Western Digital
Western Digital WD4001FYYG 4TB Enterprise HDD - SAS, 7200 RPM
★★★★★
Enterprise-Class Storage with Western Digital RE SAS HDD The WD RE SAS 4TB Enterprise Hard Drive delivers robust performance and reliability for demanding storage environments. Engineered for 24/7 operation in multi-drive systems, this drive offers high capacity and data integrity for mission-cri...
$165.00*
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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
Enterprise-Class Storage with Western Digital RE SAS HDD
The WD RE SAS 4TB Enterprise Hard Drive delivers robust performance and reliability for demanding storage environments. Engineered for 24/7 operation in multi-drive systems, this drive offers high capacity and data integrity for mission-critical applications.
Specifications:
- Brand: Western Digital
- Model: WD4001FYYG
- Capacity: 4 TB
- Form Factor: 3.5 Inch
- Interface: SAS
- Rotational Speed: 7200 RPM
- Cache: 32 MB
- Compatibility: PC
Key Features
Industry's highest capacity nearline drive - WD RE SAS hard drives are available in capacities ranging from 1 TB to 4 TB to suit even the most demanding storage needs
Highest performance for business-critical applications - WD RE delivers 6 Gb/s transfer rates, sustained sequential data rates of 182 MB/s and high random I/O rates
Designed for quality and reliability - With a field-tested 1.4 million hour MTBF, this high performance drive delivers the highest level of reliability for 24x7 operation in up to 100% duty cycle applications
Dual port, full duplex connectivity - Offers higher reliability, performance and data availability by eliminating single points of failure, designed for leading business-critical Enterprise topologies
Full internal input/output error detection and correction code data integrity protection means the drive finds and corrects potential errors before they ever surface
Specifications
Capacity
4 TB
Interface
SAS
Rotational Speed
7200 RPM
Transfer Rate
6 Gb/s
Sustained Sequential Data Rate
182 MB/s
Mean Time Between Failures (MTBF)
1.4 million hours
Connectivity
Dual port, full duplex
Operation Duty Cycle
Up to 100%
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View on Amazon →Pros & Cons
👍 Pros
- Offers a substantial 4 TB storage capacity, accommodating even the most demanding storage requirements for enterprises.
- Delivers a high sustained sequential data rate of 182 MB/s and high random I/O rates for robust performance in business-critical applications.
- Features a field-tested 1.4 million hour MTBF, ensuring a high level of reliability for 24x7 operation.
- Equipped with dual port, full duplex SAS connectivity, enhancing reliability and data availability by eliminating single points of failure.
- Includes full internal input/output error detection and correction code data integrity protection, preventing potential errors before they surface.
👎 Cons
- Utilizes a SAS interface, which requires specific controller hardware and may not be compatible with standard SATA consumer systems.
- The 7200 RPM rotational speed, while good, is not as fast as modern SSDs for pure speed-sensitive applications.
- Designed as a nearline drive, indicating it's optimized for high capacity and reliability rather than extreme transactional speed.
- Specific cache size is not provided, which could be a factor in highly I/O intensive workloads.
- Its enterprise-grade features and SAS interface might be overkill and more expensive for typical desktop or home server use.
Frequently Asked Questions
What is the capacity of the Western Digital WD4001FYYG hard drive?
The Western Digital WD4001FYYG Enterprise HDD offers a substantial 4 TB of storage capacity, making it suitable for large data storage needs.
What type of interface does this hard drive use?
This drive uses a SAS (Serial Attached SCSI) interface, which is common in enterprise environments for its reliability and performance.
How fast is the data transfer rate for this drive?
The WD RE SAS hard drive delivers 6 Gb/s transfer rates and sustained sequential data rates of 182 MB/s, ensuring high performance for business-critical applications.
Is this hard drive designed for continuous operation?
Yes, with a field-tested 1.4 million hour MTBF and design for up to 100% duty cycle applications, this drive is built for reliable 24x7 operation.
What are the benefits of the dual port, full duplex connectivity on this drive?
The dual port, full duplex connectivity provides higher reliability, enhanced performance, and increased data availability by eliminating single points of failure, which is crucial for enterprise topologies.
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