Western DigitalData Recovery
The most reliable drives in Backblaze's fleet at just 0.59% AFR; 62% better than industry average. Expert WD recovery in our Austin lab.
Industry-Leading Reliability
Why Western Digital Leads in Reliability
Western Digital maintains the most impressive reliability profile in Backblaze's comprehensive drive testing program. With a 2024 annual failure rate of just 0.59% (less than half the 1.57% industry average), WD HDDs demonstrate exceptional durability across their entire product line.
The Ultrastar series shows particularly outstanding performance, with models achieving just 0.45% lifetime AFR. This exceptional reliability means Western Digital users experience far fewer catastrophic failures, but when failures do occur, our Austin lab is equipped with the specialized tools and expertise to recover your data.
Western Digital's 2012 acquisition of HGST means our recovery team works with both manufacturer lineups; each with distinct firmware architectures, ROM structures, and mechanical designs. Our technicians maintain comprehensive knowledge of both brands, ensuring brand-appropriate diagnostics.
Western Digital Reliability Data
Real-world statistics from Backblaze's fleet of 300,000+ drives
Western Digital Reliability Statistics
excellentWhy WD Leads in Reliability
- Consistent quality: No models with elevated failure rates in Backblaze data
- Ultrastar excellence: Enterprise line shows 0.45-0.63% AFR
- Predictable failures: When WD drives fail, it's typically isolated mechanical wear
- Stable firmware: WD's firmware remains reliable even as mechanical systems degrade
Model Failure Rates
WD's consistency is remarkable; all monitored models show excellent reliability.
Model-Specific Failure Rates
Real failure data from Backblaze's fleet of 80,237+ drives
| Model | Capacity | Drives | Drive Days | Failures | AFR | Rating |
|---|---|---|---|---|---|---|
WDC WUH722222ALE6L4 | 22TB | 44,725 | 18,479,108 | 318 | 0.63% | Excellent |
WDC WUH721414ALE6L4 | 14TB | 8,866 | 15,482,803 | 223 | 0.53% | Excellent |
WDC WUH721816ALE6L4 | 16TB | 26,646 | 25,974,127 | 322 | 0.45% | Excellent |
When WD Drives Do Fail
Western Digital's low failure rates reflect rigorous engineering and manufacturing quality control. Unlike drives from manufacturers with more variable reliability profiles, WD's consistency means that when a drive fails, it's typically due to isolated mechanical wear or a specific component defect rather than systemic design flaws.
When WD drive failures do occur, they typically manifest as mechanical issues: worn read/write heads, spindle motor faults, or platter surface degradation. These failures are often recoverable through head stack replacement, spindle bearing repair, or careful platter recovery work.
SMART Warning Signs for Western Digital Drives
How to detect failing drives before data loss occurs
Backblaze Research Finding: 76.7% of drive failures showed non-zero values in SMART 5, 187, 188, 197, or 198 before failure
Strongest predictor: SMART 197 (Current Pending Sector Count) ; 391x higher failure rate when SMART 197 > 100
SMART 5: Reallocated Sector Count
85x risk when highCount of sectors that have been remapped due to read/write errors. The drive has found bad sectors and moved data to spare areas.
Any non-zero value indicates the drive is using spare capacity to work around bad sectors. Values over 100 are a strong warning sign. Back up immediately and plan for replacement. Values under 10 may be acceptable short-term but warrant monitoring.
SMART 197: Current Pending Sector Count
391x risk when highCount of sectors waiting to be remapped. These sectors had read errors and are marked as 'unstable' - the drive will try to remap them on next write.
This is the strongest single predictor of imminent drive failure. Any non-zero value means the drive is currently struggling to read data. Values over 100 indicate critical failure is likely within days or weeks. Stop using the drive and seek professional recovery immediately.
SMART 198: Offline Uncorrectable Sector Count
75x risk when highCount of uncorrectable errors found during offline scans. Similar to SMART 197, but detected during background self-tests rather than normal operations.
High values indicate sectors that couldn't be recovered even during dedicated scans. Combined with SMART 197, this gives a complete picture of unrecoverable sectors. Non-zero values warrant immediate backup.
WD-Specific Recovery Capabilities
Specialized tools and expertise for Western Digital drives
PC-3000 WD Module
Full WD firmware access to analyze ROM regions, detect corruption, and diagnose electronic issues without opening the drive. Non-invasive testing reveals whether failure is mechanical or firmware-related.
Head Stack Replacement
Precise head stack swaps using compatible donor assemblies in our cleanroom. WD's consistent mechanical design allows us to maintain inventory of compatible heads and actuator arms.
ROM & Firmware Analysis
Extract and analyze WD's ROM regions to verify firmware integrity and detect calibration issues. WD ROM issues are typically isolated to specific batches rather than systematic design flaws.
Ultrastar Helium Handling
WD's Ultrastar helium-sealed drives require specialized procedures. Dedicated protocols for helium drive disassembly, head replacement, and re-sealing to prevent pressure loss.
HGST Recovery Services
Western Digital acquired HGST in 2012. We provide expert recovery services for both brands with brand-specific expertise and tooling.
Learn about HGST RecoveryData Sources & Methodology
All reliability statistics on this page are derived from real-world data collected by Backblaze, a cloud storage company that monitors over 300,000 hard drives in their data centers. This is one of the largest publicly available datasets on drive reliability.
How AFR is Calculated
Annualized Failure Rate (AFR) = (Failures / Drive Days) × 365 × 100
A drive that operates for one day counts as one "drive day." If 1,000 drives operate for 365 days with 15 failures, the AFR is (15 / 365,000) × 365 × 100 = 1.5%. Lower AFR means better reliability.
Watch WD Recovery in Action
See how we diagnose and recover data from Western Digital drives. These long-form videos show the actual process.
WD Drive Not Powering On
Diagnosing and recovering data from a WD drive that won't power on.
WD Green Recovery (Part 1)
Head swap and imaging process on a failed WD Green drive.
WD Green Recovery (Part 2)
Continuation of the WD Green recovery with data extraction.
Recovery Pricing
WD's excellent reliability often means straightforward recovery when failures do occur. Free evaluation for all drives.
We operate on a strict No Data, No Charge policy. If we cannot recover your files, you pay nothing for the attempt.
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Free evaluation. WD's reliability often means straightforward recovery.