Backblaze Q3 2025 Drive Stats Highlight High-Capacity Strength

Four fashions obtain zero failures throughout 328,000+ drives; new failure evaluation on outliers prompts dive into failure definitions

Backblaze, Inc. (Nasdaq: BLZE), the high-performance cloud storage platform for the AI period, at the moment launched its Q3 2025 Drive Stats report, analyzing the efficiency and reliability of 328,348 exhausting drives deployed throughout its international information facilities.

Since 2013, Backblaze has offered the trade’s most clear and broadly used dataset on exhausting drive reliability, providing insights to IT leaders, researchers, and information professionals worldwide. This newest installment continues that transparency whereas exploring a elementary query for contemporary infrastructure: What does it really imply for a tough drive to fail?

The quarterly failure fee elevated from 1.36% in Q2 to 1.55% in Q3, aligning with the 2024 annualized failure fee (AFR) of 1.57%. Four fashions recorded zero failures this quarter: Seagate HMS5C4040BLE640 (4TB), Seagate ST8000NM000A (8TB), Toshiba MG09ACA16TE (16TB), and the newly added Toshiba MG11ACA24TE (24TB).

Meanwhile, high-capacity drives (20TB+) grew by practically 8,000 models and now symbolize 21% of the energetic drive pool. The lifetime AFR stays regular at 1.31%, in keeping with the earlier two quarters.

This quarter’s report examines how Backblaze defines and detects drive failures throughout its infrastructure. Using a mixture of SMART monitoring, drive monitoring instruments, and automatic information enrichment, Backblaze distinguishes true mechanical failures from momentary removals. A drive is assessed as failed when it both seems in information heart work monitoring techniques or hasn’t re-entered the energetic inhabitants by quarter’s finish.

The outlier Toshiba MG08ACA16TEY (16TB) recorded an unusually excessive 16.95% AFR. An investigation revealed that the spike was attributable to one in all a number of ongoing upgrades. The mission required momentary drive removing and was not a results of mechanical points; nonetheless, due to the reporting interval and failure definitions, failures did present up within the present dataset. Backblaze expects the AFR to normalize in future studies.

“After greater than ten years and billions of drive days, we’ve constructed one of many largest collections of drive reliability information on the earth,” stated Gleb Budman, CEO of Backblaze. “This quarter, we’re going deeper—exhibiting precisely how we spot drive failures and turning that perception into one thing anybody can use.”

The full Q3 2025 Drive Stats report is publicly obtainable at www.backblaze.com/weblog/backblaze-drive-stats-for-q3-2025/. The Drive Stats dataset and different supporting supplies can be found at www.backblaze.com/drivestats/. Since 2013, Backblaze has invited the worldwide IT and information science communities to investigate, visualize, and study from its overtly obtainable reliability metrics because it continues to set the usual for cloud transparency.

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