Seagate 4TB 3.5" 64MB Cache 5900RPM Internal Surveillance HDD interface with SATA 6GB/s and 64 Cache (MB). Image Perfect firmware supports 24×7 surveillance-optimized workloads tuned to record about 90% of the time and play back video footage the remaining 10%, and supports more cameras recording at higher resolutions than traditional drives. Lower power consumption means a reduction in heat emissions, which improves reliability in surveillance solutions. Tarnish-resistant components help protect drive from environmental elements, increasing field reliability. Best-Fit Applications are Network Video Recorders (NVR), Embedded Surveillance DVRs (SDVR), Hybrid Surveillance DVRs, and Surveillance DVRs. Workload rating of 180TB/year allows Sky Hawk to perform reliably in write-intensive surveillance system. It implies 3x the workload rating of a desktop-class drive. ATA streaming support sustains recordings from up to 64 HD cameras for smooth, uninterrupted footage. NVR-ready design allows drives to maintain performance in RAID and multi-drive systems, giving customers the flexibility to grow with the booming NVR market and scale their systems when more storage is needed.