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Backblaze Drive Stats for 2022 January 31, 2023 byAndy Klein // 36 Comments As of December 31, 2022, we had 235,608 drives under management. Of that number, there were 4,299 boot drives and 231,309 data drives. This report will focus on our data drives. We’ll review the hard drive failure rates for 2022, compare those rates to previous years, and present the lifetime failure statistics for all the

What’s the Diff: Full, Incremental, Differential, and Synthetic Full Backups March 7, 2022 byKari Rivas // 5 Comments If you made your way here to the Backblaze blog, you probably understand the value of backing up your data. Data disasters, like ransomware attacks, floods, and fires, can easily cost a business thousands of dollars in recovery expenses. But whether you’re an IT professional or a s

The SSD Edition: 2021 Drive Stats Review March 3, 2022 byAndy Klein // 51 Comments Welcome to the first SSD edition of the Backblaze Drive Stats report. This edition will focus exclusively on our SSDs as opposed to our quarterly and annual Drive Stats reports which, until last year, focused exclusively on HDDs. Initially we expect to publish the SSD edition twice a year, although that could change

Backblaze Hard Drive Stats for 2020 January 26, 2021 byAndy Klein // 34 Comments In 2020, Backblaze added 39,792 hard drives and as of December 31, 2020 we had 165,530 drives under management. Of that number, there were 3,000 boot drives and 162,530 data drives. We will discuss the boot drives later in this report, but first we’ll focus on the hard drive failure rates for the data drive models in

Backblaze Hard Drive Stats Q1 2020 May 12, 2020 byAndy Klein // 40 Comments As of March 31, 2020, Backblaze had 132,339 spinning hard drives in our cloud storage ecosystem spread across four data centers. Of that number, there were 2,380 boot drives and 129,959 data drives. This review looks at the Q1 2020 and lifetime hard drive failure rates of the data drive models currently in operation in our

Backblaze Hard Drive Stats for 2017 February 1, 2018 byAndy Klein // 83 Comments For the most recent Hard Drive Reliability Statistics, as well as the raw hard drive test data, visit Hard Drive Data and Stats. Beginning in April 2013, Backblaze has recorded and saved daily hard drive statistics from the drives in our data centers. Each entry consists of the date, manufacturer, model, serial number

Backblaze Hard Drive Stats for 2016 January 31, 2017 byAndy Klein // 186 Comments For the most recent hard drive reliability statistics, as well as the raw hard drive test data, visit the Hard Drive Data and Stats webpage. Backblaze has recorded and saved daily hard drive statistics from the drives in our data centers since April 2013. At the end of 2016 we had 73,653 spinning hard drives. Of that

When the RAW value for one of these five attributes is greater than zero, we have a reason to investigate. We also monitor RAID array status, Backblaze Vault array status and other Backblaze internal logs to identify potential drive problems. These tools generally only report exceptions, so on any given day the number of investigations is manageable even though we have nearly 70,000 drives. Let’s

For the most recent hard drive reliability statistics, as well as the raw hard drive test data, visit Hard Drive Data and Stats. Q2 2016 saw Backblaze introduce 8TB drives into our drive mix, kick off a Pod to Vault migration of over 6.5PB of data, cross over 250 petabytes of data stored, and deploy another 7,290 drives into the data center for a total of 68,813 spinning hard drives under manageme

One Billion Drive Hours and Counting: Q1 2016 Hard Drive Stats May 17, 2016 byAndy Klein // 137 Comments For the most recent hard drive reliability statistics, as well as the raw hard drive test data, visit the Hard Drive Data and Stats page. For Q1 2016 we are reporting on 61,590 operational hard drives used to store encrypted customer data in our data center. There are 9.5% more hard drives in t

What Can 49,056 Hard Drives Tell Us? Hard Drive Reliability Stats for Q3 2015 October 14, 2015 byAndy Klein // 142 Comments For the most recent hard drive reliability statistics, as well as the raw hard drive test data, visit Hard Drive Data and Stats. As of the end of Q3 2015, there were 50,228 drives spinning in the Backblaze data center. Subtracting boot drives, drive models with less than 45 d

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Don’t Build a Billion-Dollar Business. Really. September 3, 2015 byGleb Budman // 5 Comments The better goal? Keep your head down, make a great product, and build a successful business. Silicon Valley prays at the altar of the billion-dollar business. And for good reason: These companies define industries, give the founders so-called “F-you money,” and provide VCs with a return that can counterbal

Hard Drive Reliability Stats for Q2 2015 July 28, 2015 byAndy Klein // 137 Comments For the most recent hard drive reliability statistics, as well as the raw hard drive test data, visit Hard Drive Data and Stats. Each quarter, Backblaze updates our hard drive statistics with the latest data. As of the end of Q2 2015, there were 47,561 drives spinning in our data center. Subtracting out boot drives

CSI: Backblaze—Dissecting 3TB Drive Failure April 15, 2015 byAndy Klein // 146 Comments Beginning in January 2012, Backblaze deployed 4,829 Seagate 3TB hard drives, model ST3000DM001, into Backblaze Storage Pods. In our experience, 80% of the hard drives we deploy will function at least four years. As of March 31, 2015, just 10% of the Seagate 3TB drives deployed in 2012 are still in service. This

A lot has changed since the 3-2-1 backup rule was first introduced in the late aughts. At the time, the iPad was just a glimmer in Apple’s eye. Facebook had a quaint 500 million users. Taylor Swift had only released two albums. Blockbuster Video still existed, and Netflix shipped DVDs to your door. Unlike most things in technology, the rule has held up over the years. It’s still the de facto stand

Reliability Data Set for 41,000 Hard Drives Now Open-source February 4, 2015 byBrian Beach // 34 Comments Stats geeks: Now it’s your turn. Backblaze has released the raw data collected from the more than 41,000 disk drives in our data center. To the best of our knowledge, this is the largest data set on disk drive performance ever to be made available publicly. Over the past 16 months, I have been

What Is the Best Hard Drive? January 21, 2015 byBrian Beach // 173 Comments It was one year ago that I first blogged about the failure rates of specific models of hard drives, so now is a good time for an update. At Backblaze, as of December 31, 2014, we had 41,213 disk drives spinning in our data center, storing all of the data for our unlimited backup service. That is up from 27,134 at the end o

I’ve shared a lot of Backblaze data about hard drive failure statistics. While our system handles a drive failing, we prefer to predict drive failures, and use the hard drives’ built-in SMART metrics to help. The dirty industry secret? SMART stats are inconsistent from hard drive to hard drive. With nearly 40,000 hard drives and over 100,000,000GB of data stored for customers, we have a lot of har

For the most recent hard drive reliability statistics, as well as the raw hard drive test data, visit Hard Drive Data and Stats. At Backblaze we now have 34,881 drives and store over 100 petabytes of data. We continually track how our disk drives are doing, which ones are reliable, and which ones need to be replaced. I did a blog post back in January, called “What Hard Drive Should I Buy?” It cove