Western Digital WD40EZRX 4tb hard drive.
Used in home system removed in good working order after size upgrade and then in storage.
Tested in NAS and reported as healthy.
Reformatted in Windows NTFS.
CHKDSK reports no bad sectors.
WD40EZRX
Capacity: 4TB
Speed: 5,400RPM
Interface Types: SATA
Form Factor: 3.5inx1.0in LFF Hard Drive
Electrical Interface: SATA 600 - 6.0Gbps
On-Board Cache: 64MB