Used - Very Good: WD Purple 2TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch WD20PURX - Newegg.com
NeweggBusiness - WD Purple WD23PURZ 2TB Hard Drive - 3.5" Internal - SATA (SATA/600) - Conventional Magnetic Recording (CMR) Method - Video Surveillance System Device Supported - 3 Year Warranty
WD Hard Drive 2TB Purple Surveillance 3.5 | 2250 EGP