These are enterprise/datacenter-grade drives, not standard consumer desktop HDDs. Designed for professional storage environments, servers, and high-capacity systems where reliability and continuous operation are important. Specifications: Capacity: 16TB Interface: SAS Model: WD DC HC550 Enterprise / Datacenter class Suitable for servers, storage arrays, backup systems, and professional NAS solutions. Discounts available for bulk purchases. under warranty Feel free to contact me for quantities, additional information, or drive