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Samsung 840 EVO read speed drops on old-written data in the drive - Page 294

post #2931 of 3279
Quote:
Originally Posted by Sheyster View Post

...(FUD)...

You people really aren't very street smart. Sheesh! rolleyes.gif

Just because companies generally cover things up does not mean that Samsung is covering anything up in this case. Intel had a similar issue (with write speeds, not reads) on the X25-M. Three months later, they fixed it. It wasn't a conspiracy or a cover up. They just fixed the problem - just like how Samsung has now. Seriously, guys, give it a rest.
post #2932 of 3279
Quote:
Originally Posted by malventano View Post

Just because companies generally cover things up does not mean that Samsung is covering anything up in this case. Intel had a similar issue (with write speeds, not reads) on the X25-M. Three months later, they fixed it. It wasn't a conspiracy or a cover up. They just fixed the problem - just like how Samsung has now. Seriously, guys, give it a rest.

Can you personally guarantee that they fixed it with the latest firmware? Yes or no?
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post #2933 of 3279
Quote:
Originally Posted by Sheyster View Post

Can you personally guarantee that they fixed it with the latest firmware? Yes or no?

Why ask a question like that, where you know there can't be a 100% answer?

Personally, I'd like a version of this maybe-not-fixed firmware for my 840, so I'd be happy if the Samsung bashing would be channeled into a direction that's about them ignoring the users of their other TLC drives. Thank you. tongue.gif

I am guessing they don't have any engineers/programmers tasked to be involved with those other drives anymore, at least not any that are qualified to implement new features. Those drives are just two or three years old or so? That's something people might be interested to know about. It might show you what to expect from Samsung with regards to support for stuff you buy from them.
post #2934 of 3279
Quote:
Originally Posted by deepor View Post

Why ask a question like that, where you know there can't be a 100% answer?

I guess I felt like he was calling me out, so I called him out.

I think I'm gonna bow out of this topic (and the associated threads) for a while. I feel I've done all I can as a "consumer advocate" for this issue. It's time to move on to some fun stuff now. thumb.gif
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post #2935 of 3279
People have hacked hard drives before and even booted linux on the SoC.
https://spritesmods.com/?art=hddhack

Basically what he did was altering the firmware so it looked for a string of data and when a match was found it altered that data to something else.

This allowed him to change passwords and even after a system was reinstalled the hack still worked since every time the password file was written the drive changed it to the password the hacker wanted on the root account.
I even think the snowden leaks mentioned that the NSA basically did the same thing to some systems.

A hard drive has a chip with a CPU, RAM and storage, SSD should have the same so theres all the hardware a computer needs so a HDD and an SSD is a computer on its own.
It would be logical to assume a SSD could be hacked to return data that dont match what the user stored on it and that it could modify data if a match was found when write was made.

But yes it has been proven that hard drives and possibly ssd's can be hacked and exploited to alter files on a system.

But Im no conspiracy nut and I dont think Samsung have don anything with the firmware that would fudge benchmark results.

I also believe the firmware fixed the drive now.

But do I know for sure? No I just believe based on what I know to be most likley.

I think the thin foil hats needs to come off now because this is just dumb..
post #2936 of 3279
so this firmware and magician 4.6 are a go? Been hesitant to deploy the latest fix across the 4 840 EVOs I have in service across the midwest
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post #2937 of 3279
Quote:
Originally Posted by jorpe View Post

so this firmware and magician 4.6 are a go? Been hesitant to deploy the latest fix across the 4 840 EVOs I have in service across the midwest

To be honest, not sure. Like you I was holding off and did it last night. Numbers below are rough but close enough.

Max 320 reads 370 writes (using magician benchmark). Random reads were shocking, ~9k not 98k with writes ~27k :O

Uninstalled 4.5 and installed 4.6. Reads 380, writes 370. Randoms didn't change at all.

Updated firmware, no change.

Ran advanced disk utility doo dah which took about an hour (155GB free 500GB drive). Reads were 260 and writes 280! Randoms didn't change at all.

So I shut down and put the PS3 on :/
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post #2938 of 3279
Quote:
Originally Posted by malventano View Post


They don't do this to cover anything up - it's just the nature of dealing with a foreign company. That said, their statements so far have been pretty much exactly what we've seen in testing. If anything they came across as worse than they actually were, as they first implied that Magician would be required to periodically refresh the drive with no other way to increase read speeds. After public release, many verified that the patch alone mostly restored speeds without the need for refreshing.

In all do respect, @malventano, Asian companies do cover things up when they screw up.  I have worked with them probably longer than some readers here are old.  It is in their culture and DNA to not admit failure.  Ever hear of the high rate of suicide for Japanese executives at failing companies?  Koreans are the same way. They take this stuff very personally.  Large American companies do it too but tend to hide behind the corporate veil and so executives don't take failure so personally.  I'm sure you know what I'm talking about. 

 

Personally, I think you have it right in that the problem is fixed this time.  I think the delays and obfuscation from Samsung is in the interest in getting patent protection on some new nand cell drift read algorithm they figured out.  The evidence seems to bear out the fact that they did indeed improve this.  Whether it has longevity is another story....  The reported problems with OS problems is another story and beyond my level of expertise.  Perhaps image comparison tests should be done to try to detect data corruption?

 

Seriously, guys.  Why don't you all take a step back and give the fix some more time instead of infighting amongst yourselves.  I thought everyone here has a common goal to get to the bottom of this and it saddens me to see you guys taking jabs at each other. 

post #2939 of 3279
Quote:
Originally Posted by Spacedinvader View Post

To be honest, not sure. Like you I was holding off and did it last night. Numbers below are rough but close enough.

Max 320 reads 370 writes (using magician benchmark). Random reads were shocking, ~9k not 98k with writes ~27k :O

Uninstalled 4.5 and installed 4.6. Reads 380, writes 370. Randoms didn't change at all.

Updated firmware, no change.

Ran advanced disk utility doo dah which took about an hour (155GB free 500GB drive). Reads were 260 and writes 280! Randoms didn't change at all.

So I shut down and put the PS3 on :/

That is disheartening. I've gone ahead on one drive I possess locally and it's at 91% on the advanced optimization... Here's to hoping your results were a fluke (and they improve for you as well)
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post #2940 of 3279
Quote:
Originally Posted by jorpe View Post

That is disheartening. I've gone ahead on one drive I possess locally and it's at 91% on the advanced optimization... Here's to hoping your results were a fluke (and they improve for you as well)

updated to say the firmware wont even update on a second drive in a laptop
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