Using Backblaze? You might want to check your restores. The unlimited backup service is quietly skipping synced folders like OneDrive and Dropbox without warning.

Imagine waking up to the click-of-death sound from your hard drive. No sweat, you think, I have Backblaze. You log in to restore, only to find out your entire OneDrive and Dropbox folders are missing. Yep, totally gone.
A post on Hacker News just blew up (scoring over 900 points) exposing a rather sketchy move by Backblaze Personal. The author discovered that the backup client is quietly skipping cloud-synced folders like OneDrive, Dropbox, and potentially others.
The real kicker here? Zero warning. If you use "Files on Demand" (where files are just placeholder links until you open them), it kind of makes sense to skip them. But the plot twist is absolutely wild: even files you've fully downloaded and pinned locally ("Always keep on this device") get ignored by the Backblaze scanner.
This is a massive red flag. Most of us devs dump our side projects, dotfiles, and essential docs into Dropbox, assuming a system-wide backup tool will act as the ultimate safety net. Spoiler alert: It didn't.
Diving into the discussions, the community is basically split into a few distinct camps:
Schrödinger's Backup is real: The condition of any backup is completely unknown until you actually try to restore it.
This whole drama is a classic reminder of the 3-2-1 backup rule. Don't trust "set it and forget it" software blindly, especially when tech companies are aggressively optimizing their storage costs behind the scenes.
Always test your restores, folks. Grab an external hard drive, set up a redundant system, and verify your data periodically. Otherwise, you'll be the one crying on Reddit when your main rig inevitably fries.
Source: Hacker News: Backblaze has stopped backing up OneDrive and Dropbox folders