Samsung 870 EVO 2TB bad sectors: what should I do?

Shrek · Sep 14, 2021

What happens if the computer crashes or there is a power cut? I assume there can be data corruption even if the drive is just fine.

Swordmaster512 · Sep 14, 2021

Andy Shiekh said:
What happens if the computer crashes or there is a power cut? I assume there can be data corruption even if the drive is just fine.

Well, to be fair, in the last week I've had issues with electricity with lots of sudden power cuts...

Zareek · Sep 14, 2021

I would say if there are no longer any issues, it could have been some sort of glitch. Fill it back up and keep an eye on it. Do regular backups, maybe more than usual. Only store things you can afford to lose on it for a while.

I'm not sure how good Samsung support is in Italy but here in the US it is amazing! I recently RMAed an 860 EVO drive with a physically broken SATA connector. It was already a few years old and had some wear on it. I assumed they would charge me something to repair a broken connector. Samsung paid for overnight shipping both ways. They sent back a refurbished drive with zero wear on it.

Jetster · Sep 14, 2021

Told you, hardware manufactures will only take results from their software
Crystal disk cannot possibly keep all the specs from every manufacture. Therefore will give faults warnings at times.

chrcoluk · Sep 15, 2021

On ssd's reallocated sectors in my experience can happen due to external issues.

I would replace the cable, make sure its securely connected both ends, and if you have non stock voltages and/or overclock's consider reverting them, then monitor to see if they increase.

Also test your ram (properly using either karhu, hci or google stressapp).

R-T-B · Sep 15, 2021

Swordmaster512 said:
Don't know, before formatting I had run it twice with identical results.

However, S.M.A.R.T. in Magician reports this:
View attachment 216930 View attachment 216931

Maybe this is sufficient to prove drive failure?

Yes. That qualifies for a warranty return.

lexluthermiester · Sep 16, 2021

Swordmaster512 said:
Don't know, before formatting I had run it twice with identical results.

However, S.M.A.R.T. in Magician reports this:
View attachment 216930 View attachment 216931

Maybe this is sufficient to prove drive failure?

Yeah, that's just more evidence of a failing drive. That's Samsung's own utility giving those failure indications.

R-T-B said:
Yes. That qualifies for a warranty return.

Absolutely!

Mussels · Sep 16, 2021

I've only ever seen SSD's go from working to dead, never an in between

if samsungs utility shows errors, then samsung should be fine with a warranty return

lexluthermiester · Sep 16, 2021

Mussels said:
I've only ever seen SSD's go from working to dead, never an in between

It doesn't happen very often, but I've seen enough examples to have been able to recognize the OP's problem.

Mussels said:
if samsungs utility shows errors, then samsung should be fine with a warranty return

Samsung is likely to actually want that drive back to do diagnostics. They'll want to know what was going wrong and if it's potentially systemic. My guess? One of the NAND packages has a defective cell layer, either from a problem with the chemistry formulation, a problem with the layer application process or perhaps even an oxidation contamination.

Jetster · Sep 16, 2021

Contact Samsung again and see what they say. Let us know

Swordmaster512 · Sep 16, 2021

Yesterday, after I sent them all the information they required (various screenshots of Magician, photos of the drive and of a proof of purchase), RMA was approved: they sent an RMA form I had to fill out, which I immediately did, and soon after they contacted me again providing a shipping label and arranging a courier pick up for today. So if everything goes well the SSD will be on his way to their centre in the Netherlands already today.
I must say that up until now everything went pretty smoothly, in particular I appreciated the fast response time of the support. Anyways, I'll keep you guys updated. Thanks again to all of you!

lexluthermiester · Sep 16, 2021

Swordmaster512 said:
Thanks again to all of you!

You're very welcome! Glad we could help and that things with Samsung went smoothly for you!

Swordmaster512 · Sep 25, 2021

Quick update. On Wednesday the replacement drive arrived: since then I've been using it continuously and everything is fine. Wrote this post just to express my satisfaction with the RMA service, the procedure was pretty simple and they completed it in a very short time. Thanks again everybody!

Mussels · Sep 25, 2021

Awesome, sometimes customer service actually goes well and it's amazing

lexluthermiester · Sep 25, 2021

Swordmaster512 said:
Quick update. On Wednesday the replacement drive arrived: since then I've been using it continuously and everything is fine. Wrote this post just to express my satisfaction with the RMA service, the procedure was pretty simple and they completed it in a very short time. Thanks again everybody!

Good to hear! Glad you got things sorted and that we could help you arrive at a solution. Don't be a stranger!

eidairaman1 · Sep 25, 2021

Swordmaster512 said:
So the store where I bought the drive told me to contact Samsung directly. I wrote an email to their Memory Support (Hanaro) attaching the screenshot of chkdsk analysis and they replied with an automatic message that asks for further information, among other things a screenshot of Samsung Magician Diagnostic Scan results. After the Secure erase, though, both chkdsk and Diagnostic Scan don't find anything wrong with the SSD. Again I'm sorry for the noob question, but since the drive is now completely empty should I fill it with data in order to make visible the bad blocks? Results of complete diagnostic scan in Samsung Magician:

View attachment 216888

Just like a HD it marks the sectors bad and hides them to prevent use.

Zareek · Sep 28, 2021

Swordmaster512 said:
Quick update. On Wednesday the replacement drive arrived: since then I've been using it continuously and everything is fine. Wrote this post just to express my satisfaction with the RMA service, the procedure was pretty simple and they completed it in a very short time. Thanks again everybody!

Awesome, I'm glad to hear Samsung stands by their products in markets besides the US as well as they do here in the US.

las · Sep 28, 2021

Andy Shiekh said:
What happens if the computer crashes or there is a power cut? I assume there can be data corruption even if the drive is just fine.

Not really unless you use RAPID mode, which you should never do.

If you bench with RAPID mode enabled you are benching your RAM instead of SSD. And data gets stored in RAM first, meaning if you crash with data in RAM it might not have been saved to the actual SSD.

RAPID mode is pure marketing BS. Made for benchmarking/reviews. It does nothing for real world usage.

95Viper · Sep 28, 2021

Swordmaster512 said:
Quick update. On Wednesday the replacement drive arrived: since then I've been using it continuously and everything is fine. Wrote this post just to express my satisfaction with the RMA service, the procedure was pretty simple and they completed it in a very short time. Thanks again everybody!

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Samsung 870 EVO 2TB bad sectors: what should I do?

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