Western Digital
Western Digital Red Plus WD40EFRX 4 TB Hard Drive - 3.5" Internal - SATA (SATA/600)
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- SKU:
- 18294255
- MPN:
- wd40efrx
- Availability:
- Usually ships the same or next business day. In stock at our IL, PA warehouses.
- Shipping:
- Calculated at Checkout
- Stock Update:
- 12/24/2025 09:43:16 PM PST
Bulk discount rates
Below are the available bulk discount rates for each individual item when you purchase a certain amount
| Buy 2 - 3 | and pay only $179.01 each 179.01 |
| Buy 4 or above | and pay only $171.94 each 171.94 |
- Stock Update:
- 12/24/2025 09:43:16 PM PST
Description
This item is brand-new, factory sealed.
WD Red is designed specifically for small NAS systems that have 1 to 5 drive bays. The drives are designed and extensively tested for compatibility in the unique 24x7 operating environment and for the demanding system requirements of home and small office NAS.
Expanded Solutions
Our formula of success has led growth of WD Red into higher capacities and expansion into new 2.5-inch solutions. We now offer a broader, more comprehensive portfolio of NAS hard drives for our customers. It is not just about NAS drives, it is REDvolutionary.
Next generation experience
Every component, line of code, and product decision was built on our passion and determination to deliver the best NAS experience. The next generation of WD Red hard drives delivers on this promise with massive capacity and NASware 2.0, which further improves drive reliability and protects your data in the event of a power loss or disruption.
Exclusive NASware 2.0 technology
Our exclusive technology, NASware 2.0, makes WD Red thrive in the demanding small-NAS environment. By adding WD Red to your NAS system, not only is everything more efficient and reliable, you can better protect your data investment.
Experienced in NAS
In all of our cultures around the world, first impressions are what leave a mark. With superior technology that is driven to impress, WD Red is a reflection of the most extensive NAS partner compatibility-testing list that is available on the market.* That means when you buy a NAS enclosure, you can trust that WD Red will be the most compatible drive available. Our pride is in our product and our vision is shared with our customers
Interface
SATA 6Gb/sPerformance Specifications
Rotational Speed: IntelliPower
Buffer Size: 64MBTransfer Rates
Buffer to Host (Serial ATA): 6Gb/s (Max)Physical Specifications
Formatted Capacity: 4,000,787 MB
Capacity: 4TB
User Sectors Per Drive: 7,814,037,168Target Performances
MTBF: 1,000,000 HoursEnvironmental Specifications (Shock)
Operating Shock (Read): 65G, 2ms
Non-Operating Shock: 250G, 2msEnvironmental Specifications (Acoustics)
Idle Mode: 25 dBA (Average)
Seek Mode: 28dBA (Average)Temperature
Operating: 32 F to 158 F (-0 C to 70C)
Non-Operating: -40 F to 158 F (-40 C to 70 C)Humidity
Operating: 5-95% RH Non-CondensingVibration
Operating: 0.004 g/Hz (10 to 300 Hz)
Non-Operating: 0.05 g/Hz (10 to 300 Hz)Operating
Linear: 20-300 Hz, 0.75G (0 to peak)Electrical Specifications (Current Requirements)
12V DC:
- Read/Write: 250mA / Idle: 230mA / Standby: 7mA / Sleep: 7mA
5V DC:
- Read/Write: 280mA / Idle: 260mA / Standby: 105mA / Sleep: 105mA
Power Dissipation:
- Read/Write: 4.50 Watts
Idle: 3.30 Watts
Standby: 0.40 Watts
Sleep: 0.40 WattsCompatibility
Operating System: Windows/MacItem Dimension (L"xW"xH")
5.78 x 4 x 1.03
Weight
0.97 lb
Warranty Information
3 Years
Features
Environmentally Friendly:
Yes
Storage System
Yes
Device Supported:
Storage System
Environmental Compliance:
China Restriction of Hazardous Substances (China RoHS)
Restriction of Hazardous Substances (RoHS)
Waste Electrical and Electronic Equipment Directive (WEEE)
Specs
| Power Description | |
| Operating Power Consumption | 4.50 W |
| Physical Characteristics | |
| Form Factor | 3.5" |
| Weight (Approximate) | 1.50 lb |
| Drive Type | Internal |
| Height | 1" |
| Width | 4" |
| Depth | 5.8" |
| Interfaces/Ports | |
| Drive Interface Standard | SATA/600 |
| Drive Interface | SATA |
| General Information | |
| Brand Name | WD |
| Manufacturer Website Address | http://www.wdc.com |
| Marketing Information | Tackle Intensity with WD Red™ Plus Packed with power to handle the small- to medium-sized business NAS environments and increased workloads for SOHO customers, WD Red™ Plus is ideal for archiving and sharing, as well as RAID array rebuilding on systems using ZFS and other file systems. Built and tested for up to 8-bay NAS systems, these drives give you the flexibility, versatility, and confidence in storing and sharing your precious home and work files. For Small or Medium Businesses Stream, backup, share, and organize your digital content with a NAS and WD Red™ Plus drives designed to effortlessly share content with the devices at your home or business. NASware™ 3.0 technology increases your drives' compatibility with your existing network and devices. For larger businesses with up to 24 bays, count on WD Red™ Pro drives to deliver exceptional performance. Exclusive NASware 3.0 Not just any drive will do. Get up to 112TB of capacity in your 8-bay NAS system and with Western Digital's exclusive NASware 3.0 technology, you can optimize each and every drive. Built into every WD Red™ Plus hard drive, NASware 3.0's advanced technology improves storage performance by increasing compatibility, integration, upgradeability, and reliability. Built for Optimum NAS Compatibility WD Red™ Plus drives with NASware™ technology takes the guesswork out of selecting a drive. Optimized for NAS systems, our unique algorithm balances performance and reliability in NAS and RAID environments. Simply put, a WD Red™ Plus drive is one of the most compatible drives available for NAS enclosures. But don't take our word for it. WD Red™ PLUS drives are a reflection of extensive NAS partner technology engagement and compatibility-testing. WD Red™ Pro for Big Business If you're looking for heavy duty performance for NAS, WD Red™ Pro drives deliver exceptional performance for the medium to large business customer with extreme demands. For NAS environments with 9 to 24 bays, WD Red™ Pro drives deliver uncompromising performance and unwavering assurance backed by a 5-year limited warranty. |
| Product Type | Hard Drive |
| Product Name | Red Plus 4TB NAS Hard Drive |
| Manufacturer | Western Digital Corporation |
| Manufacturer Part Number | WD40EFRX |
| Product Model | WD40EFRX |
| Product Line | Red Plus |
| Drive Performance | |
| Buffer | 64 MB |
| Maximum External Data Transfer Rate | 6144 MB/s (48 Gbit/s) |
| Spindle Speed (rpm) | 5400 |
| Endurance (TBW) | 180 TB |
| Network & Communication | |
| Wireless LAN | No |
| Technical Information | |
| Features | IntelliPower |
| Storage Capacity | 4 TB |
Warranty Information
All Items are Brand New, Factory Sealed and come with a standard warranty. [Read our policies]
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Western Digital Red Plus WD40EFRX 4 TB Hard Drive - 3.5" Internal - SATA (SATA/600)
$184.77