This article covers WD Red Pro 4TB NAS 3.5インチ内蔵ハードドライブ.

Overview

Western Digital's WD Red Pro series is purpose-built for NAS (Network Attached Storage) environments, offering a balance of performance, reliability, and endurance. The 4TB model (WD4002FFWX) spins at 7200 RPM, uses a SATA 6Gb/s interface, employs CMR (Conventional Magnetic Recording) technology, and packs 256MB of cache. Designed for 24/7 operation in systems with up to 24 bays, this drive targets small-to-medium businesses that need consistent file sharing, backup, and archiving capabilities. With NASware 3.0 technology for error recovery control and 3D Active Balance Plus for vibration compensation, the WD Red Pro handles RAID arrays gracefully. Its workload rate of 300TB/year means it can sustain heavy multi-user access without premature wear. The 5-year warranty further underscores its enterprise-grade positioning.

Compatibility Guide

The WD Red Pro 4TB is a standard 3.5-inch internal hard drive with a SATA 6Gb/s interface. It fits into any desktop PC or NAS enclosure that has a 3.5-inch drive bay and a SATA port. Most consumer and business NAS units from QNAP, Synology, ASUSTOR, and others support this drive natively. Hot-swap bays work without issue. Power is supplied via a standard SATA power connector. Power consumption is modest: about 3.5W at idle and 6.8W under load. When installing multiple drives, ensure your NAS power supply has sufficient headroom. The drive is compatible with all major operating systems including Windows, macOS, and Linux.

Product Info

The WD Red Pro 4TB (model WD4002FFWX) launched in 2020 and sits in the mid-high tier of NAS hard drives. It offers a 5-year warranty and a 300TB/year workload rating. Pricing typically ranges from ¥9,000 to ¥10,000 in Japan, making it a solid value for its reliability. The CMR recording technology ensures consistent write performance in RAID configurations, unlike SMR drives that can suffer from degraded write speeds during rebuilds. Key specifications include a 7200 RPM spindle speed, 256MB cache, and a sustained data transfer rate of up to 214 MB/s (typical). The drive supports up to 24 bays and is optimized for RAID environments.

Best Use Cases

Small business NAS administrators: If you run a file server or backup target with RAID5/6, the WD Red Pro's CMR technology and high workload rating provide peace of mind. The 5-year warranty reduces total cost of ownership. Home users with always-on storage: For Plex media servers, photo archives, or security camera NVRs, this drive handles continuous operation well. However, if silence is paramount, consider the 5400RPM WD Red (non-Pro) instead. * Creative professionals using NAS: When multiple editors need to access project files simultaneously, the 7200RPM speed and stable writes improve workflow. But don't expect SSD-level random I/O.

Things to Consider

The 7200RPM spindle makes this drive slightly louder and more vibration-prone than 5400RPM alternatives. If your NAS sits in a living room or bedroom, the noise might be noticeable. Also, 4TB may feel limiting for large media libraries; consider higher capacities (6TB, 8TB, etc.) or multiple drives in RAID. This drive is overkill for a simple desktop PC boot drive—a WD Blue or Black would be more cost-effective. Avoid mixing CMR and SMR drives in the same RAID array, as performance will suffer. Finally, while compatible with external USB enclosures, the drive's performance is bottlenecked by USB 3.0 speeds. ## FAQ
Q: Can I use this drive internally in a PS5 or Xbox Series X? A: No, those consoles only accept NVMe SSDs for internal storage. You can connect it externally via USB for game storage, but it's not recommended for playing modern games directly. Q: What's the difference between WD Red Pro and WD Red (non-Pro)? A: The Pro spins at 7200 RPM vs 5400 RPM, supports up to 24 bays vs 8 bays, and has a 300TB/year workload vs 180TB/year. The Pro also includes a 5-year warranty vs 3-year. The price difference is about ¥2,000, making the Pro a better choice for serious NAS users. Q: Is this drive suitable for RAID 0? A: Yes, CMR technology ensures consistent performance in RAID 0. However, RAID 0 offers no redundancy—if one drive fails, all data is lost. For critical data, use RAID 5 or RAID 6.

Product Disclosure (Amazon)

  • Manufacturer: ウエスタンデジタル(Western Digital)
  • Seller: P-LAB
  • Fulfilled by: P-LAB
  • ASIN: B08L6N8L2J
  • Note: This article covers a manufacturer-made product based on Amazon listing details.