This product is either discontinued or we cannot get that from suppliers.
WD WD82PURZ 8TB Purple 3.5" SATA3 Surveillance Hard Drive, Built for 24/7 Use, Form Factor: 3.5", Capacity8TB, Advanced Format, RoHS Compliant, Cameras Supported Up to 64, 256MB, Performance 7,200 RPM, MTBF1,500,000 Hours.
Western Digital 8TB WD Purple 8tb Surveillance 3.5" Hard Drive (WD82PURZ) WD Purple drives have been engineered specifically for the extreme demands of high temperature, 24/7 surveillance systems.