Is this SSD dead?

UberTiger said:
I've been using it for CCTV recording as a primary fast disk.

Is it about to die if at 1%?

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You bought Samsung 850 EVO for CCTV? :eek::o:cry:

Unfortunately you bought the wrong SSD for CCTV, 250GB Samsung 850 EVO rated 75TBW was not suitable for CCTV. You should bought 500GB WD Red SA500 SATA SSD rated for 2500TBW that are suitable for 24/7 operations like CCTV but OCUK do not stock it, you can order it somewhere.
 
AthlonXP1800 said:
You bought Samsung 850 EVO for CCTV? :eek::o:cry:

Unfortunately you bought the wrong SSD for CCTV, 250GB Samsung 850 EVO rated 75TBW was not suitable for CCTV. You should bought 500GB WD Red SA500 SATA SSD rated for 2500TBW that are suitable for 24/7 operations like CCTV but OCUK do not stock it, you can order it somewhere.
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Could be worse. Could be writing on DVD-R :D
 
AthlonXP1800 said:
You bought Samsung 850 EVO for CCTV? :eek::o:cry:

Unfortunately you bought the wrong SSD for CCTV, 250GB Samsung 850 EVO rated 75TBW was not suitable for CCTV. You should bought 500GB WD Red SA500 SATA SSD rated for 2500TBW that are suitable for 24/7 operations like CCTV but OCUK do not stock it, you can order it somewhere.
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lol, I don’t think I actually bought it specifically, I think I just had it lying around :D

Got a link to manufacturer page for the SA500?

A quick google on mobile and I only see one rated for 350TBW, not 2,500?
 
UberTiger said:
lol, I don’t think I actually bought it specifically, I think I just had it lying around :D

Got a link to manufacturer page for the SA500?

A quick google on mobile and I only see one rated for 350TBW, not 2,500?
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The product page here does say "Endurance of up to 2500TBW", so that's probably for the 4 TB model. So 350 TBW is probably for the 500 GB model.

Personally I'd a 1 TB version of that drive, as it's not that much more from what I can tell. If you can, allocate the partition so only 80% is used, leaving 20% so the drive can run background garbage collection.
 
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Ahh, that makes sense, thanks.

Looking at the spec for the Samsung 870 evo, the TBW seems pretty close for for the 1TB, and less for the 2TB and 4TB.

* Warrantied TBW for 870 EVO: 150 TBW for 250 GB model, 300 TBW for 500 GB model, 600 TBW for 1 TB model, 1,200 TBW for 2 TB model and 2,400 TBW for 4 TB model
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Oh wow I didnt realised my 1TB Samsung 850 EVO had 150TBW endurance after checked 850 EVO specs, I thought it had 300TBW endurance.

I bought it back in 2017, used it as OS drive.

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So it is still in good health at 91% after 7 years and nearly 300TBW endurance. OP's 250GB Samsung 850 EVO managed to reached end of life at nearly 1600TBW, it looked like my 1TB Samsung 850 EVO will have very good long life, could last for another 20 years. :eek: :D
 
Wear levelling count goes on how much program/erase cycles the nand can do based on its specs. Apparently if a drive is rated at 1000 p/e cycles that just means that's the minimum guaranteed amount and it could well go past that limit as you have found out.
There was a article somewhere maybe on anandtech where drives were tested continuously and most went well over the rated pe cycle count.
Some drives also have a tbw rating based on pure 4k random writes and the tbw rating for large sequential writes is usually much higher
 
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