# Western Digital WD Red 5TB NAS Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch 

- Category: Storage
- Brand: Western Digital
- Model: WD50EFRX
- Part number: WD50EFRX
- Price (US): $240.00
- Price last checked: 2026-08-05
- Rating: 3.9/5 from 82 Amazon reviews
- Warranty: 3 years
- Product page: https://buildmypc.net/component-details/storage/western-digital-wd50efrx/

## Specifications

| Spec | Value |
| --- | --- |
| Brand | Western Digital |
| Model | WD50EFRX |
| Maximum Capacity | 5 TB |
| Form Factor | 3.5" (HDD) |
| Cache Memory | 64 MB |
| Interface | SATA 6 Gb/s |

## Key Features

- Specifically designed for use in NAS systems with up to 8 bays
- Tested for 24x7 reliability
- NASware firmware for compatibility
- 3-year limited warranty
- Small and home office NAS systems in a 24x7 enviornment

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