Western Digital
Western Digital WD40EFAX-cr 4TB Red NAS HDD (Renewed)
★★★★★
Reliable Storage Solution for Your NAS System The Western Digital WD Red 4TB Internal Hard Drive is engineered for network-attached storage (NAS) environments. This drive provides dependable performance and ample storage capacity for home and small office NAS systems. Designed to operate 24/7, it...
$139.99*
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*Price sourced from Amazon.com. Last updated:Jun 04, 2026.Price and availability are subject to change.
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Overview
Reliable Storage Solution for Your NAS System
The Western Digital WD Red 4TB Internal Hard Drive is engineered for network-attached storage (NAS) environments. This drive provides dependable performance and ample storage capacity for home and small office NAS systems. Designed to operate 24/7, it offers a balance of performance and reliability.
Specifications:
- Brand: Western Digital
- Model: WD40EFAX-cr
- Capacity: 4TB
- Rotational Speed: 5400 RPM Class
- Interface: SATA 6 Gb/s
- Cache: 256MB
- Form Factor: 3.5 inch
- Workload Rate: Supports up to 180 TB/yr
- Compatibility: Designed for NAS systems with up to 8 bays
- Firmware: NASware firmware for compatibility
Key Features
Specifically designed for use in NAS systems with up to 8 bays
Supports up to 180 TB/yr workload rate Rate is defined as amount of user data transferred to or from drive. Workload Rate is annualized (TB transferred times (8760/recorded power-on hrs)). Workload Rate will vary on hardware/software components
NASware firmware for compatibility
Small and home office NAS systems in a 24/7 environment
3-year manufacturer's limited
Specifications
Capacity
4TB
Model
WD40EFAX-cr
Design Purpose
NAS systems with up to 8 bays
Workload Rate
Up to 180 TB/yr
Firmware
NASware
Environment
Small and home office NAS systems in a 24/7 environment
Warranty
3-year manufacturer's limited
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View on Amazon →Pros & Cons
👍 Pros
- Specifically designed for use in NAS systems with up to 8 bays, ensuring compatibility and optimized performance.
- Supports a high workload rate of up to 180 TB/yr, indicating durability for continuous data transfers.
- Features NASware firmware, enhancing compatibility and reliability within Network Attached Storage environments.
- Optimized for small and home office NAS systems operating in a 24/7 environment, offering consistent performance.
- Comes with a 3-year manufacturer's limited warranty, providing peace of mind and protection for your investment.
👎 Cons
- The "renewed" status implies it may not be a brand-new drive, potentially affecting long-term expectations for some users.
- The workload rate is defined as user data transferred to or from the drive, which may not encompass all types of drive activity.
- The 4TB capacity might be a limitation for very large-scale NAS deployments that require even greater storage per drive.
- While optimized for NAS, specific performance metrics such as read/write speeds are not provided.
- The focus on small and home office NAS systems means it may not be ideally suited or warrant the cost for single-drive or non-NAS use.
Frequently Asked Questions
What is the primary use case for the Western Digital WD40EFAX-cr 4TB Red NAS HDD?
This hard drive is specifically designed for use in NAS (Network Attached Storage) systems, particularly those with up to 8 bays, making it suitable for small and home office environments operating 24/7.
What is the workload rate supported by this drive?
The drive supports a workload rate of up to 180 TB per year, which is defined as the amount of user data transferred to or from the drive.
Does this drive include special firmware for NAS use?
Yes, it features NASware firmware, which is designed to enhance compatibility and performance within NAS environments.
What kind of warranty is included with this renewed hard drive?
This Western Digital Red NAS HDD comes with a 3-year manufacturer's limited warranty.
Is this hard drive suitable for constant operation?
Yes, it is optimized for small and home office NAS systems that run in a 24/7 environment, indicating its suitability for continuous operation.
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