With 6 TB of storage, this is a good hard drive if you need a larger storage unit. The rotation speed 7 200 rpm.
From Amazon
WD Red Pro 6TB NAS 3.5" Internal Hard Drive - 7200 RPM Class, SATA 6 Gb/s, CMR, 256MB Cache, 5 Year Warranty
This product is also available at 6 unverified stores.