The Western Digital Ultrastar DC HC330 (model WUS721010ALE6L4) is a 10 TB, 3.5-inch enterprise-class hard drive engineered for demanding data centre environments. Spinning at 7,200 RPM and connected via a SATA 6 Gb/s interface, it is built to handle the read/write throughput that rack-mounted servers, direct-attached storage arrays, and network-attached storage enclosures require day in and day out. With a sustained transfer rate of up to 250 MiB/s (approximately 262 MB/s), the HC330 moves large sequential workloads efficiently — whether that is ingesting telemetry data, serving files across a distributed network, or populating a Hadoop-based big-data cluster. The drive is rated for workloads of up to 550 TB per year, making it a practical fit for mid-to-high-intensity applications without the cost premium of all-NVMe deployments. Reliability is central to the HC330’s design. Western Digital specifies a mean time between failures (MTBF) of 2 million hours and an annualised failure rate (AFR) of 0.44%, with a non-recoverable read error rate of no worse than 1 in 10¹⁵ bits — figures that align with enterprise-grade expectations. The drive ships with a 5-year limited warranty, providing long-horizon coverage for multi-year deployments. The HC330 uses an air-filled, sealed design and supports Advanced Format 512e sector size (physically 4 KB sectors). Self-encrypting drive (SED) configurations exist within the HC300 series, though the specific WUS721010ALE6L4 SKU should be confirmed for SED status with the reseller. The drive is suited for RAID configurations, block and file storage architectures, scalable computing clusters, and OEM server builds. Verified Specifications: — Capacity: 10 TB — Form Factor: 3.5-inch — Interface: SATA 6 Gb/s — Spindle Speed: 7,200 RPM — Sustained Transfer Rate: up to 250 MiB/s / up to 262 MB/s (typical) — Sector Format: Advanced Format 512e (4 KB physical sectors) — Non-Recoverable Read Error Rate: 1 in 10¹⁵ bits — MTBF: 2 million hours — Annualised Failure Rate (AFR): 0.44% — Operating Power: 9.2 W (typical) — Idle Power: 8 W (Idle_A) — Rated Workload: up to 550 TB/year — Warranty: 5 years limited
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The WD Ultrastar DC HC330 10TB (WUS721010ALE6L4) is a 3.5-inch, 7200 RPM SATA 6 Gb/s enterprise hard drive delivering up to 262 MB/s sustained throughput, a 2M-hour MTBF rating, and a 5-year limited warranty — built for data centre servers, RAID arrays, and high-capacity storage deployments
Additional information
| Rpm | 7200 |
|---|---|
| Series | Ultrastar |
| Idle (W) | 8 |
| Mtbf (M Hours) | 2 |
| Important Disclosure | As used for storage capacity, 1GB = 1 billion bytes and 1TB = 1 trillion bytes. Actual user capacity may be less depending on operating environment. 512e models can be converted to 4Kn format and vice versa MTBF and AFR specifications are based on a sample population and are estimated by statistical measurements and acceleration algorithms under typical operating conditions for this drive model. MTBF and AFR ratings do not predict an individual drive's reliability and do not constitute a warranty. Advanced Format drive: 4K (4096-byte) physical sec Projected performance. Actual performance may vary. 1MiB = 1,048,576 bytes (2^20), 1MB = 1,000,000 bytes (10^6) SATA models: 8K Queue Depth = 1 @ 40 IOPS, SAS models: 4K Queue Depth = 4 @ Max IOPS Idle specification is based on use of Idle_A |
| Operating (W, Typical) | 9.2 |
| Annualized Failure Rate (Afr) | 0.44%3 |
| Format: Sector Size (Bytes) 4Kn: 512E | 4096 5124 |
| Error Rate (Non-Recoverable Bits Read) | 1 in 10^15 |
| Sustained Transfer Rate (Mib/S, Typical) (Mb/S, Typical) | Up to 250 Up to 262 |
| Warranty | 5 Years |
| Capacity | 10TB |
| Form Factor | 3.5" |
| Interface | SATA 6Gb/s |
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