Product Description
What it's for
The Toshiba S300 4TB is a surveillance-grade hard drive built for DVR and NVR recorders that run 24/7, not desktop or backup use. It's the storage component you spec when the camera count or retention period pushes a job past what a standard drive is rated for.
Key specs
- Capacity: 4TB
- Interface: Uses the SATA III interface at 6 Gb/s and comes in a 3.5-inch form factor.
- Spindle speed: 5400 RPM
- Built to run non-stop, 24 hours a day, 7 days a week.
- Series: Toshiba S300, surveillance-optimised
- MPN / alt code: Also sold under the code HDWT840UZSVA, this drive is HDD-4TB-TOSHIBA-S300.
Where it fits on a job
The 3.5" SATA III interface fits the drive bay on most modern DVR and NVR chassis, so it's a straightforward swap-in for a build or a capacity upgrade. The 5400 RPM spindle favours stable, sequential write performance over raw speed — the right trade-off for continuous video ingest rather than general computing.
Selection notes for installers
Multi-camera setups place sustained write load on the drive around the clock, which is where consumer-grade disks tend to struggle. The S300 is built for that workload, making it a reasonable default for residential, small business and commercial CCTV installations where multiple cameras record simultaneously and the system can't afford dropped frames from drive strain.
Specifications
- Brand
- Toshiba
Technical Specifications
Frequently Asked Questions
Is the Toshiba S300 4TB suitable for continuous 24/7 recording?
Yes — the S300 series is designed specifically for continuous 24/7 operation, which is the workload DVR and NVR surveillance recording places on a drive.
Will this drive fit a standard DVR or NVR recorder?
It uses a 3.5-inch SATA III (6 Gb/s) interface, which fits most modern DVR and NVR chassis taking a standard 3.5-inch drive bay.
Can this drive handle multiple cameras recording at once?
It's optimised for multi-camera surveillance environments, supporting simultaneous recording from several cameras on one system.
What does the 5400 RPM spindle speed mean for recording performance?
It gives stable, steady sequential performance suited to continuous video write streams, rather than the higher-speed profile aimed at general desktop tasks.











