WD RE 4 TB Enterprise Hard Drive: 3.5 Inch, 7200 RPM, SATA III, 64 MB Cache - WD4000FYYZ
Ideal for enterprise servers and storage, video surveillance, and other write-intensive applications, WD RE 7200 RPM Enterprise SATA hard drives offer up to 4 TB capacity, 64 MB cache, 4th generation vibration tolerance and 5-year limited warranty.