.

Keep It Small and Encrypted

Off-site doesn’t mean a second data centre:

  • Identify what’s truly critical: configs, irreplaceable files, credentials
  • Compress and encrypt with keys you control
  • Don’t ship raw, unencrypted data to a third party

A few gigabytes off-site is better than terabytes of local rubble.

Choose Redundant Locations

Pick at least one location away from home:

  • Cheap object storage (Backblaze B2, Wasabi, Hetzner)
  • A VPS with encrypted storage
  • A trusted friend’s server with mutual backup agreements

Distance matters; a flood shouldn’t take out both copies.

Automate and Forget

Manual backups will fail eventually:

  • Script incremental syncs with restic, borg, or rclone
  • Schedule with cron and log results
  • Add simple alerts for failures

Boring automation beats heroic recovery.

Test Restores Like It’s Real

A backup you’ve never restored isn’t a backup:

  • Periodically restore a random file or directory to a test machine
  • Verify checksums and permissions
  • Document recovery steps; future you will panic

Testing builds muscle memory and trust.

Rotate and Prune

Don’t hoard endless copies:

  • Keep sensible retention (e.g. daily for a week, weekly for a month, monthly for a year)
  • Prune automatically to save costs
  • Make sure old snapshots aren’t the only working ones

Disaster recovery is about sanity, not storage bragging rights.

Boring Wins

Off-site backups aren’t sexy.
They’re the unglamorous difference between an inconvenience and ruin.
Build it now, while you’re calm.