All of mine are made in Thailand.
=== START OF INFORMATION SECTION ===
Device Model: WDC WD80EFZX-68UW8N0
Firmware Version: 83.H0A83
User Capacity: 8,001,563,222,016 bytes [8.00 TB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Rotation Rate: 5400 rpm
if there are specific test you want run...let me know.. I got my 6 today and can use my hot swap bay. If not i'll probably build my zfs pull in about a week.
I can compare them to my old drives. Toshiba 2tb and 3tb