WD Red Plus
WD Red Plus 4TB SATA (128MB cache variant) (WD40EFZZ)
SATA 6Gb/s · 3.5" · 5,400 RPM · 128 MB · 4TB
MPNWD40EFZZ
EAN718037905754
CategoryHard Disk Drives
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Price Trend
Last updated: 2026-09-30Note: this chart shows historical reference pricing for trend insight only — it is not a live quote. To place an order or get current pricing, please contact us or your dedicated sales manager.
Full Specifications
Data sourced from WD product specifications
| Drive | |
| Series | Red Plus |
| Capacity | 4TB |
| Form Factor | 3.5" |
| Interface | SATA 6Gb/s |
| RPM | 5,400 RPM |
| Cache | 128 MB |
| Performance | |
| Sustained Transfer Rate | 180 MB/s |
| Workload Rating | 180 TB/year |
| Reliability | |
| MTBF | 1,000,000 hours |
| Power (Idle) | 2.9W |
| Power (Operating) | 4.5W |
| Product | |
| Brand | WD |
| Segment | NAS |
| MPN | WD40EFZZ |
| EAN | 718037905754 |
| Physical | |
| Weight | 0.73 kg |
| Package Dimensions | 17.3 x 12 x 5 cm |
Support & Downloads
WD Red Plus 4TB SATA (128MB cache variant) Firmware Update
WD Support →WD Red Plus 4TB SATA (128MB cache variant) Datasheet
WD Support →