The other drives failed at between 700 and 900 TBW. Among six brands of SSDs tested, only the Kingston, Samsung, and Corsair high-end drives managed to survive after writing over 1000 terabytes of data (one petabyte). The Tech Report’s study on longevity between major brands. Older SSDs are more prone to total failure regardless of TBW or DWPD.
Conclusion: in a high-stress, fast-read environment, SSDs will last longer than hard drives, but be more susceptible to non-catastrophic data errors. But it wasn’t all positive in favor of SSDs: they experienced higher uncorrectable errors and bad blocks at a much higher rate than hard drives over the four-year testing period. It also determined that SSD drives were replaced at Google data centers far less often than conventional hard drives, at about a one to four ratio. The study concluded that the physical age of the SSD, rather than the amount or frequency of data written, is the prime determiner in probability of data retention errors. A few of the more well-known ones include:Ī joint study between Google and the University of Toronto covering drive failure rates on data servers. There have been several recent studies trying to determine a more precise lifespan for solid state memory. With that in mind, let’s answer this question. The total amount of data written and re-written to a drive over its lifetime, expressed in terabytes. A “bad block” is inaccessible or poorly accessible to your computer, causing a lower-than-reported level of available storage and potential read and write errors for files and software. Memory Block: a portion of the physical memory on a flash drive.Single-Level Cell memory in enterprise and enthusiast-grade SSDs is faster and technically less prone to data loss. MLC and SLC: Multi-Level Cell memory is cheaper and slower, generally found on consumer-grade SSD drives.That means that you’re no more likely to lose data with an all-flash setup versus a standard hard drive…but that it’s still essential to keep a data backup of important files.īefore we go on to some of the testing, it’s important to get a quick primer on some of the more technical terms associated with SSDs: The bad news is that SSDs tend to fail more often with age, and not with extended data reading and writing, as formerly predicted. The good news is that SSDs are probably much more reliable than you think, and certainly at least as good as hard drives in terms of data retention and failure rates. Tech fans had a pretty good idea of the general reliability of hard drives, but SSDs were still something of a wild card.īut years later, the market for SSDs has matured considerably, and we’ve got a lot more data on…well, data. When large-scale flash storage first came to the consumer market as an alternative to conventional hard drives, the biggest concern (aside from price) was longevity.
0 kommentar(er)
