Hi,    As you mentioned, non-Dell parts may not work or may cause the whole system to not work properly as a side effect. This is due to firmware incompatibility of non-certified parts. I checked the MG08ACA16TE you gave on the thread in the spare parts system that I can access, but I couldn't get any results. Therefore, I cannot guarantee that these disks will work. If there are users in the community, it will be useful for them to share their experiences. If you want to contact a representative, you can also check the link here. [URL]    Hope this will helps!    
From my research the only gotcha to getting four MG08ACA16TE drives would be that the fan(s) might kick up at full speed if iDRAC doesn't determine the drive's temperature accurately.Would there be any other gotchas?If it matters, I'm looking at getting a mostly fully loaded T340 with an E-2246G CPU, 64 GB RAM. I would like to use a mirrored 500 GB Samsung 870 EVO and four MG08ACA16TE in a ZFS RaidZ2. The Samsung and Toshiba drives would be purchased outside of Dell. Everything else would be purchased from dell.com when we buy the server. As a side note, how do I get a Dell rep? I've tried in the past, but never heard back. Thanks for your time!
T340 - Would these Toshiba drives work okay?