3.5 4TB Sky Hawk Surveillance HDD from Seagate The 4TB Seagate Sky Hawk is a high-quality surveillance HDD that delivers incredible performance thanks to its easy to use 3.5 inch form factor that is just 26.1mm in height the drive runs at 5900 rpm the Sky Hawk's technical highlight is its 6 Gb/s interface which is the latest SATA III standard. This drive in particular has a storage capacity of 4000GB with a 64MB Cache. This drive also has a workload of up to 180TB/year. Versatile Fast & Dependable Optimised for DVRs & NVRs Sky Hawk surveillance drives are tuned for 24x 7 workloads in capacities up to 10TB. Equipped with enhanced Image Perfect firmware Sky Hawk helps to minimise dropped frames & downtime with a workload rating 3x that of a desktop drive & is ready to record up to 90% of the time while supporting up to 64 HD cameras. Innovative Protection The innovative Image Perfect firmware enables smooth clear video streaming for always-on 24/7 surveillance environments — helping to ensure your business can always have a formidable layer of protection. Give yourself the ultimate peace of mind with Sky Hawk surveillance drives & never miss a frame even in harsh environments. Sky Hawks extreme workload rating low power consumption & NVR ready design can improve long-term drive reliability. Reliable Performance Sky Hawk is built to scale with your needs & reliably performs in multi-drive systems. Multi-drive surveillance systems can rely on the Sky Hawks RAID-optimised hardware keeping drives & systems in the field longer..