Backblaze Open Sources Reed-Solomon Erasure Coding Source Code

By | June 16th, 2015

At Backblaze we have built an extremely cost-effective storage system that enables us to offer a great price on our online backup service. Along the path to building our storage system, we have used time-tested technologies off the shelf, but we have also built in-house technologies ourselves when things weren’t available, or when the price….

Backblaze Vaults: Zettabyte-Scale Cloud Storage Architecture

By | March 11th, 2015

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….

What is the Best Hard Drive?

By | January 21st, 2015

Check out the latest Hard Drive Stats. 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….

Hard Drive SMART Stats

By | November 12th, 2014

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….

Hard Drive Reliability Update – Sep 2014

By | September 23rd, 2014

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 covered the reliability of each….

Hard Drive Temperature – Does It Matter?

By | May 12th, 2014

How much does operating temperature affect the failure rates of disk drives? Not much. The unlimited online backup service provided by Backblaze requires a lot of storage. In fact, we recently passed the 100-petabyte mark in our data center. This means we use disk drives. A lot of disk drives. The Backblaze Storage Pod is….

What Hard Drive Should I Buy?

By | January 21st, 2014

My last two blog posts were about expected drive lifetimes and drive reliability. These posts were an outgrowth of the careful work that we’ve done at Backblaze to find the most cost-effective disk drives. Running a truly unlimited online backup service for only $5 per month means our cloud storage needs to be very efficient….