Hard Disk Error Rate
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Most Reliable Hard Drive 2016
data. $5/month. And you can try it for free today. Hard Drive Reliability Review for 2015 February 16th, 2016
Hgst Hard Drives
By the end of 2015, the Backblaze datacenter had 56,224 spinning hard drives containing customer data. These hard drives reside in 1,249 Backblaze Storage Pods. By comparison 2015 began with 39,690
External Hard Drive Failure Rates
drives running in 882 Storage Pods. We added 65 Petabytes of storage in 2015 give or take a Petabyte or two. Not only was 2015 a year of growth, it was also a year of drive upgrades and replacements. Let's start with the current state of the hard drives in our datacenter as of the end of 2015 and then dig into the hgst external hard drive rest later on. Hard Drive Statistics for 2015 The table below contains the statistics for the 18 different models of hard drives in our datacenter as of 31 December 2015. These are the hard drives used in our Storage Pods to store customer data. The Failure Rates and Confidence Intervals are cumulative from Q2 2013 through Q4 2015. The Drive Count is the number of drives reporting as operational on 31 December 2015. During 2015, five drive models were retired and removed from service. These are listed below. The Cumulative Failure Rate is based on data from Q2 2013 through the date when the last drive was removed from service. Note that drives retired and removed from service are not marked as "failed" they just stop accumulating drive-hours when they are removed. Computing Drive Failure Rates This is a good point to review how we compute our drive failure rates. There are two different ways to do this, either works. For the first way, there are four things required: A defined group to observe, in our case a group of drives, usually by model, a period of
Backing Up | Backblaze Bits Be the first to know! Subscribe today to receive Backblaze blog post emails automatically! This field is required Join No Spam. Unsubscribe any time. Follow us: hms5c4040ble640 Cloud backup. Mac or PC. Unlimited data. $5/month. And you can try it for hds5c3030ala630 free today. Hard Drive Reliability Stats for Q2 2015 July 28th, 2015 Check out the latest Hard Drive Stats. Each quarter, backblaze hard drive reliability 2016 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 datacenter. Subtracting out boot drives, drive models with less than 45 https://www.backblaze.com/blog/hard-drive-reliability-q4-2015/ drives and drives in testing systems, we are publishing data on 46,038 hard drives spread across 21 different models, from 1.5TB to 8.0TB in size. All the hard drives in this review are used in the production systems in our datacenter. The environment is climate controlled and all drives are individually monitored. Each day we pull the available SMART stats reported by each and every drive. These stats are https://www.backblaze.com/blog/hard-drive-reliability-stats-for-q2-2015/ available for download from our Hard Drive Data web page. There are two SMART stats of particular interest for most folks: hours in operation and drive temperature. The SMART 9 attribute allows us to compute the age of the drive, and the SMART 194 attribute allows us to determine that all drives are within their acceptable temperature range. Downloading the data will enable you to examine the SMART stats for every drive we used in this review. Hard Drive Failure Rates We’ll start by comparing the hard drive reliability stats for the January-June 2015 period with the stats from 2014: Trends in Hard Drive Failure Rates The following table presents the cumulative Hard Drive reliability stats over time. This table can provide insights into failure rate trends as the drive population ages: What Is A Failed Hard Drive? For Backblaze there are three reasons a drive is considered to have “failed”: The drive will not spin up or connect to the OS. The drive will not sync, or stay synced, in a RAID Array (see note below). The Smart Stats we use show values above our thresholds. Note: Backblaze Vaults do not use RAID. Instead, we use our open-sourced implementation of Reed-Solomon encoding to replace the functio
Selecting a Disk Drive: How Not to Do Research Posted January 28, 2014 By Henry Newman Send Email » More Articles » I wasn’t impressed last week when I saw Brian Beach’s blog on what disk drive to buy. http://www.enterprisestorageforum.com/storage-hardware/selecting-a-disk-drive-how-not-to-do-research-1.html I wasn’t impressed due to the lack of intellectual rigor in the analysis of the data he presented. In my opinion, clearly Beach has something else going on or lacks understanding of how disk drives and the disk drive market work. Let me preface this article with the following full disclosure: I own no stock in Seagate, WD, or Toshiba, nor do I have family or close hard drive friends working at any of those companies. I do not buy disk storage, as in my consulting role I am not allowed to resell hardware or software by agreement. I do know people in two of the three companies and have for years, but I have not been given free stuff nor would I take it. Basically, the only agenda I have is a comprehensive factual analysis, which hard drive failure in my opinion is lacking in Beach’s blog post. Let’s start at the second table in Beach’s article. I have added a few columns in green that were not part of the original, but the information in these columns can be found on the web with a bit of work, and as you will see are pretty important. Post a comment Email Article Print Article Share Articles Digg DZone Reddit Slashdot StumbleUpon del.icio.us Facebook FriendFeed Furl Let’s talk about the release data first. The oldest drive in the list is the Seagate Barracuda 1.5 TB drive from 2006. A drive that is almost 8 years old! Since it is well known in study after study that disk drives last about 5 years and no other drive is that old, I find it pretty disingenuous to leave out that information. Add to this that the Seagate 1.5 TB has a well-known problem that Seagate publicly admitted to, it is no surprise that these old drives are failing. Now for the other end of the spectrum, new drives. Everyone knows that new drives have infant mortality issues. Drive vendors talk about it, the industry talks about it, RAID vendors talk about it, but