SSD OR HDD, WHICH IS MORE RELIABLE? THIS IS ACCORDING TO THE BACKBLAZE STUDY
A study conducted by Backblaze states that SSDs are more reliable 21 times that of HDDs.
By the time a new SSD appeared, about 11 years ago, this storage device was considered unreliable. The SSD may suddenly malfunction, causing irrevocable data corruption. Computer users of that era usually had a backup HDD to create disk images from their SSDs. Microsoft even added disk imaging features to the Windows 7 OS.
Unlike now, SSDs have evolved. It has faster data reading and writing speed than HDDs, is more compact, has no moving parts, is immune to magnetic fields, and can withstand slams and vibrations better than HDDs. Therefore, SSDs have strong durability as well as a more extended warranty than HDDs.
So, which is more reliable, SSD or HDD? To help answer that question, a backup cloud provider called Backblaze provides some interesting statistics about storage device malfunctions.
According to Backblaze, in the first quarter of 2021, the average failure rate (AFR) of all HDD brands stood at 10.56%. And at the same time, they recorded the AFR of the SSD as only 0.58%. The HDD that malfunctions about 1 in 10 compared to SSDs that are only 1 out of 200.
Backblaze also provides damage level reports from April 20, 2013, to March 3, 2021. Backblaze malfunctioned on 559 HDDs during those eight years, and only 8 SSDs made the AFR HDD figure at 6.04% and 0.65% for SSDs. The high rate of HDD damage is caused because they have moving parts, whereas SSDs do not.
These figures show that SSDs are more reliable than HDDs. But according to Backblaze, there is one factor that affects durability, namely the life of the device. The average age of SSDs recorded in the report is only 12.7 months, while the HDD age reaches 49.6 months. The age of the oldest SSD that Backblaze has is about 30 months. As well as the youngest HDD is 24 months old, and the oldest is 96 months or eight years old.
In conclusion, SSDs are more reliable than HDDs for now. But it will take more time and statistics to realize a more accurate comparison. Backblaze stated that it would continue to examine the malfunctions that occurred and publish the results in the coming month.
On the other hand, laptop manufacturers also began using SSDs for their product storage media. They do this to pursue a thin, lightweight laptop, like Lenovo, which launched two of its newest products that support NVME SSDs up to 2 TB.