HDD makes chirping sound, but only in UnRAID

I bought a 14TB drive on Black Friday. Ran a thorough check on the drive, all was well. Plugged it into my UnRAID server, it runs about 20 seconds, pauses and makes a chirp noise. Repeat over and over. It seems to run, just slowly.

I pulled it out and plugged it into my Windows desktop to run SeaTools and do a complete wipe. All went well, no noise. Plug it back into my server, and the chirping starts again.

I remove it again and plug it into Windows. Download SeaChest and disable the auto-head parking feature, hoping that helps. Windows is quiet. Plug it back into UnRAID, the chirping begins again.

Any ideas?