New SSDs are showing 98% and 99% in Crystaldiskinfo?

rpeters83

Limp Gawd
Joined
Jan 11, 2009
Messages
508
I run a personal Hyper-V server and recently switched my guest volumes over to two Crucial MX500 1TB SSDs (https://www.amazon.com/gp/product/B077SF8KMG/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1). I noticed just now that only after a couple hundred hours (355 and 194) they're showing as 98% and 99%. They're still pretty new, as I purchased them only 2 months ago.

Is this normal? For comparison, my (older) Samsung SSD still shows 100% in CDI.

Seeing as both these drives show the same level of wear... is this normal? At this rate will my drives wear out in a year? Thanks.

(the two drives, D and E below)

upload_2019-9-6_16-33-16.png
upload_2019-9-6_16-33-34.png
 

/dev/null

[H]F Junkie
Joined
Mar 31, 2001
Messages
14,877
I run a personal Hyper-V server and recently switched my guest volumes over to two Crucial MX500 1TB SSDs (https://www.amazon.com/gp/product/B077SF8KMG/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1). I noticed just now that only after a couple hundred hours (355 and 194) they're showing as 98% and 99%. They're still pretty new, as I purchased them only 2 months ago.

Is this normal? For comparison, my (older) Samsung SSD still shows 100% in CDI.

Seeing as both these drives show the same level of wear... is this normal? At this rate will my drives wear out in a year? Thanks.

(the two drives, D and E below)

View attachment 185439View attachment 185440
I have a packet capture box that I use at work for troubleshooting & it loses ~ 1%/month or so. MX500 1TB drive...
Depends how much you are writing to it.
 

rpeters83

Limp Gawd
Joined
Jan 11, 2009
Messages
508
I have a packet capture box that I use at work for troubleshooting & it loses ~ 1%/month or so. MX500 1TB drive...
Depends how much you are writing to it.
Their site says these things last for 360TBW (https://www.crucial.com/wcsstore/CrucialSAS/pdf/product-flyer/crucial-mx500-ssd-productflyer-en.pdf). I have 4.4 total, and if I were to estimate an average, maybe 1-2TB written per month, that's still quite a lot of years, but that assumes the full 360TBW.

What happens when the percentage above falls to 80%, 70%, or lower percentage? Will I risk more data loss and errors? Is there a minimum threshold I should be careful of? Thanks.
 

Maxx

[H]ard|Gawd
Joined
Mar 31, 2003
Messages
1,644
Normal. Many drive manufacturers tie the health % (or lifespan remaining) to the TBW, which is just warrantied endurance and not actual endurance. It just tells you how many warrantied writes you have left. The NAND on the MX500 I can tell you survives WAY more than the TBW. The TBW is like 360 P/E when I've seen Micron's 64-layer NAND survive up to 10K P/E.
 
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