Hard Disk Drive (HDD)

The Hard Disk Drive (HDD) is an electro-mechanical storage device that serves as a computer primary storage for long-term data. Unlike volatile memory (like RAM), an HDD is non-volatile, meaning it retains all of its stored data even when the power is turned off. It is the most common and cost-effective solution for storing large volumes of data, including the operating system, applications, documents, photos, and videos.