- 4TB storage capacity ideal for home or small office NAS systems, backups, media libraries, and file sharing
- Designed for 24/7 operation in NAS environments with up to 8 bays
- NASware™ 3.0 firmware enhances compatibility, reliability, and system performance
- 5400 RPM class for low power consumption and reduced heat
- 256MB cache improves read/write speeds and performance in demanding applications
- Optimized for RAID configurations, file servers, media streaming, and private cloud setups
- Designed and tested for compatibility with top NAS system manufacturers like Synology, QNAP, and ASUSTOR
| Specification | Detail |
|---|---|
| Brand | Western Digital (WD) |
| Series | WD Red NAS |
| Model | WD40EFZX |
| Capacity | 4TB |
| Form Factor | 3.5-inch |
| Interface | SATA III 6Gb/s |
| Rotational Speed | 5400 RPM class |
| Cache | 256MB |
| NAS Compatibility | Optimized for NAS systems (up to 8 bays) |
| Workload Rate | Up to 180TB/year |
| Operating Temperature | 0°C to 65°C |
| Non-operating Temp | -40°C to 70°C |
| Dimensions | 147 x 101.6 x 26.1 mm |
| Weight | Approx. 570g |
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