Struggling with slow backups and unreliable storage in your small-business NAS? The Western Digital Red Plus (WD40EFPX) 4TB/256MB 3.5" 5400 RPM Hard Drive delivers a dedicated, 24-hour-ready solution that keeps your data safe, accessible and ready for any workload.
Benefits of Western Digital Hard Drive
You gain peace of mind from a drive built for continuous operation, reducing the risk of data loss during RAID rebuilds. Its low vibration design ensures quiet performance even in multi-bay systems, while the 1 000 000-hour MTBF means you won’t be replacing it frequently. The integrated NASware 3.0 technology smooths compatibility with existing networks, and the 256 MB cache speeds up file transfers, giving you a smoother, faster experience day after day.
Key Features of a 4TB Hard Drive
- Capacity: 4 TB. Provides ample room for growing archives, media libraries and backups.
- Spindle Speed: 5400 rpm. Balances energy efficiency with reliable performance for NAS environments.
- Buffer Size: 256 MB. Large cache reduces latency and improves data throughput.
- Interface: SATA 6 Gb/s. Fast connection ensures quick read/write cycles.
- Form Factor: 3.5". Fits standard 8-bay NAS enclosures without modification.
- MTBF: 1 000 000 hours. Guarantees long-term reliability for 24/7 operation.
- Power Consumption: 4.7 W (read/write), 3.1 W (idle), 0.3 W (sleep). Keeps energy costs low while staying ready.
- Noise Level: 23 dBA. Quiet operation suitable for office or home settings.
- Temperature Range: 32 °F - 149 °F operating, -40 °F - 158 °F storage. Handles varied environments safely.
- Error Rate: 1 per 10¹⁴ non-recoverable errors. Ensures data integrity during heavy use.
Usages of a 4TB Hard Drive
Ideal for everyday NAS tasks, this drive fits seamlessly into your workflow:
- Storing and sharing office documents across multiple workstations.
- Backing up critical business data to protect against hardware failure.
- Hosting media files for streaming to home or office devices.
- Supporting RAID-1 or RAID-5 arrays for added redundancy.
- Running continuous surveillance footage archives in small-to-medium setups.
Western Digital Hard Drive
Many buyers worry about choosing a drive that will clash with their NAS or fail under constant load. They often assume any desktop HDD will work, only to face compatibility issues, excessive heat or noisy operation.
Western Digital Red Plus solves these concerns with NASware 3.0 optimisation, a design specifically tested for 8-bay NAS systems, and a 24/7-ready build that tolerates the heat and vibration of multi-drive environments. Its proven reliability and generous 4 TB capacity make it a safe, hassle-free choice for anyone needing dependable storage.
Specifications
| Miscellaneous |
| Miscellaneous / MTBF | 1,000,000hours |
| Storage |
| Storage / Type | Hard drive |
| Header |
| Header / Product Line | WD Red Plus |
| Header / Packaged Quantity | 1 |
| Dimensions & Weight |
| Dimensions & Weight / Height | 1in |
| Dimensions & Weight / Width | 4in |
| Dimensions & Weight / Depth | 5.8in |
| Dimensions & Weight / Weight | 20.1oz |
| Environmental Parameters |
| Environmental Parameters / Min Operating Temperature | 32 °F |
| Environmental Parameters / Max Operating Temperature | 149 °F |
| Environmental Parameters / Min Storage Temperature | -40 °F |
| Environmental Parameters / Max Storage Temperature | 158 °F |
| Environmental Parameters / Sound Emission | 23 dBA |
| General |
| General / Capacity | 4 TB |
| General / Depth | 5.8 in |
| General / Buffer Size | 256 MB |
| General / Width | 4 in |
| General / Weight | 20.1 oz |
| General / Interface | SATA 6Gb/s |
| General / Device Type | Hard drive - internal |
| General / Form Factor | 3.5" |
| General / Features | Conventional magnetic recording (CMR), 24x7 continuous operation, NASware technology |
| General / Height | 1 in |
| Expansion & Connectivity |
| Expansion & Connectivity / Interfaces | 1 x SATA 6 Gb/s |
| Expansion & Connectivity / Compatible Bay | 3.5" |
| Performance |
| Performance / Drive Transfer Rate | 600 MBps (external) |
| Performance / Spindle Speed | 5400 rpm |
| Performance / Internal Data Rate | 180 MBps |
| Reliability |
| Reliability / 24x7 Operation | Yes |
| Reliability / MTBF | 1,000,000 hours |
| Reliability / Non-Recoverable Errors | 1 per 10^14 |
| Reliability / Load / Unload Cycles | 600,000 |
| Hard Drive |
| Hard Drive / Internal Data Rate | 180MBps |
| Hard Drive / Form Factor | 3.5" |
| Hard Drive / Non-Recoverable Errors | 1 per 10^14 |
| Hard Drive / Spindle Speed | 5400rpm |
| Hard Drive / Interface | Serial ATA-600 |
| Hard Drive / Form Factor (Short) | 3.5" |
| Hard Drive / 24x7 Operation | Yes |
| Hard Drive / Form Factor (Short) (metric) | 8.9 cm |
| Hard Drive / Capacity | 4TB |
| Hard Drive / Data Transfer Rate | 600MBps |
| Hard Drive / Buffer Size | 256MB |
| Hard Drive / Hard Drive Type | Internal hard drive |
| Hard Drive / Form Factor (metric) | 8.9 cm |
| Power |
| Power / Power Consumption | 4.7 watt (read) ¦ 4.7 watt (write) ¦ 3.1 watt (idle) ¦ 0.3 watt (sleep) |
| Summary Details |
| HDD capacity | 4 TB |
| HDD speed | 5400 RPM |
| Storage drive buffer size | 256 MB |
| HDD size | 3.5" |
| Interface | Serial ATA III |
