WD Red 4TB NAS Internal Hard Drive - 5400 RPM Class, SATA 6 Gb/s, 256MB Cache, 3.5" - WD40EFAX
Brand: Western Digital · SKU: WD40EFAX · MPN: WD40EFAX · Category: Storage
The WD Red 4TB Internal Hard Drive (WD40EFAX) is purpose-built for NAS systems with up to 8 drive bays, making it ideal for home and small office environments. Equipped with NASware 3.0 technology, this drive is engineered to balance performance and reliability in always-on, high-vibration NAS and RAID environments. It features a 256MB cache and a 5400 RPM class spindle speed to provide efficient, cool, and quiet operation for 24/7 workloads. Please note that this specific model utilizes Shingled Magnetic Recording (SMR) technology, making it suitable for home NAS and personal cloud use cases where idle time is available for background data management.
Specifications
| MTBF | 1,000,000 hours |
|---|---|
| Capacity | 4TB |
| Interface | SATA 6 Gb/s |
| Cache Size | 256MB |
| Disk Speed | 5400 RPM Class |
| Form Factor | 3.5-inch |
| Data Transfer Rate | Up to 180MB/s |
| Recording Technology | SMR (Shingled Magnetic Recording) |
| Warranty | 3-Year Limited Warranty |
| Weight | 1.26 lbs |
| Dimensions | 5.79 x 4.0 x 1.03 inches |
Key Features
Designed specifically for NAS systems with 1-8 bays, the WD Red WD40EFAX provides the storage reliability needed for home and small business users to stream, backup, and share their digital content seamlessly.
Frequently Asked Questions
Is this product genuine OEM?
Yes, this WD Red 4TB NAS Internal Hard Drive - 5400 RPM Class, SATA 6 Gb/s, 256MB Cache, 3.5" - WD40EFAX (WD40EFAX) is 100% genuine Western Digital hardware. All our products are verified by certified technicians and come with clean serial numbers ready for service contract registration.
What warranty is included?
This WD Red 4TB NAS Internal Hard Drive - 5400 RPM Class, SATA 6 Gb/s, 256MB Cache, 3.5" - WD40EFAX includes our standard 3-Year Warranty covering all manufacturing defects. We also offer advanced replacement options for minimal downtime.
How long does shipping take?
We offer free ground shipping which typically takes 3-5 business days. Expedited shipping options are available at checkout for faster delivery.
Can I return this product?
Yes, we have a 30-day return policy on all products. Restocking fees may apply for opened items. Please see our return policy for complete details.
Is the WD Red 4TB NAS Internal Hard Drive - 5400 RPM Class, SATA 6 Gb/s, 256MB Cache, 3.5" - WD40EFAX compatible with my system?
Please check the specifications tab for detailed compatibility information. Our technical team is available to assist with compatibility questions for the WD40EFAX.
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