Toshiba S300 HDWT840UZSVA 4 TB SMR
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Relatively affordable, economical and quiet 3.5" internal hard drive from the 2021 Toshiba S300 family of SATA3 HDDs. This line includes 5 models from 1 TB to 5 TB, firmware and design optimized for digital video streaming in sDVR video recorders, multimedia centers and video surveillance systems based on sNVR network video recorders.Key advantages include low power consumption (less than 4 W in heavy use) and support for simultaneous multi-stream recording from high-definition cameras (up to 64 cameras), which provides increased flexibility and simplifies scalability of video surveillance systems Toshiba S300 HDWT840UZSVA hard drive maintains performance in a wide temperature range from 0 to 70 ° C, which makes it possible to use it with silent passive cooling systems 4 GB capacity will allow you to capture up to 1000 hours of HD video or 4000 hours standard video stream. Due to the low noise level (no more than 22 dB), this model is suitable for home video surveillance systems or multimedia storages located in residential areas. This model adopts tiled magnetic recording (SMR) technology to achieve high capacity, and the magnetic platters themselves rotate at 5400 rpm.
E-Catalog UK editor, Hard Drives (HDD)
Valerii Lenko, edited 20.03.2026
The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog Toshiba 2026 - new arrivals, bestsellers, and the most relevant models Toshiba.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog Toshiba 2026 - new arrivals, bestsellers, and the most relevant models Toshiba.
Buy Toshiba S300 HDWT840UZSVA 4 TB SMR
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Toshiba S300 Surveillance internal hard drive 4 TB 5400 RPM 128 MB 3.5" Serial ATA III HDWT840UZSVA | £100.26 |  | |||
Toshiba S300 Surveillance 3.5 4 TB ATA III (HDWT840UZSVA) HDWT840UZSVA | £161.07 |  | |||
Toshiba HDWT840UZSVA | £179.99 |  | |||
Toshiba S300 SMR 4TB HDWT840UZSVA HDWT840UZSVA | £180.85 |  | |||
| £183.28 |  | ||||
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Series Toshiba S (video surveillance)Compare using chart →
4 TB, built-in, server, 3.5 ", buffer: 256 MB, write SMR, 5400 rpm, connection: SATA3, warranty 3 years
16 TB, built-in, server, helium, 3.5 ", buffer: 1024 MB, write CMR, 7200 rpm, connection: SATA3, warranty 5 years
8 TB, built-in, server, 3.5 ", buffer: 256 MB, 7200 rpm, connection: SATA3, warranty 3 years
2 TB, built-in, server, 3.5 ", buffer: 128 MB, write SMR, 5400 rpm, connection: SATA3, warranty 3 years
8 TB, built-in, server, helium, 3.5 ", buffer: 512 MB, write CMR, 7200 rpm, connection: SATA3, warranty 5 years
10 TB, built-in, server, helium, 3.5 ", buffer: 512 MB, write CMR, 7200 rpm, connection: SATA3, warranty 5 years
6 TB, built-in, server, 3.5 ", buffer: 256 MB, write SMR, 5400 rpm, connection: SATA3, warranty 3 years
20 TB, built-in, server, helium, 3.5 ", buffer: 1024 MB, write CMR, 7200 rpm, connection: SATA3, warranty 5 years
22 TB, built-in, server, helium, 3.5 ", buffer: 1024 MB, write CMR, 7200 rpm, connection: SATA3, warranty 5 years
18 TB, built-in, server, helium, 3.5 ", buffer: 1024 MB, write CMR, 7200 rpm, connection: SATA3, warranty 5 years
4 TB, built-in, server, 3.5 ", buffer: 128 MB, write CMR, 5400 rpm, connection: SATA3, warranty 3 years
6 TB, built-in, server, 3.5 ", buffer: 256 MB, 7200 rpm, connection: SATA3, warranty 3 years
1 TB, built-in, server, 3.5 ", buffer: 64 MB, write CMR, 5400 rpm, connection: SATA3, warranty 3 years
4 TB, built-in, server, 3.5 ", buffer: 128 MB, write SMR, 5400 rpm, connection: SATA3, warranty 3 years
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Model overview based on user reviews
The Toshiba S300 S300 hard drive series receives positive feedback for its excellent performance and suitability for specific tasks like video recording and storage. Users appreciate its high read and write speeds, both random and sequential, making it ideal for streaming video applications. The drive operates quietly with low heating levels, even during continuous use. While some users note slight vibration, it is generally not a significant issue. The drive's stability and vibration suppression are also highlighted, with expectations of long-term reliability. Overall, the Toshiba S300 S300 is praised for its capacity and efficiency in handling multiple data sources simultaneously.
Pros
Cons
A good disk, 6 TB is enough for me and everything is fine with games. I use it a little and have nothing to say but so far so good. Everything is fine, the disk works great. It vibrates, you can get used to it as it’s not that strong  Renal Arifullin: use Toshiba HDWT140UZSVA few months |
It’s just the second month of its operation, it records all this time without stopping, both on weekdays and on weekends, it’s ideal for storing because it records video from a bunch of sources at the same time, you can immediately view the recorded video - no lags, missing files or other problems. The head rotates quietly, the heating level is not high even without rest. Response times, read and write speeds are mixed, random and sequential are fine. It is specifically designed for working with video, because there are nuances for other tasks, well, with tasks where only linear access to data is also suitable. No, the disc is good. Smirnos: use Toshiba HDWT360UZSVA few months |
The opinion is still raw. because the disc was purchased only 2 weeks ago, we read everything we could find about it, and decided that it would be suitable. We expect stable and long-term operation from it, while it has been working non-stop for these 2 weeks, the speeds are high, both reading and writing, both random and multi-threaded, it is designed for recording streaming video. We have 24 cameras installed in the building, and the video from them is uploaded to this hard drive, the old one died 3 years later, in short, after the warranty expired immediately, now we are trying a new drive and a new brand, it has better parameters and a larger volume, and supports the work with more cameras, 12 more cameras will be added soon. Stable. It heats up weakly, there is vibration suppression. No SeSenko: use Toshiba HDWT31AUZSVA less than month |
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