Western Digital WD Red Pro 22TB | WD221KFGX NAS HDD, helium-filled, OptiNAND-enhanced, 7200 RPM, 6 Gb/s SATA, RV sensors, designed for high-performance RAID NAS storage.
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The Western Digital WD Red Pro 22TB | WD221KFGX is a powerful and reliable 22TB NAS hard drive designed specifically for RAID-optimised, multi-bay NAS systems. This WD Red Pro 22TB | WD221KFGX model is engineered to deliver enterprise-class performance, scalability, and durability to meet the demanding needs of medium- to large-sized business environments and creative professionals. Featuring helium-filled technology, the WD221KFGX reduces friction and power consumption while providing higher storage density.
This WD Red Pro 22TB | WD221KFGX hard drive includes Western Digital’s exclusive OptiNAND technology, leveraging integrated iNAND embedded flash to improve performance and reliability by handling crucial housekeeping functions efficiently. The drive further enhances stability with rotational vibration (RV) sensors that counteract vibration in crowded NAS enclosures, maintaining consistent performance. WD Red Pro 22TB | WD221KFGX supports a workload rate of up to 550 terabytes per year and boasts a mean time between failure (MTBF) of 2.5 million hours, ensuring exceptional reliability for 24/7 multi-user NAS applications.
Formatted Capacity: 22TB
Drive Technology: Helium-filled to enhance performance and energy efficiency
Interface: SATA 6 Gb/s for high-speed data transfer
RPM: 7200 RPM for faster access and data throughput
Cache Memory: 512MB for improved overall drive speed
OptiNAND Technology: Integrated embedded flash for better performance and capacity
Rotational Vibration (RV) Sensors: Reduces performance degradation from vibration
Workload Rate: Rated for 550 TB/year
MTBF: 2.5 million hours for superior reliability
Advanced Format: 4K sector size for improved data integrity
Noise Levels: 20 dBA idle acoustic rating for quieter operation
Power Management: Average power consumption approximately 6.8W during active use
Dimensions: 3.5-inch form factor (26.1 mm height, 147 mm length, 101.6 mm width)
Warranty: 5-year limited warranty with Western Digital world-class support
RoHS Compliant: Yes, adhering to environmental standards
| Specification | Details |
|---|---|
| Model Number | WD221KFGX |
| Formatted Capacity | 22TB |
| Drive Technology | Helium-filled |
| Interface | SATA 6 Gb/s |
| Form Factor | 3.5-inch |
| Rotational Speed (RPM) | 7200 |
| Cache Memory | 512 MB |
| OptiNAND Technology | Yes |
| Rotational Vibration Sensors | Yes |
| Advanced Format | 4K sectors (AF) |
| Native Command Queuing | Yes |
| Data Transfer Rate (max) | 6 Gb/s |
| Internal Transfer Rate (max) | 265 MB/s |
| Workload Rate (TB/year) | 550 |
| MTBF (Mean Time Between Failure) | 2,500,000 hours |
| Load/Unload Cycles | 600,000 |
| Non-Recoverable Read Errors | 1 in 10^15 bits read |
| Operating Temperature | 0°C to 65°C |
| Non-operating Temperature | -40°C to 70°C |
| Acoustics (Idle/Seek) dBA | 20 / 32 |
| Power Consumption (Active) | 6.8 W |
| Dimensions (H x L x W) | 26.1 mm x 147 mm x 101.6 mm |
| Weight | 1.48 lb (0.67 kg) |
| Warranty | 5 years limited |
| RoHS Compliant | Yes |
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