BackBlaze regularly posts failure rates for their substantial collection of hard drives, and according to the results
they published last month, they have over 100,000 of them to test. But as we've recently noted
, flash memory prices are dropping like a rock, hence solid state drives are quickly becoming a somewhat economical alternative to 7200 RPM spinners.
But just how reliable are these drives? According to a recent blog post, BackBlaze thinks that SSDs
are "generally" more reliable than HDDs under most workloads, though the factors that affect SSD reliability are different. As their name would suggest, SSDs have no moving parts, hence they're more tolerant to shock, vibration, and temperature changes, but that also means that users get no audible indicators when they do start failing. Flash memory can eventually wear out too, and it can wear out relatively quickly in QLC SSDs, but Backblaze says "SSDs can be expected to last as long or longer than HDDs in most general applications." Unfortunately, the backup company isn't backing up their claims with hard data yet, but other publications have torture tested
SSDs before, and I expect it won't be long before Backblaze starts posting SSD failure rates as well. Thanks to AceGoober for the tip.
Posted by alphaatlas
10:45 AM (CST)
SSDs are a different breed of animal than a HDD and they have their strengths and weaknesses relative to other storage media. The good news is that their strengths -speed, durability, size, power consumption, etc. - are backed by pretty good overall reliability. SSD users are far more likely to replace their storage drive because they're ready to upgrade to a newer technology, higher capacity, or faster drive, than having to replace the drive due to a short lifespan. Under normal use we can expect an SSD to last years. If you replace your computer every three years, as most users do, then you probably needn't worry about whether your SSD will last as long as your computer. What's important is whether the SSD will be sufficiently reliable that you won't lose your data during its lifetime.