OCZ Vertex 3 Max IOPS Performance Degradation

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youssef 2010

youssef 2010

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Hello Toms Hardware community,

I created this thread because I have been experiencing a weird issue with my OCZ SSD. I ran the AS SSD benchmark today only to discover a significant reduction in overall performance. :pfff: There's also a line under the drive description that says "31 K - BAD". On the bright side, I haven't experienced any errors with the drive. But I don't understand why the performance would decrease in such a way and would appreciate any help in understanding this matter. I will include the screenshots of the benchmark I ran today and another benchmark that I ran 1.5 years ago.

1.5 years ago

as_ssd_bench_OCZ_VERTEX3_MI_5_25_2013_18_34_43.png



Today

as_ssd_bench_OCZ_VERTEX3_MI_A_11_18_2014_10_09_4.png




Thank you for taking the time to read this message
 
Solution
Karsten75
From research I did last year when I bought a few 480 EVOs, their design lifetime under normal use is about 10 years, but the math indicate they may live for as much as 17 years under normal use. :)

They're still my drive of choice, since I don't feel I need the extra durability of the 840 Pro and now the 850s are on the market.

I'm looking right now at building a PC with either M.2 or PCIe SSDs for a customer. Still looking at all the specs and stuff. THe last PC I built for that guy outperformed a much more expensive PC that his buddy had that had the Revo PCIe drives in it. :)
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Karsten75

Karsten75

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SSD drives fail over time

Here is the latest in a long line of articles that describe a test and failure scenarios. GOod reading for background information on SSD endurance and failures.

Long story short, your SSD's NAND is slowly and gradually failing and that may contribute to poor response times. I'd say you've received a gentle warning to replace your SSD.

PS. Not sure that particular SSD was included, but a LOT of OCZ's troubles prior to their eventual demise and reincarnation came from quality issues with specific lines of their SSDs.
 
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youssef 2010

youssef 2010

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Karsten75

Karsten75

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Sorry: http://techreport.com/review/27062/the-ssd-endurance-experiment-only-two-remain-after-1-5pb

We may be talking about the same series of articles. :) I believe, without re-reading the article, that the Samsung was one of the final survivors.

If I have a NAND device and it starts to fail, I won't be messing around trying to revive it. I'd get a new one and clone the old drive over. I have too little experience of failed SSD drives to comment on your idea and what it would achieve.



 
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Karsten75

Karsten75

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Oct 15, 2009
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From research I did last year when I bought a few 480 EVOs, their design lifetime under normal use is about 10 years, but the math indicate they may live for as much as 17 years under normal use. :)

They're still my drive of choice, since I don't feel I need the extra durability of the 840 Pro and now the 850s are on the market.

I'm looking right now at building a PC with either M.2 or PCIe SSDs for a customer. Still looking at all the specs and stuff. THe last PC I built for that guy outperformed a much more expensive PC that his buddy had that had the Revo PCIe drives in it. :)
 
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Solution
Karsten75

Karsten75

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If it is, and I suggest you get SMART data to check for drive issues, then I suspect you can just reformat and it should be fixed? But why would you all of a sudden have an alignment error? Did you create/move/re-size partitions on the drive? AFAIK, that is the only way to get those types of issues.
 
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youssef 2010

youssef 2010

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That's the part that has me scratching my head in confusion. I didn't do anything of those and I performed a secure erase just before installing windows. The remaining SSD life according to the SMART data is 96%. I'll try to fix the alignment issue and get back to you if it works. I'll also perform another AS SSD run and will post the results if there is a significant change. Wish me luck
 
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youssef 2010

youssef 2010

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Well, I guess the problem was in the alignment after all

After Fixing the alignment

as_ssd_bench_OCZ_VERTEX3_MI_A_11_19_2014_01_13_3.png


While it's true that it's still a bit slower than the advertised specs and the online benchmark data. It's a lot closer now than it was before

I tried using Intel's RST driver only to discover that it hurt performance

as_ssd_bench_OCZ_VERTEX3_MI_11_19_2014_01_47_31.png




To fix the alignment, I created a backup using Acronis true image 2012. I then created a bootable flash with the complete version of Acronis on it. I used the bootable flash to erase the SSD and restore the backup afterwards. This was my first experience with backing up entire partitions so I was a little afraid but thankfully, everything went smoothly. I used the info in this forum post on OCN

http://www.overclock.net/t/1226963/how-to-properly-re-align-your-ssd-hdd-partitions/100#post_23164396

Update: I forgot to mention how to ensure that your partition is aligned correctly. I know you can see it in AS SSD but to double check, run msinfo32.exe from the start menu (Run command). Go to components, then storage, then Disks. Divide the "Partiton Starting Offset" number by 4096. If this returns a whole numberi.e. without decimals, then your partition is aligned correctly.

Alignment_Verification.png

 
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