Seagate SATA 1 TB Desktop, Surveillance Systems, Servers, All in One PC's, Network Attached Storage Silver SATA Internal Hard Disk Drive (HDD) (Video 3.5)  (Interface: SATA, Form Factor: 3.5 inch)

Average Seek Time - 9.5 ms (Write) Average Seek Time - 9.5 ms (Write) 7200 RPM spin speed 64 MB Cache Memory 300000 Load / Unload Cycles 3.5 inch Form Factor SATA 6.0 Gbps Interface 1 TB HDD The Seagate ST1000VX001 SV35 SATA hard drive is the industry only surveillance-optimised hard drive platform with 1TB storage capacity and has been tested and tuned for the high write-cycle workloads, making it ideal to use for video surveillance storage systems. The hard drive features Seagate 1TB-per-disc technology and takes your surveillance storage further with lower cost/GB to support HD resolutions, enhanced performance and best-in-class support. The ST1000VX000 hard drive series has been tested and tuned for the high write-cycle workloads typical in video surveillance storage systems. The Seagate ST1000VX000 SV35 Hard Drive holds up to 200,000 digital photos, up to 250,000 songs (MP3), up to 25,000 songs (uncompressed CD quality), up to 75 hours of Digital Video (DV), up to 380 hours of DVD quality video and up to 120 hours of HD video