How do you interpret SSD Wear leveling count

[Valharth1031]

Hi. I have a Samsung 850 Evo 250GB and the Wear leveling count on HD Sentinel and CrystalDiskInfo is 35. I read that there's a way to calculate how many years your SSD has left but I'm not sure how. Can someone enlighten me? 😀 I've had the SSD for about 10-11 months I think.

 

[Colif]

Kingston describe this SMART attribute as follows:

Number of erase/program cycles per block on average. This attribute is intended to be an indicator of imminent wear-out. Normalized Equation: 100 – ( 100 * Average Erase Count / NAND max rated number of erase cycles)

Ignore the Raw Data in these instances (They can be manipulated by manufacturers to work in different ways), and look at the Current Value column.

This source from Anandtech gives us a good indication of how to use this figure:

The Wear Leveling Count (WLC) SMART value gives us all the data we need. The current value stands for the remaining endurance of the drive in percentage, meaning that it starts from 100 and decreases linearly as the drive is written to. The raw WLC value counts the consumed P/E cycles, so if these two values are monitored while writing to the drive, sooner than later we will find the spot where the normalized value drops by one.
All of your drives are at between 95 and 100, and will eventually drop to 0. This is an estimation of how many write, erase, rewrite etc. cycles each block can go through before failing, and at the moment, one of your drives is estimated to have used 5% of it's current expected life span. Again, the key word here is estimated.

Note also that your drives may use different NAND technology, hence the differences in perceived life. Some NAND technology expects blocks to last for around 1000 PE cycles each, others can be rated for as much as 30,000.

https://superuser.com/questions/1037644/samsung-ssd-wear-leveling-count-meaning

this might show you what you are after: http://www.tomshardware.com/answers/id-1858529/understand-wear-level-count-sansung-840-pro-ssd.html

mines currently at 97, it starts at 100, so your drive has been used a lot.

 

[Valharth1031]

Kingston describe this SMART attribute as follows:

Number of erase/program cycles per block on average. This attribute is intended to be an indicator of imminent wear-out. Normalized Equation: 100 – ( 100 * Average Erase Count / NAND max rated number of erase cycles)

Ignore the Raw Data in these instances (They can be manipulated by manufacturers to work in different ways), and look at the Current Value column.

This source from Anandtech gives us a good indication of how to use this figure:

The Wear Leveling Count (WLC) SMART value gives us all the data we need. The current value stands for the remaining endurance of the drive in percentage, meaning that it starts from 100 and decreases linearly as the drive is written to. The raw WLC value counts the consumed P/E cycles, so if these two values are monitored while writing to the drive, sooner than later we will find the spot where the normalized value drops by one.
All of your drives are at between 95 and 100, and will eventually drop to 0. This is an estimation of how many write, erase, rewrite etc. cycles each block can go through before failing, and at the moment, one of your drives is estimated to have used 5% of it's current expected life span. Again, the key word here is estimated.

Note also that your drives may use different NAND technology, hence the differences in perceived life. Some NAND technology expects blocks to last for around 1000 PE cycles each, others can be rated for as much as 30,000.

https://superuser.com/questions/1037644/samsung-ssd-wear-leveling-count-meaning

this might show you what you are after: http://www.tomshardware.com/answers/id-1858529/understand-wear-level-count-sansung-840-pro-ssd.html

mines currently at 97, it starts at 100, so your drive has been used a lot.

I don't mine started from 100 rather it started from 0 working its way up to 35. I literally just saw it move to 35 from 34 today. Is it supposed to start from 100? Here's what I got from CrystalDiskInfo:

https://imageshack.com/i/pnHZ5soFj

 

[Colif]

try looking at it using Samsung Magician software as that is what I used to see my values. it starts at 100 and works down

My scores

 

[Colif]

ignore raw data, just look at current value & worst value, both show 98 on your drive. You have only used 2% of your drives wear count. It shows as always passing

Your drive is fine

to answer question, if you only used 2% in just under 1 year, and continue to use same amount for remaining life span, try about 50 years which is unlikely as most of us will upgrade before then.

 

[Valharth1031]

ignore raw data, just look at current value & worst value, both show 98 on your drive. You have only used 2% of your drives wear count. It shows as always passing

Your drive is fine

to answer question, if you only used 2% in just under 1 year, and continue to use same amount for remaining life span, try about 50 years which is unlikely as most of us will upgrade before then.

Ah, that's good to hear. Thanks for the help!