Seagate ST4000NM0025 Enterprise 3.5 Inch SATA Hard Drive

Seagate ST4000NM0025 is an enterprise-class 4 TB 3.5-inch hard disk drive that spins at 7200 RPM and uses a Serial Attached SCSI (SAS) interface, designed for data centers and servers requiring high-capacity, reliable storage. It uses 512-byte native sectors (512n) with a 128 MB cache and a maximum sustained transfer rate of about 215 MB/s, supported by dual SAS ports for flexible enclosure connectivity. The 3.5-inch form factor measures 26.1 mm in height, 101.85 mm in width, and 147 mm in depth, and it weighs roughly 605–655 g depending on exact build. Power is drawn from +12 V and +5 V supplies, with idle power around 6.7 W and active power around 10.5 W. The drive ships with a 5-year limited warranty and is suitable for use in enterprise servers, storage arrays, and data-center storage environments that demand dependable throughput and large capacity per drive.