How to Diagnose a Silent Disk Failure on Linux

Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering · Jun 4, 2026 · 8m · transcript

Episode 30 of Linux Server Admin with Fexingo tackles one of the most insidious server problems: a disk that's technically online but corrupting data silently. Lucas and Luna walk through a real case from a mid-size e-commerce company where a failing SATA drive went unnoticed for weeks, causing intermittent database corruption and mysterious application crashes. They explain how to detect the early warning signs using SMART attributes (specifically Reallocated Sector Count and Current Pending Sector), why standard monitoring often misses these, and how to set up a simple proactive alert with…