Study Finds Almost 50% of Hard Drives Fail Way Too Soon

Secure Data Recovery analyzed more than 5000 failed HDDs: median operating time was 8687 hours (about 362 days), and 49.8% of drives failed in under a year. The sample includes only drives that already failed, so it does not reflect the real service life of a typical HDD.

• Median time to failure of failed HDDs was 8687 hours, under a fifth of expected life
• 49.8% of drives failed after less than a year of continuous operation
• Backblaze recorded an annual failure rate of 1.13% in 2025
• Each extra terabyte cuts failure risk by 3.4%; each degree above 20 °C raises it by 2.1%