No: the reported 60.8% does not mean that 60% of external hard drives fail within a year. It means that, in one recovery lab’s sample of drives that had already failed, 60.8% had logged less than a year of power-on time. That distinction matters: the figure describes selected failed drives, not the odds that a new drive will fail before its first birthday.
What does the 60.8% figure measure?
A September 2026 report by WindowsForum summarized a Secure Data Recovery analysis of 3,453 failed external hard disk drives (HDDs). The drives had been sent to that recovery lab between January 2023 and June 2026. Of those failed drives, 60.8% had recorded less than one year of power-on time.
Power-on time is the time a drive has been switched on, not necessarily the time since it was bought. A drive used occasionally can take much longer than a calendar year to accumulate a year of powered-on hours.
The sample included drives that had already failed and been submitted for professional recovery. The report says purely logical failures were excluded, as were some cases of severe platter damage that could make SMART readings unreliable. The lab’s cases can describe the failures it handled, but they are not a representative sample of every external drive in use. People seek recovery after failures, and the report cautions that early failures may be overrepresented.
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So the statistic does not establish the share of all external drives that fail in their first year, nor does it predict the lifespan of a particular drive. A valid failure probability would require a suitable population of operating drives and follow-up over time, not only a collection of failed units.
What else does the recovery-lab sample tell us?
WindowsForum reports a median of 4,559 power-on hours—about 190 days—and an average of 15,961 hours—about 665 days—for the failed drives in the sample. Those are operating-time measurements among failed cases, not estimates of how long a typical external HDD lasts.
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The reported brand counts were Western Digital 2,016, Seagate 802, Toshiba 333, Hitachi 184, and Samsung 118. These are counts among the lab’s incoming failed-drive cases, not failure rates. The report says the distribution largely reflects market share; it should not be used to rank brands by reliability.
Do other drive studies show how likely an external drive is to fail?
They provide useful context, but neither of the cited large-scale studies measures the failure probability of consumer portable external drives across brands and usage patterns.
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| Study | Population and measure | Finding | What it can—and cannot—show |
|---|---|---|---|
| Google/USENIX, 2007 | Google data-center drives; annualized failure rate by drive-age group. | 1.7% for drives in their first year; more than 8.6% in the three-year-old population. | These are data-center results, not portable consumer-drive rates. The authors note that different drive models were mixed across age groups, so the comparison is not a clean measure of age alone. |
| Backblaze, 2023 | Backblaze’s managed data-center fleet; annualized failure rates for specified drive cohorts. | 1.54% quarterly annualized failure rate in Q1 2023; 1.40% lifetime annualized failure rate. | These figures apply to Backblaze’s fleet and stated inclusion rules, not consumer portable external drives. Model and cohort limits affect interpretation. |
Backblaze excludes test drives and, for some analyses, models below a minimum drive count. It also notes that averages for models still in operation are incomplete because those drives have not finished failing. That is one reason a drive-failure figure needs its population, time period, and method alongside the number.
Can SMART data warn you that a drive is about to fail?
SMART (Self-Monitoring, Analysis and Reporting Technology) readings can be associated with higher failure probability in aggregate, but they are not a dependable countdown for an individual disk. The Google study found that many failed drives showed no SMART error signals. A clean SMART report therefore cannot guarantee that a drive is healthy or will keep working.
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- To get set up, connect the portable hard drive to a computer for automatic recognition no software required
- This USB drive provides plug and play simplicity with the included 18 inch USB 3.0 cable
- The available storage capacity may vary.
How should you protect files on an external drive?
Treat an external drive as one copy of your files, not the only copy. Keep another copy on a separate storage system. A second local device can help if the first drive fails; an off-site copy can also help when a problem affects the drive and its local backup together.
- Keep important files in at least two separate places rather than relying on a single external HDD.
- Use a separate storage system for the additional copy, and consider an off-site location for files you could not replace.
- Check that your copies open and that you can restore the files you need. A backup that cannot be read is not useful.
- If a drive appears to be physically failing and the files matter, avoid treating SMART status as reassurance; consider specialist assessment before attempting repeated recovery operations.
A portable external hard drive can be a practical local backup destination, but no single drive is failure-proof. An off-site backup may add protection from local risks, with trade-offs including recurring cost, restore time, storage capacity, and privacy. The cited studies do not establish a current, representative failure rate for consumer external HDDs, so they cannot tell you which individual drive is safest or how long yours will last.
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