Worried about SSD durability? A recently finished experiment will help you rest easy

samsung introduces its own 256gbit 48 layer nand chip solid state drive
A year and a half ago PC enthusiast publication The Tech Report embarked on a complex experiment to answer a simple question; how long will solid state drives last? While manufacturer specifications suggested they should be good for a decade or more in a typical home PC, there was no casual way to verify that. Drives that fail sooner than expected could suddenly leave thousands of users without their data.

To reach an answer more quick The Tech Report rounded up a number of SSDs and subjected them to continual write cycles, with the goal of killing each drive as quickly as possible. There was some expectation, given the manufacturer quoted durability of the drives, that the first could go belly-up in months.

That’s not what happened. The least durable drive, a Samsung 840, started registering errors at about 200TB of written data, but it hung on until the 900TB mark. The most durable drive was a Samsung 840 Pro, which managed over 2.4 petabytes of writes, or 18 months of continual, absolutely constant use.

All of the drives far exceeded the needs of an average home user. The weakest drive, the Samsung 840, was a 250GB drive, so the data written to it during the test was over 30 times more than the drive can handle at any one time. Obviously most users, even those in heavy-use enterprise environments, don’t fill a drive to its capacity, empty it, and then re-fill it time and time and time again.

The results of the experiment are pretty clear; solid-state drives are durable enough. Even affordable models can handle many years, and possibly decades, of use in a home desktop without running into errors related to wear on an SSD’s flash storage. In all likelihood a drive will succumb to some other problem, or simply be tossed as obsolete, before the flash chips inside go south. We’ve long recommended SSDs as an upgrade for users still stuck with a mechanical disk, and these results only bolster that argument.


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