This product is either discontinued or we cannot get that from suppliers.
Seagate ST4000VN008 4TB IronWolf 3.5" SATA3 NAS Hard Drive, SATA 6Gb/s, 5,900 RPM, 64MB, MTBF 1,000,000 Hours, Max Sustainable Transfer Rate 180MB/s, Multi-User Technology 180TB/Year, Rotational Vibration (RV) Sensor, Dual-Plane Balance, 03 Years Limited Warranty
IronWolf ™ is designed for everything NAS. Get used to tough, ready and scalable 24×7 performance that can handle multi-drive environments with a wide range of capacities.