CSI: Backblaze – Dissecting 3TB Drive Failure

Backblaze Blog: Dissecting 3TB Hard Drive Failure

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 4 years. As of March 31, 2015, just 10% of the Seagate 3TB drives deployed in 2012 are still in service. This is the….

Backblaze Vaults: Zettabyte-Scale Cloud Storage Architecture

Backblaze Cloud Storage

We are thrilled to share the results of a project that has engaged the Backblaze engineering team for the last year: Backblaze Vaults, a major step forward in our cloud storage service’s technology stack. Currently Backblaze stores over 150 petabytes of data and has recovered over 10 billion files for customers of our cloud backup….

150 Petabytes of Cloud Storage

150 Petabytes for Backblaze

Backblaze now has 150 Petabytes of customer data safely stored by our cloud backup service and waiting to be restored by our customers when requested. This customer data is stored encrypted on 980 Backblaze Storage Pods which contain 44,100 data hard drives of sizes ranging from 2 to 6 Terabytes. Each week, new Storage Pods….

Storage Pod 4.5 – Tweaking a Proven Design

Storage Pod 4.5

It has been nearly a year since we published an update to our Storage Pod design. Over the last few months we have been deploying Storage Pod 4.5, which is known internally as Storage Pod Classic. The reason for the “classic” nickname comes from the fact that Storage Pod 4.5 is derived from our Storage….

What is the Best Hard Drive?

blog-which-drive

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…..

Our 6 TB Hard Drive Face-Off

blog-6tb-drive-compare

Backblaze is transitioning from using 4 TB hard drives to 6 TB hard drives in the Storage Pods we will be deploying over the coming months. With over 10,000 hard drives needing to be purchased over the next several months, the choice of which 6TB hard drive to use is critical. Let’s take a look….

Hard Drive SMART Stats

blog_smart-stats

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….