# Western Digital 10TB WD Red NAS Internal Hard Drive - 5400 RPM Class, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" 

- Category: Storage
- Brand: Western Digital
- Model: WD100EFAX
- Part number: WD100EFAX
- Price (US): $574.00
- Price last checked: 2026-08-05
- Rating: 4.7/5 from 231 Amazon reviews
- Warranty: 5 years
- Product page: https://buildmypc.net/component-details/storage/western-digital-wd100efax/

## Specifications

| Spec | Value |
| --- | --- |
| Brand | Western Digital |
| Model | WD100EFAX |
| Maximum Capacity | 10 TB |
| Form Factor | 3.5" (HDD) |
| Cache Memory | 256 MB |
| Interface | SATA 6 Gb/s |

## Key Features

- Specifically Designed for use in NAS systems with up to 8 bays
- Suppots up to 180 TB/yr workload rate; Workload Rate is defined as the amount of user data transferred to or from the hard drive; Workload Rate is annualized (TB transferred times (8760 / recorded Power on hours)); Workload Rate will vary depending on Your hardware and Software components and configurations
- NASware firmware for Compatibility
- Small and Home office NAS systems in a 24/7 environment
- 3 year manufacturer's limited warranty

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