In this episode of Linux Server Admin with Fexingo, Lucas and Luna dive into full-disk encryption for Linux servers using LUKS (Linux Unified Key Setup). They explain why disk encryption matters for data-at-rest protection, walk through a practical example of encrypting a secondary drive on Ubuntu Server 22.04 LTS, and discuss key management options including passphrases, keyfiles, and TPM-based unlocks. They also cover performance considerations, backup strategies for LUKS headers, and how to integrate encrypted volumes into automated server deployments. Whether you're securing cloud instances or on-premises hardware, this episode gives you a concrete workflow to protect sensitive data. Lucas and Luna keep it grounded with real commands and specific file paths, avoiding vague security advice.