This summary of the video was created by an AI. It might contain some inaccuracies.
00:00:00 – 00:15:46
The video delves into analyzing 200 GB of hard drive reliability data spanning 10 years, covering drives of 10 TB and above from Seagate, Western Digital, Toshiba, and HGST. The discussion centers around AFR (Annualized Failure Rate) and the varying reliability trends exhibited by different drive models. Specific models like the Seagate Exos X12 and various Toshiba drives are highlighted for their failure rates over time. Despite some issues, certain drive series like Seagate's x16 exhibit stable AFR below 1%. The Western Digital HC 530 and HC 550 Ultra Stars are also mentioned for their reliability, with some models showing gradually declining AFR. The x16 drive range is noted for its reasonable performance and cost-effectiveness, offering viewers insights for making informed drive selections.
00:00:00
In this segment of the video, the speaker discusses analyzing 200 gigs of Drive reliability data from back blaze covering 350,000 hard drives over a 10-year period. The data contains 410 million rows and 1.2 billion data points. The focus is on AFR analysis for larger capacity drives of 10 terabytes and above, comparing models from Seagate, Western Digital, Toshiba, and HGST. The speaker highlights the bathtub curve, explaining early failures, random failures, and wear-out failures in disc drives. Different models exhibit varying failure trends, influencing the drive’s reliability.
00:03:00
In this part of the video, the speaker discusses the concept of AFR (Annualized Failure Rate), which represents the percentage chance that a drive will fail in one year. They highlight that AFR is based on averages and is not a deterministic value, with manufacturers quoting fixed AFR numbers that may change over time. The speaker explains how they calculated failures based on cumulative data to provide a smoother curve showing how AFR develops over the life of a drive. The video segment also introduces different drive models from HGST, Seagate, Toshiba, and Western Digital, each with varying capacities and features, totaling a significant number of units for analysis.
00:06:00
In this segment of the video, the presenter discusses different enterprise-class drives from manufacturers like Western Digital, HGST, Seagate, and Toshiba. They analyze failure rates based on drive age and power on hours, noting that drives failing earlier than the 5-year warranty period may be a concern. They specifically mention the HGST Ultrastar HC 520 and Seagate Exos X12 drives experiencing increasing failure rates. The Seagate Exos X12 NM7 model had high failure rates and was mostly decommissioned in 2020 due to known issues, with remaining drives showing consistent 2% AFR. Overall, the Seagate drives have relatively long average lifespans despite the high AFR on some models.
00:09:00
In this segment, it discusses the failure rates of various Seagate and Toshiba hard drive models. The x16 series of Seagate drives generally have below 1% AFR, which is acceptable. However, the x14 version of the 14TB disk has a rapidly climbing AFR of nearly 6% after 2.5 years. Specific Seagate models have had issues, but overall, the x16 series has shown improvement. The Toshiba 14TB M G07 series TA variant initially has a higher failure rate but falls below 1% AFR and remains stable. On the other hand, the Tey variant has a high initial failure rate, and even after 2.5 years, it has not dropped below 1% AFR. The 16TB TA 4kn unit has a high initial AFR but quickly falls below 1% and maintains consistency. Overall, Toshiba drives have a higher early failure rate but tend to stabilize below 1% AFR after some time.
00:12:00
In this segment of the video, the presenter discusses the reliability of WD branded versions of HC 530 and HC550 Ultra Stars. The 14 TB 6L4 model starts with 2% AFR but falls to 0.5 and settles at 0.33% over time. The 16 TB Unix 6L0 model starts at 2.4% AFR and settles at 0.13% AFR. The 6L4 variant with a larger deploy base of 14,000 units settles at 3% AFR. The new large capacity Enterprise drives from WD are impressive in terms of reliability. The presenter emphasizes the need to monitor their reliability over time. Feedback on the analysis is welcomed. The reliability of Toshiba drives and Seagate drives is also briefly discussed.
00:15:00
In this segment of the video, it is discussed that despite the availability of the x24 range, there are hopes for improvements to make them competitive with WC. The x16 range shows reasonable performance with around 1% failure rate. The x16 drives have many units over 2-3 years old. While they may not be the most reliable, they are often cheaper than competitors, which influences model selection. This information aims to assist viewers in making informed drive selections.