These attributes are not a full picture of the health of a drive, but an expectation of how much usable life is left.īecause the attribute is vendor-defined, it can be complicated and confusing to figure out how each drive implements it. For percent lifetime remaining we would simply take (3000-100)/3000 = 96-97%. ![]() ![]() For example if your drive is rated for 3000 block erases and you have a total of 100, your Percentage Lifetime Used would be 100/3000, or 3-4%. Your Crucial SSD will keep track of this life with SMART attribute 173, “Average Block Erase Count.” The Lifetime Used is a reflection of the block erase count in terms of a percentage. A solid state drive, like any flash memory-based storage device, has a limited amount of data which can be written to the memory blocks before they start to lose their reliability, and eventually go into read only mode. ![]() In regards to the attribute named “Percentage Lifetime Used” (sometimes referred to as “Percent Lifetime Remaining”), this is simply a metric for how much wear life is left on your SSD. After some additional research, I came across this article that mentions the following:
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