Seagate IronWolf Pro 4TB Internal Hard Drive, NAS HDD, 3.5 Inch, 7200 rpm, CMR, 128 MB Cache, SATA 6 GB/S, Silver, 3 Years Data Rescue Service, FFP, Model No.: ST4000NEZ01
Seagate Exos 7E10 4TB Internal Hard Drive HDD - 3.5 Inch 512e/4Kn SAS 6GB/s, 7.200 RPM, 256MB Cache and 2M MTBF for Enterprise, Data Centre (ST4000NM024B)