An experiment has shown that SSDs cause fewer errors than hard drives because they have no moving parts. It has been tested with the servers of several thousand data centers.
The Blackblaze company has published a study showing that SSDs have a much lower failure rate than traditional hard drives. This data was taken from the company's thousands of data centers over the past few years.
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An SSD fails twenty times less than a hard drive
Blackblaze has been analyzing the efficiency of its hard drives for years and has detailed charts of which hard drives from the WDC, Toshiba, Seagate and HGST brands have the best scores and which are most prone to failure. But this is the first time that Blackblaze has also started looking at SSD efficiency.
They warn us that the average age of the SSDs that Backblaze uses is only 12,7 months, while the average age of its hard drives is 4 times older, 49,6 months. Also, SSDs are used as boot drives in your servers, so these SSDs could also have less workload compared to real hard drives where they are constantly used for backing up customer data.
Counting the annual failure rates of Blackblaze units; All of the company's hard drives had a 10,56% error rate, while all SSDs had just 0,58% in failure rates. This is roughly a twenty times lower error rate on SSDs.
Most notable are the 16TB Toshiba, Seagate and WDC drives which have so far not posted any losses. Some of HGST's 12TB and 4TB models also post extremely low losses of just 0.33% on average. This lower failure rate can be attributed to the fact that SSDs do not have moving parts unlike hard drives, which means that in addition to consuming less energy, they deteriorate less with use and have fewer parts that can fail.
Source: Tom's Hardware
