Seagate ST3250310SV 250GB 7200 RPM 8MB SATA 3.0Gb/s 3.5" internal hard drive

Designed for 24/7 surveillance recording

The Seagate SV35.3 ST3250310SV is a 250GB 3.5-inch internal hard drive built for continuous video capture. Its firmware and mechanical design target multi-camera systems that write data around the clock. The drive delivers 7200 RPM spindle speed and an 8MB cache to sustain multiple simultaneous streams. It is not suited for users needing larger capacities or faster random-access performance for general computing.

Sustained write duty cycles with thermal headroom

Optimised for high write duty cycles, the drive maintains steady throughput during long recording sessions rather than short bursts. ATA-7 streaming commands tailor read and write profiles to video workloads, reducing frame drops. Low heat generation helps the drive operate reliably at case temperatures up to 15 degrees above typical desktop limits. The 1,000,000-hour MTBF rating reflects this continuous-operation design.

SATA 3.0Gb/s interface practical limits

The SATA 3.0Gb/s link caps maximum transfer rates below modern SSD speeds, making the interface the bottleneck for large sequential transfers. Average latency of 4.16ms and sub-15ms write-seek times define the drive's responsiveness ceiling. Builders needing higher throughput or lower latency for operating systems or databases should consider faster interfaces. This drive fits legacy surveillance DVRs and NVRs that only support SATA 3.0Gb/s.