What are you trying to cherry pick here? Nearly all the 2TB and 3TB drives were installed in Pod 2.0, yet of those 10 models only one of them hit above 10% first year failure rates. Only two models hit above the 7-8% three year failure rate. BOTH of the models were manufactured by Seagate. Now the 10% failure rate on the 2TB Seagate isn't too bad but the almost 30%?! failure rate on the 3TB Seagate is horrid. Now you'll scream about it being the Pod's fault, but if that were truly the case then you'd see growth year over year. I mean, if it's really vibration as the #1 source of the problem then failure rates should increase over time as the vibration induced failure chance increases over time and is coupled with the normal failure. If you analyze the data you'll see that most of the models follow that trend of a slow rise year over year for failure rates. However there are a few anomalies…..
This is not cherry picking – It is refusing to accept partial data as fact. If there is data split out among chassis revisions, where is it? Have you downloaded the data? I have. There is no indication of which drives are where in the data, and when company representatives responded to my questions they indicated there is no data on which pods the drives failed in.
We aren’t talking about normal vibrational stresses on these components that build up over time - this is almost catastrophic, which could explain the massive losses in the early stages of deployment. If the problem stems from placing the entire weight of the drive on the SATA connector, and then vibrating it, we would expect the devices that cannot sustain that type of ridiculous condition to fail very quickly.
This could be due to the method that the PCB is connected to the SATA port, etc, or different materials employed in the design. If one manufacturer has a more robust connector than another, that is great news, but it is irrelevant to an end user. There could even be variations between the same products, it would depend upon the manufacturing and materials, which for all we know could vary.
The SATA port is not designed to be the mount point for an HDD in any case, so if that is the source of even 5 failures they are irrelevant. Perhaps we should hit them hammers and add those drives to the list as well? At the very least, the base configuration and installation should be sufficient and fall within manufacturer guidelines to be considered as a point of comparison.
This article is coverage of the lawsuit. I employed one easy-to-understand example, and picture, that laypeople can understand easily. As the article states, this is one among many many concerns with the techniques employed by Backblaze. The article does not state that vibration is the only reason to be skeptical of the results, there are many. Vibration is just one of the likely sources of failure. In either case, your statements have done nothing to remove unnatural amounts of vibration as one of the likely culprits behind the failure rates.
It's really hard to argue the Pod as the source of all the problems when specific drives are the outliers. If more models failed as bad as the Seagates I'd be willing to buy the vibration theory. However, as another commenter pointed out the drives WITHOUT head parking features that protect against things like vibration and bumps actually performed the BEST in the study! Just further evidence the vibration theory is simply being pushed by Seagate fans or apologists in an attempt to disqualify the failure rates.
It is very easy to argue that the pod is a source of the problem. The company itself has stated, specifically, that its pod 3.0 has fewer failures than pod 2.0, specifically because of reduced vibration. That is their comment, not mine - they already stated the painfully obvious, but they cannot quantify it by releasing data that shows what the actual statistical impact was.
Also, drives from other manufacturers also failed well above the normal rate, which is why you will see every single vendor, even those that fared better than others, distancing themselves from these reports. There are no winners. I have inquired with the other companies in the tests when the reports first began, and none have anything to say. No Comment. Don’t you think that the “winners” would be happy to point out just how relevant the data is?
None do, because this is the some of the most technically inaccurate data one can gather short of hitting them with hammers.
Pins hold a physical position but they do NOT secure a drive against vibration. It's impossible because the pin has to be significantly smaller than the screw hole or you'd risk damaging the screw threads permanently and you have to allow for alignment errors of holes. In fact, because the pin is round there is a very very small point of contact that is round which means the pin design is going to magnify drive vibration. Sure that vibration won't affect the SATA connector but we've already disqualified that notion as the failure point because of the year over year failure rates.
Pins secure the SATA port from vibration, and also prevent the SATA port from bearing the weight of the drive, as stated in my post. I’m not sure of your point here.
Who is the “We” behind your statement in the last sentence here? Your statements have done nothing to remove the possibility that intense vibration is one factor behind these failures.
Do you know anything about electronics and individual components? Power cycling failure is common everywhere because electronics are more susceptible to surges of power than steady state operation.
I asked if you had read Backblaze’s opinion of the high rate of failure (that they assume is higher than normal, as everything in their environment is). I did not make a statement that power cycling does not adversely affect failure rates, but I did include a theory that can be magnifying the issue.
Another choice quote "Failure rates are known to be highly correlated with drive models, manufacturers and vintages. Our results do not contradict this fact." So yes, some drives are just worse than others, Backblaze was just the first to dime them out.
I agree that some drives are worse than others, and I don’t think anyone has claimed that they are all similar in failure rates. The crux of this argument is that there are so many factors in the flawed deployment, with some being so blatantly obvious as to be mind-numbing, that we should question the results.