WD20PURX 2TB Surveillance Class Hard Drive from WD
Amazon.com: Western Digital 2TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD23PURZ : Electronics
WD Purple 2TB HDD - B2B - Blackwire
WD 2TB Purple SATA III 3.5" Internal WD23PURZ-SPC5HY0 B&H Photo
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