How many hard drives fail every day?

What a hard drive failure actually costs you - in data and money

Professional data recovery from a failed hard drive costs $300 to $1,500, depending on the failure type and how fast you need it. Full recovery is not guaranteed at any price. Photos, work documents, and financial records are not replaceable by money, even if the drive's replacement cost is under $100.

Most people believe their data is safe until it is not. Backblaze's fleet AFR sits around 1–2% a year (1.41% lifetime, 1.73% in the Q2 2026 quarter), and consumer drives in desktops and external enclosures typically land closer to 1–3%. Failure rates climb after year 3–4. A drive that has been running for four years without a recent backup has a meaningful, measurable chance of failing before the next one.

The 3-2-1 rule is the standard recommendation: 3 copies of your data, on 2 different media types, with 1 copy off-site or in the cloud. Most people have zero backups. AnythingCounter counts every drive that failed globally today; most of those owners had no copy of what was on it.

Hard drive reliability by the numbers: 81 million failures per year

Drive failures today vs. e-waste generated today

Every failed drive becomes e-waste. The 62 million tonnes discarded globally each year includes tens of millions of dead drives, most of which still contain recoverable data and valuable metals, and most of which get neither back.

Annual hard drive failure rates: Backblaze data 2013-2026

Hard drive annual failure rates typically run between 1% and 5% depending on age and model, with drives older than 3 years failing at roughly 3× the rate of newer ones. Global HDD shipments of ~170 million units per year imply millions of failures annually, making drive death a constant, quantifiable drain on storage infrastructure.

Hard drive death: how 2.6 drive failures per second shape global data

From IBM's 5MB disk to modern SSDs: HDD history

1. 1956First HDD shipped: IBM RAMAC 350, 5MB, the size of two refrigerators
2. 1992HDD capacities reach 1GB; desktop PC storage becomes feasible
3. 2013Backblaze begins publishing public drive failure statistics; transparency forces reliability improvements
4. 2020Backblaze: fleet AFR drops to 0.93% in 2020 (2013 study: 5.1% for drives in their first 18 months)
5. 2025Backblaze 2025 Year-End (Feb 2026): annual AFR 1.36% across 344,196 drives (lowest since 2022), Q4 2025 AFR 1.13%; first 26 TB drive (WDC WUH722626ALE6L4) enters service
6. 2026Backblaze Q1 2026 Drive Stats: quarterly AFR falls further to 1.24%
7. 2026Backblaze Q2 2026 (29 Sep): quarterly AFR jumps to 1.73% as older, smaller models drag the fleet; lifetime AFR edges up to 1.41%

In perspective

Frequently asked questions

How often do hard drives fail?

Backblaze's lifetime AFR is 1.41% as of Q2 2026, and the Q2 quarter alone came in at 1.73%, up from 1.24% in Q1. Those are enterprise drives in data centers. Consumer drives in desktop PCs, laptops, and external enclosures run higher, typically 1-3%, with significant variation by manufacturer, model, and age. Drives in the 3-5 year range show accelerating failure rates.

How many hard drives are there globally?

IDC estimates approximately 3-4 billion HDDs are in active use worldwide, across data center storage, enterprise servers, desktop PCs, laptops, external drives, and surveillance systems. Annual HDD shipments have been falling as SSDs take the laptop and consumer PC market, but the total installed base shrinks slowly.

What happens when a hard drive fails?

Data recovery specialists can retrieve data from many failed drives, but it costs $300-$2,000 or more and is not guaranteed. Enterprise operators with RAID redundancy absorb failures without data loss. For unprepared consumers, a drive failure is the most common route to permanent, unrecoverable data loss. Only about 35-40% of consumers back up regularly.