Amazon.com: Seagate IronWolf Pro 4TB NAS Internal Hard Drive HDD – 3.5 Inch SATA 6Gb/s 7200 RPM 128MB Cache for RAID Network Attached Storage, Data Recovery Service – Frustration Free Packaging (ST4000NEZ01) : Electronics
Seagate IronWolf Pro 4TB NAS Hard Drive 7200 RPM 3.5" - Newegg.com