This article covers 東芝 S300 PRO 4TB 監視 3.5インチ 内蔵ハードドライブ.

Overview

The Toshiba S300 PRO 4TB (HDWTA40UZSVAR) is a 3.5-inch internal hard drive built specifically for 24/7 surveillance systems. It uses CMR (Conventional Magnetic Recording) technology, features a SATA 6 Gb/s interface, spins at 7200 RPM, and packs a 512 MB cache. Designed to support up to 64 HD cameras, it offers a workload rating of 300 TB per year and a 1.2 million hour MTBF. This drive excels in NVR/DVR environments where continuous, dependable recording is non-negotiable.

Compatibility Guide

The drive uses the standard 3.5-inch SATA form factor, so it fits into any desktop PC, NAS enclosure, or security recorder with a spare 3.5-inch bay. The SATA 6 Gb/s interface is backward compatible with SATA 3 Gb/s controllers. Power is supplied via a standard SATA power connector. Its built-in RV sensor minimizes rotational vibration in multi-bay setups, making it suitable for RAID configurations. No special drivers are required; after formatting, the drive is ready for use with any modern operating system.

Product Info

The S300 Pro 4TB launched in 2024 with a typical street price around ¥65,000. It comes with a 5-year limited warranty from Toshiba. The use of CMR over SMR ensures consistent write performance during sustained recording. The 7200 RPM spindle and 512 MB cache deliver sequential read/write speeds of roughly 250 MB/s in real-world use. This drive sits in the mid-to-high tier of surveillance HDDs, offering enhanced durability and workload tolerance compared to general-purpose desktop HDDs.

Best Use Cases

  • Home security users: Ideal for systems with 8–16 cameras recording 24/7. The 300 TB/year workload rating guarantees endurance for continuous writes.
  • Small business surveillance: For stores or offices with up to 64 HD cameras. The RV sensor helps maintain performance in multi-drive NVR enclosures.
  • NAS long-term storage: While designed for surveillance, the CMR technology and high MTBF also suit NAS file servers. However, it is priced higher than general-purpose NAS drives like the WD Red Plus.

Things to Consider

This drive is overkill and overpriced for a standard desktop PC boot drive; you're better off with an SSD. Its sequential speeds are far below any SSD, so it should not be used as an OS drive. Competitors like Seagate SkyHawk and WD Purple offer similar specifications, so check your NVR's compatibility list before buying. If you need more than 4 TB for many cameras, consider the 6 TB or 8 TB variants. The drive is not silent — the 7200 RPM motor produces noticeable noise, which may be a concern in a living room setup.

FAQ

Q: Can I use this drive for general desktop storage?
A: Yes, but it's more expensive than general-purpose HDDs like Seagate Barracuda. It excels in sustained writes, but random access performance is similar.
Q: What's the advantage of CMR over SMR?
A: CMR avoids the write performance degradation that SMR drives suffer from during sustained writes. This makes the S300 Pro much more reliable in RAID rebuilds and continuous recording.
Q: Is it noisy?
A: The 7200 RPM spindle makes it louder than 5400 RPM models, but for surveillance setups typically located in a server room or basement, the noise is usually acceptable.

Product Disclosure (Amazon)

  • Manufacturer: 東芝(TOSHIBA)
  • Seller: GlassOnion Shop
  • Fulfilled by: GlassOnion Shop
  • ASIN: B0CYQZ8KP9
  • Note: This article covers a manufacturer-made product based on Amazon listing details.