Will my SSD die once Wear Leveling Count on SMART reaches 99?

[yggdrasilsys]

I have a Samsung 840 EVO and the Wear Leveling Count is listed as 2 already. It has a threshold level of 99.
I am not too technical, but does that mean I will need to replace my SSD once it reaches 99? I've read somewhere that the actual number is actually around 3000 but I also read from another place that 99 is the final number.

What happens when my SSD reaches 99 Wear Leveling Count?
Here is also a uploaded picture.
http://puu.sh/9slre/1e1f85f9c5.png

 

[Suztera]

Here is what all the data means: http://www.samsung.com/global/business/semiconductor/minisite/SSD/us/html/about/whitepaper07.html

ID # 177 Wear Leveling Count

This attribute represents the number of media program and erase operations (the number of times a block has been erased). This value is directly related to the lifetime of the SSD. The raw value of this attribute shows the total count of P/E Cycles.

I believe this is what you looking for:

Source:http://www.anandtech.com/show/6459/samsung-ssd-840-testing-the-endurance-of-tlc-nand

 

[yggdrasilsys]

I am sorry but I do not understand that at all
Can you dumb it down for me? I am terrible at technology

 

[Suztera]

P/E cycles stands for program/erase cycles.

Say you got a 16GB USB stick. You then put a 16GB file or video on that USB and then you delete it. You will trigger the Trim command and the file/vidoe is removed from the USB. You have then done 1 P/E cycle.
So for a 120GB SSD. 1 P/E cycles equates to roughly 120GB been written which reduce the SSD lifespan.
It is said that TLC 3 bit cell has roughly 1000 P/E cycle for its lifespan so for a 120GB that would be 120,000GB been written to exhaust the SSD.

 

[yggdrasilsys]

So I guess for my 250 GB it would need about 250,000GB

For the Wear Leveling Count, so it's all mathematically done so that 99 = 250,000 GB?

 

[Suztera]

Yes give or take with some GB been wasted. You can never have 100% efficiency when writing. There are also some losses so you may write a bit more than intended.
I would say it is mathematically done for us the consumer. I think it is the dumb-down version and there are other things which manufacturer use to measure.

 

[Hard Line]

well I am not sure i agree with the numbering.. reason being according to wear leveling I am at -21% life left on my crucial C300 ( i know it has more P/E cycles..) but it's still going long after it was supposed to die ( even bought a 240gb m500 to replace it when it does...) actually I had a rogue process writing insane amts of data daily 50-180GB/day until i caught it.. yet it mysteriously still lives .

 

[TyrOd]

Rated P/E Cycles has little to no impact on the actual reliability and expected average lifespan of an SSD.
Most SSD's will not last anywhere near their rated P/E cycles, though some will last longer due to the variability in binning and controller stability.

 

[k1114]

0 is when you should think about replacing it, not when it's going to die. The article even says this. It's still got 20-30% left afterwards. Smart's purpose is to warn before the storage device dies. Threshold is when you get a warning so needs to go off before it dies.

I'm guessing you had the ssd about 3-4 months now. The rate you are now, it'll last over 10 years. The ssd will die from other reasons before wearing out.

 

[TyrOd]

The ssd will die from other reasons before wearing out.

Bingo.