![Amazon.com: Western Digital 2TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD20PURZ : Electronics Amazon.com: Western Digital 2TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD20PURZ : Electronics](https://m.media-amazon.com/images/I/81s95TPLznL._AC_UF350,350_QL80_.jpg)
Amazon.com: Western Digital 2TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD20PURZ : Electronics
![Amazon.com: Western Digital 2TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD22PURZ : Electronics Amazon.com: Western Digital 2TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD22PURZ : Electronics](https://m.media-amazon.com/images/I/71m5oiceJ5L.jpg)
Amazon.com: Western Digital 2TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD22PURZ : Electronics
![Amazon.com: WD Purple 8TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 128MB Cache 3.5 Inch - WD80PURZ : Electronics Amazon.com: WD Purple 8TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 128MB Cache 3.5 Inch - WD80PURZ : Electronics](https://m.media-amazon.com/images/I/41sPAkGUv5L.jpg)
Amazon.com: WD Purple 8TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 128MB Cache 3.5 Inch - WD80PURZ : Electronics
![Amazon.com: WD Purple NV 4TB Surveillance Hard Disk Drive - Intellipower SATA 6 Gb/s 64MB Cache 3.5 Inch - WD4NPURX : Electronics Amazon.com: WD Purple NV 4TB Surveillance Hard Disk Drive - Intellipower SATA 6 Gb/s 64MB Cache 3.5 Inch - WD4NPURX : Electronics](https://m.media-amazon.com/images/I/81rvvyp+35L._AC_UF894,1000_QL80_.jpg)
Amazon.com: WD Purple NV 4TB Surveillance Hard Disk Drive - Intellipower SATA 6 Gb/s 64MB Cache 3.5 Inch - WD4NPURX : Electronics
![Amazon.com: WD Purple 10TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 256MB Cache 3.5 - WD100PURZ : Electronics Amazon.com: WD Purple 10TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 256MB Cache 3.5 - WD100PURZ : Electronics](https://m.media-amazon.com/images/I/51Ahjs6nlXL.jpg)
Amazon.com: WD Purple 10TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 256MB Cache 3.5 - WD100PURZ : Electronics
![Amazon.com: Western Digital 8TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD82PURZ : Electronics Amazon.com: Western Digital 8TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD82PURZ : Electronics](https://m.media-amazon.com/images/I/81xH5VNSM5L._AC_UF350,350_QL80_.jpg)
Amazon.com: Western Digital 8TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD82PURZ : Electronics
![Amazon.com: Western Digital 10TB WD Purple Surveillance Internal Hard Drive - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD101PURZ (Old Version) : Electronics Amazon.com: Western Digital 10TB WD Purple Surveillance Internal Hard Drive - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD101PURZ (Old Version) : Electronics](https://m.media-amazon.com/images/I/71CdU9t6VGL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Western Digital 10TB WD Purple Surveillance Internal Hard Drive - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD101PURZ (Old Version) : Electronics
![Amazon.com: WD Purple 4TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD40PURZ (Renewed) : Electronics Amazon.com: WD Purple 4TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD40PURZ (Renewed) : Electronics](https://m.media-amazon.com/images/I/61VXaXCDZ+L._AC_UF350,350_QL80_.jpg)
Amazon.com: WD Purple 4TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD40PURZ (Renewed) : Electronics
![Amazon.com: Western Digital 1TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD10PURZ : Electronics Amazon.com: Western Digital 1TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD10PURZ : Electronics](https://m.media-amazon.com/images/I/81SYy5284RL._AC_UF350,350_QL80_.jpg)
Amazon.com: Western Digital 1TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD10PURZ : Electronics
![Amazon.com: Western Digital 6TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD63PURZ : Electronics Amazon.com: Western Digital 6TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD63PURZ : Electronics](https://m.media-amazon.com/images/I/51SBVmNX7EL.jpg)
Amazon.com: Western Digital 6TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD63PURZ : Electronics
