Then i would go for Seagate IronWolf Pro ST20000NE000 256MB 20TB, and save 13%. (non pro stop at 12TB)

IronWolf® Pro drives are engineered to deliver 24×7 performance, reliability, and dependability in multi-bay, multi-user commercial and enterprise RAID storage solutions.

If noise was a concern, they are noticeable quieter. WD Red Pro 22TB Hard Drive, NASCompares