Self Encrypting Drive
A Self Encrypting Drive (SED) is a storage device (e.g., HDD, SSD) with built-in hardware-based encryption that automatically encrypts all data written to it and decrypts data when accessed, using a cryptographic key stored on the drive. It operates transparently to the user and operating system, providing full-disk encryption without significant performance overhead. SEDs are commonly used to protect sensitive data at rest, ensuring compliance with security standards and preventing unauthorized access if the drive is lost or stolen.
Developers should use SEDs when handling sensitive data, such as in applications involving financial records, healthcare information, or intellectual property, to meet regulatory requirements like GDPR, HIPAA, or PCI-DSS. They are particularly valuable in enterprise environments, cloud storage, or portable devices where data breaches are a risk, as they offer robust security with minimal setup and performance impact compared to software-based encryption solutions.