Amazon.com: Western digital RE 3 TB Enterprise Hard Drive: 3.5 Inch, 7200 RPM, SATA III, 64 MB Cache - WD3000FYYZ (Old Model) Bullet - 5 years warranty from seller : Electronics
Western Digital WD201KFGX 3.5 in. Red Pro 20TB 7200 RPM 512MB Cache Internal Hard Drive - Walmart.com