Toshiba 3.5", 4TB, SAS 6GB, Enterprise Hard Drive, 7200RPM, 64MB Cache

 
This 4TB Enterprise Capacity HDD model comes in  a robust design with 3.5-inch form factor and performance of 7,200 rpm. The next addition to the MG04 Series is engineered for midline and nearline-class seek performance to improve application response times. 
Features of MG04SCAxxEx include 12 Gbit/s SAS interface, Toshiba persistent write cache technology, industry-standard 4K native and 512e Advanced Format sector technologies for optimum performance in the latest generation of servers and storage systems.
While 4Kn models (MG04SCAxxEA) offer optimum performance and compatibility with 4K applications, the support for legacy applications and operating environments that require 512B sector lengths is provided by 512e models (MG04SCAxxEE).