Description
The Western Digital Ultrastar DC HA340 series represents a pinnacle of air-filled hard drive technology, specifically engineered to meet the rigorous demands of enterprise-level workloads. By combining field-proven hardware with cutting-edge innovations, these 3.5-inch HDDs offer a high access density (IOPS/TB) that is essential for data-intensive applications. Operating at 7200 RPM with a 256MB cache, the HA340 ensures consistent throughput of up to 267MB/s, making it a reliable backbone for servers requiring high-speed data retrieval and long-term stability.
- Data Center Architects: Professionals requiring high IOPS/TB density to optimize server rack performance and storage efficiency.
- IT Infrastructure Managers: Systems administrators looking for seamless integration and quick qualification cycles using established hardware platforms.
- Small to Medium Business Owners: Users needing enterprise-grade reliability for local file servers, mail servers, or database management.
- Surveillance System Integrators: Operators requiring 24/7 operational stability and high-capacity storage for multi-stream video recording.
- Creative Professionals: Video editors and photographers who need a high-capacity, CMR-based storage solution for secure project archiving.
- Capacity: 4TB (WUS721204BLE6L4) or 8TB (WUS721208BLE6L4)
- Form Factor: 3.5-inch
- Interface: SATA 6Gb/s
- Rotational Speed: 7200 RPM
- Recording Technology: Conventional Magnetic Recording (CMR)
- Cache Size: 256MB
- Sustained Transfer Rate: Up to 267MB/s
- Random Read/Write: 154 / 425 IOPS
- Reliability: 2,000,000 hours MTBF
- Warranty: 5-Year Limited Warranty
- Dimensions: 146.99mm x 101.6mm x 26.11mm
- Weight: 0.72kg
Operating the Ultrastar DC HA340 in a multi-drive environment highlights its advanced vibration protection systems. The integration of Rotational Vibration (RV) sensors allows the drive to proactively detect and counteract disturbances caused by adjacent drives in a chassis. Furthermore, the multi-axis shock sensors and dynamic fly height technology work in tandem to maintain head-to-media spacing, ensuring data integrity even during minor physical events. This results in a stable, high-performance experience that minimizes latency and prevents performance degradation in high-density storage arrays.
Compared to standard consumer-grade desktop drives, the Ultrastar DC HA340 offers a significantly higher Mean Time Between Failures (MTBF) of 2 million hours and a robust 5-year warranty. While consumer drives often utilize Shingled Magnetic Recording (SMR) to increase capacity at the cost of write speed, the HA340 utilizes Conventional Magnetic Recording (CMR) to maintain high performance during sustained write operations. Unlike helium-filled drives which are often reserved for ultra-high capacities, this air-filled design focuses on maximizing IOPS for the 4TB and 8TB segments, providing a cost-effective yet high-performance alternative for specific enterprise tiers.
Is the WD Ultrastar DC HA340 compatible with NAS systems?
- Yes, its enterprise-grade vibration sensors and CMR technology make it highly suitable for multi-bay NAS environments and RAID configurations.
What is the benefit of CMR over SMR in this drive?
- CMR (Conventional Magnetic Recording) ensures consistent write performance and faster data rebuilding times compared to SMR, which is critical for enterprise workloads.
How does the Rotational Vibration (RV) sensor improve performance?
- The RV sensor detects external vibrations and adjusts the drive head position in real-time, preventing data errors and maintaining speed in high-density server racks.
What operating systems support this hard drive?
- The HA340 is fully compatible with Windows, Windows Server, and various Linux distributions, ensuring broad integration across different platforms.
What does the 2 million hours MTBF rating signify?
- MTBF (Mean Time Between Failures) is a statistical measure of reliability; a 2 million hour rating indicates the drive is engineered for high-availability, 24/7 enterprise use cases.
