Western Digital offers 16TB drives across various lines (Red Pro, Gold, Ultrastar, My Book) for NAS, enterprise, and desktop use, featuring large capacity with technologies like HelioSeal (for high density), EAMR (Energy-Assisted Magnetic Recording), and vibration protection, using SATA interfaces, and designed for demanding 24/7 workloads, offering robust data storage and performance for both business and personal needs.