WD Gold Enterprise-Class SATA HDD – 18TB (WD181KRYZ)

The Western Digital Gold Enterprise Class SATA HDD – 18TB – WD181KRYZ is a premier 3.5-inch internal hard disk drive, meticulously engineered for the most rigorous 24/7 enterprise and datacenter environments.

Key Features

• Capacity: A substantial 18TB, providing immense storage for large datasets, extensive archives, and demanding applications in enterprise settings.
• Form Factor: Standard 3.5-inch, ensuring broad compatibility with server bays, storage arrays, and enterprise-grade workstations.
• Interface: SATA III (6 Gb/s), offering a high-speed and widely compatible connection for efficient data transfer.
• Rotational Speed (RPM): 7200 RPM, delivering robust performance for a mechanical drive, crucial for responsiveness and throughput in multi-user and data-intensive scenarios.
• Max. Sustained Transfer Rate: Up to 269 MB/s (internal data rate), indicating strong sequential read/write capabilities vital for large file transfers and continuous data streams.
• Workload Rating: An industry-leading 550TB per year. This metric is a key differentiator for enterprise drives, signifying its ability to handle an extremely high volume of data read/write cycles annually – far exceeding the endurance of consumer-grade drives.

Specifications

Reliability:

• • MTBF (Mean Time Between Failures): Up to 2.5 million hours. This exceptional rating underscores its suitability for continuous, mission-critical operations where minimizing downtime is paramount.
  • Load/Unload Cycles: 600,000 cycles, showcasing its mechanical durability.
• HelioSeal™ Technology: As a high-capacity drive (12TB and above in the Gold series), it utilizes helium-filled technology. This allows for thinner platters and reduced internal friction, leading to higher capacity, lower power consumption, and improved reliability.
• RAID-specific, Time-Limited Error Recovery (TLER): This feature is essential for RAID (Redundant Array of Independent Disks) environments.
• Dynamic Fly Height Technology: Adjusts each read-write head’s fly height in real time for optimal reliability and read/write performance across the platters.
• Energy-Assisted Magnetic Recording (EAMR) and Triple Stage Actuator (TSA): For capacities 16TB and above , these technologies enable higher areal density and enhance head-positioning accuracy, contributing to better performance and data integrity.
• Compatibility: Extensively tested and validated for broad compatibility with various OEM storage systems, SATA controllers, and host bus adapters, ensuring seamless integration into complex IT infrastructures.
• Warranty: Backed by a robust 5-year limited warranty, reflecting its enterprise-grade design and intended long-term, continuous operation in demanding environments.
• Power Consumption (Typical): Operational: ~6.5W; Idle: ~5.6W. The HelioSeal technology contributes to its relatively lower power draw for its capacity.
• Acoustics (Average): Idle Mode: 20 dBA; Seek Mode: 36 dBA.
• Formatted Capacity: 512e (512-byte emulation) user sectors, providing broad compatibility with legacy and modern systems.
• Recording Technology: Confirmed to use CMR (Conventional Magnetic Recording), which ensures predictable write speeds and consistent random-write performance, crucial for enterprise applications.

Ideal Use Cases

• Enterprise Servers: Ideal for applications requiring high uptime, consistent performance, and robust data integrity in a 24/7 operational environment.
• Big Data Analytics and Mining: For scenarios where massive datasets are constantly accessed, processed, and written.
• High-End, Continuous Video Surveillance Systems: That require highly reliable and performant storage for long-term continuous recording and archiving of large volumes of video data.
• Hybrid Cloud and Colocation Storage: For businesses needing scalable local or distributed storage solutions with enterprise-level dependability.

Key Details

• Brand: Western Digital
• Series: WD Gold HDD
• Model Number: WD181KRYZ
• Storage Capacity: 18 Terabytes (TB)
• Form Factor: 3.5-Inch (Standard drive size for servers and workstations)
• Interface: SATA III (6 Gb/s)
• Disk Speed (RPM): 7200 RPM (Revolutions Per Minute, indicating high rotational speed for performance)
• Recording Technology: CMR (Conventional Magnetic Recording – preferred for consistent, predictable performance in enterprise arrays)
• Cache Size: 512 Megabytes (MB)

Performance & Endurance

• Transfer Rate: Up to 269 MB/s (Megabytes per second)
• Workload Rating: Up to 550 TB/year
• MTBF (Mean Time Between Failures): Up to 2.5 million hours (Indicates industry-leading reliability and a very long expected operational lifespan)

Physical & Environmental

• Dimensions (L × W × H): 5.79″ × 4″ × 1.03″ (147.0 mm × 101.6 mm × 26.1 mm)
• Weight: 690 grams
• Operating Temperature: 5°C to 60°C (41°F to 140°F)
• Non-Operating Temperature: -40°C to 70°C (-40°F to 158°F)

Certifications & Warranty

• Certifications: BSMI, ICES-003/NMB-003, CE, FCC, KC, Maghreb, RCM, UKCA, VCCI, CB-Scheme, TUV, UL (Ensures compliance with various international quality, safety, and environmental standards)
• Warranty: 5-Year Limited Warranty (Reflecting its enterprise-grade durability and intended use)