Backblaze, a data backup company, has published new material regarding the reliability of drives. This time again with an SSD and now with a lot of data.
For the first time, the experts of the source added SSD to the report in May. Then statistics showed that solid-state drives are much more reliable than conventional HDDs, but the average age of the former was much less than that of the latter. Because of this, it was impossible to draw a correct conclusion. Backblaze has taken this into account and has now provided more data.
First, let’s take a look at the general statistics.
You can see that HDDs fail about six times more often than SSDs. But here is the same problem: there is a huge difference in the age of the drives.
And here it has already been taken into account. The authors took statistics about their HDDs from five years ago, when the average age of hard drives corresponded to the average age of those currently used by Backblaze SSDs. And here the difference is several times less. It is still there, it cannot be attributed to an error, but it is completely uncritical, at least for ordinary users.
And this graph clearly shows how the reliability of the HDD changes with age. And the SSD graph is almost identical to the HDD graph for the same time period. True, this does not mean that in a few years, solid-state drives will begin to fail as often as HDDs do. So far, we can only say that the comparison of the reliability of HDD and SSD is not as straightforward as one might think.
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