Get reliable storage for your video surveillance needs, with the WD Purple 8TB 3.5” 5, 040rpm SATA desktop internal hard drive. While most hard drives are built to run for short intervals, WD Purple hard drives are built to provide storage for 24/7 HD surveillance. With a workload rating of up to 180TB/year, this hard drive can perform at top levels when you most need it. | WD Purple 8TB 3.5" 5040RPM SATA Desktop Internal Hard Drive (WD85PURZ) - Purple