WD Original Purple Surveillance HDD 1TB 2TB 3TB 4TB 6TB 8TB 10TB 12TB SATA 6.0Gb/s 3.5" Hard Drive Camera AHD DVR IP NVR|External Hard Drives| - AliExpress
Price history & Review on WD Purple 2TB Surveillance Internal Hard Drive Disk 3.5" 64M Cache SATA III 6Gb/s 2T 2000GB HDD HD Harddisk for CCTV DVR NVR | AliExpress Seller -
Western Digital WD Purple 2TB 3.5" Surveillance HDD 64MB SATA 6 Gb/s Internal Hard Drive for Video Recorder NVR WD20EJRX|2tb hdd|hard drivehdd 2tb - AliExpress
Western Digital WD20PURX Hard Drive SATA-6GBPS 2TB-7.2K RPM | New Factory Sealed