Seagate ST18000NM004J Enterprise Hard Disk Drive

Seagate Exos X18 ST18000NM004J is an 18TB enterprise-class 3.5-inch SAS hard disk drive designed for data-center workloads that demand high capacity and sustained reliability. It spins at 7200 RPM and includes a 256MB cache, with a Serial Attached SCSI (SAS) interface rated at 12Gb/s for fast, scalable connections to enterprise servers and storage arrays. This drive supports FastFormat sector formats, including 512e and 4Kn, enabling compatibility with modern operating systems and storage solutions while preserving data integrity. Suitable for dense rack deployments, virtualization hosts, databases, backups, and other high-demand enterprise storage environments, the ST18000NM004J is part of Seagate’s Exos X18 family built for long, continuous operation in data centers.