Five-year observations confirmed that SSD is much more reliable than HDD

Five-year observations confirmed that SSD is much more reliable than HDD

The Backblaze cloud back-up service published a report for the second quarter of 2022 showing the level of reliability of solid storage devices compared to conventional HDD when used as loading disks in its servers. The data have been collected since 2018, and based on a five-year analysis, the company concluded that SSD is more reliable than hard drives.

Backblaze began to collect SSD life-cycle statistics from the time it began to upgrade its back-up data servers to replace conventional HDDs. The company took five years to obtain any significant difference in the number of failures between hard drives and hard disks of the same age.

In the first year of service, 0.66% of HDDs and none of SSDs failed. In the second year, the proportion of hard disks out of service increased to 1.54% and that of SSD to 0.85%. In the third year of observation, an additional 1.38% of hard disks and 0.79% of hard drives went out of service. In the fourth year, the company received 1.83% of failed HDDs and 1.05% of broken SSDs. In the fifth year of operation, the number of hard disks out of service increased to 3.55%, while in the opposite year, the SSD went down to 0.92%.

It is interesting that, according to BackBlaze data, the probability of SSD failing at its age does not increase very much. However, it must be understood that the model for the use of disks as downloads does not imply the recording of large amounts of data on them, so the study does not take into account the wear of flashbacks due to multiple erasing-recording cycles.

As a result, the greater reliability of the SSD is due to the lack of moving parts. However, the risk of premature failure of solid storage is still high due to excessive recording operations, the use of fault patches, and industrial marriage. However, the Backblaze statistics show that very few users are at risk of doing so.

," noted in Backblaze.