Mario Fang

I'm Mario. I run servers, OA and databases for a company in China by day. By night I build the tools I couldn't buy — currently RansomShield, an air-gapped backup for Windows. This is my personal blog: what I learn keeping systems alive, written plainly.

2 posts

Why a backup drive that stays plugged in isn't a backup

Most people I know do have a backup. It's an external drive, it's plugged into the PC, and some software copies files to it every night. On paper, they're covered. Then ransomware runs once, and they

Nov 10, 20263 min read6 views

Nov 10, 2026
Nov 10, 20263 min read1 view
I run servers for a living. I still couldn't buy the backup I wanted, so I built it.
I look after servers for a company. OA systems, databases, NAS boxes, the lot. Backups at work are boring in the good way: proper software, proper rotation, somebody's job to check the logs. Mine. The
3 min read1 view

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Why a backup drive that stays plugged in isn't a backup

I run servers for a living. I still couldn't buy the backup I wanted, so I built it.