![Amazon.com: Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD40PURZ : Electronics Amazon.com: Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD40PURZ : Electronics](https://m.media-amazon.com/images/I/81NqSo2RcoL._AC_UF350,350_QL80_.jpg)
Amazon.com: Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD40PURZ : Electronics
![Amazon.com: Western Digital 4TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 128 MB Cache, 3.5" -WD40EFZX : Electronics Amazon.com: Western Digital 4TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 128 MB Cache, 3.5" -WD40EFZX : Electronics](https://m.media-amazon.com/images/I/71t6NA6XmNL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Western Digital 4TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 128 MB Cache, 3.5" -WD40EFZX : Electronics
![Amazon.com: Western Digital 12TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD121PURZ : Electronics Amazon.com: Western Digital 12TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD121PURZ : Electronics](https://m.media-amazon.com/images/I/8129qkSiKTL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Western Digital 12TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD121PURZ : Electronics
![Amazon.com: Western Digital 8TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 128 MB Cache, 3.5" & 10TB WD Purple Pro Surveillance Internal Hard Drive HDD - SATA 6 Amazon.com: Western Digital 8TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 128 MB Cache, 3.5" & 10TB WD Purple Pro Surveillance Internal Hard Drive HDD - SATA 6](https://m.media-amazon.com/images/I/41mWHeyCUBL.jpg)
Amazon.com: Western Digital 8TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 128 MB Cache, 3.5" & 10TB WD Purple Pro Surveillance Internal Hard Drive HDD - SATA 6
![Amazon.com: Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD42PURZ : Electronics Amazon.com: Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD42PURZ : Electronics](https://m.media-amazon.com/images/I/71KGby9PZkL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD42PURZ : Electronics
![Amazon.com: WD Purple 6TB Surveillance 3.5 Inch Internal Hard Drive - Allframe 4K - 180TB/yr, 64MB Cache, 5640 RPM Class : Electronics Amazon.com: WD Purple 6TB Surveillance 3.5 Inch Internal Hard Drive - Allframe 4K - 180TB/yr, 64MB Cache, 5640 RPM Class : Electronics](https://m.media-amazon.com/images/I/71Nko+lhYbL._AC_UF894,1000_QL80_.jpg)
Amazon.com: WD Purple 6TB Surveillance 3.5 Inch Internal Hard Drive - Allframe 4K - 180TB/yr, 64MB Cache, 5640 RPM Class : Electronics
![Amazon.com: WD Purple 8TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 128MB Cache 3.5 Inch - WD80PUZX [Old Version] : Electronics Amazon.com: WD Purple 8TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 128MB Cache 3.5 Inch - WD80PUZX [Old Version] : Electronics](https://m.media-amazon.com/images/I/51Iz98tyC+L.jpg)
Amazon.com: WD Purple 8TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 128MB Cache 3.5 Inch - WD80PUZX [Old Version] : Electronics
![Amazon.com: Western Digital 1TB WD Blue Mobile Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, 128 MB Cache, 2.5" - WD10SPZX : Electronics Amazon.com: Western Digital 1TB WD Blue Mobile Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, 128 MB Cache, 2.5" - WD10SPZX : Electronics](https://m.media-amazon.com/images/I/41mCMep+RTS.jpg)
Amazon.com: Western Digital 1TB WD Blue Mobile Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, 128 MB Cache, 2.5" - WD10SPZX : Electronics
![Amazon.com: Western Digital Purple 4TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - Western Digital40PURZ [Old Version] : Electronics Amazon.com: Western Digital Purple 4TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - Western Digital40PURZ [Old Version] : Electronics](https://m.media-amazon.com/images/I/41q5pGRLyML._AC_UF894,1000_QL80_.jpg)
Amazon.com: Western Digital Purple 4TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - Western Digital40PURZ [Old Version] : Electronics
![Amazon.com: WD Purple 2TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD20PURX [Old Version] : Electronics Amazon.com: WD Purple 2TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD20PURX [Old Version] : Electronics](https://m.media-amazon.com/images/I/61dEavKyBgL.jpg)