Toshiba S300 4TB Surveillance Hard Drive 3.5" SATA 5400RPM

Toshiba S300 4TB — storage built to record, not just store

This is the drive that goes inside your recorder, not a backup disk you plug in occasionally. The Toshiba S300 4TB is a surveillance-grade hard disk, purpose-built for DVR and NVR boxes that write video continuously, day and night, without a break.

Why that matters: ordinary desktop drives aren't rated for 24/7 write cycles. Push several cameras' worth of footage at one non-stop for months and a standard drive can wear out or drop frames. The S300 series is engineered specifically for that workload.

Key specs

• Capacity: 4TB
• Interface: 3.5" SATA III, 6 Gb/s — fits the drive bay in most modern DVR/NVR units
• Spindle speed: 5400 RPM — favours steady, sequential writing over raw speed, which is what continuous video recording actually needs
• Duty cycle: designed for continuous 24/7 operation
• Use case: multi-camera surveillance recording, residential or small business installs

Before you buy

Check your recorder's maximum supported drive capacity and interface type before ordering — most modern DVR/NVR units take a 3.5" SATA drive, but it's worth confirming against your model's manual. 4TB gives useful headroom for several cameras recording continuously, though how long that footage lasts depends on camera count, resolution and frame rate.