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[Tom's]The OCZ Vertex 2 Conspiracy: Lost Space, Lost Speed? - Page 3

post #21 of 53
To dispel any misconceptions there are a few things going on here...

1. OCZ shipped without relabeling a bunch of high-density 64Gb 25nm NAND drives. These drives are the ones that are affected with capacity issues and use extra ~5GB for RAISE over-provisioning. It is my understanding that OCZ will not be shipping these reduced capacity drives any more but that does not do anything for those that are already in the retail channels.

2. OCZ has the same 25nm NAND drives available that use 32Gb density chips. These restore the "lost" capacity to the capacity directly comparable to older generation 34nm NAND drives.

3. If your drive shipped with firmware older than 1.27 your drive is guaranteed to be 34nm. If your drive shipped with firmware 1.27 there is a slight chance that you have a 25nm NAND drive. You can confirm this if you look at the capacity compared to the 34nm drives. If it is low then the drive is 25nm NAND. Drives that shipped with firmware 1.28 are guaranteed to be 25nm NAND. However, to be entirely sure just wait until OCZ releases the NAND ID tool sometime this week.

4. OCZ is replacing reduced capacity drives for those with proper capacity for anyone who has bought the reduced capacity drives to date. You just have to contact their RMA service. They are also covering all associated shipping costs of replacement (prepaid labels).

So this leaves performance...unfortunately if you are replacing 25nm drive with another 25nm drive you will still have unmatched performance when compared to the 34nm drive especially when writing partially compressible or incompressible data. Therefore, pairing 25nm NAND and older 34nm NAND in RAID-0 is basically useless as it stands right now since the lower performing 25nm NAND drive will cap the performance at the speeds it can achieve. Pairing 25nm drive with 34nm drive for RAID-0 is not recommended.

You can see some performance comparisons and issues with scaling in this thread over on OCZ http://www.ocztechnologyforum.com/fo...pressible-data

Future firmware updates may provide performance boots for these drives, but I would not hold my breath on these actually matching 34nm drives. For new Vertex 3 drives in 25nm NAND flavor the controller and number of channels have been upgraded/increased so this should counteract any issues wit performance loss due to the 25nm transition.

I'm currently waiting for my replacement drive.
Edited by dejanh - 2/21/11 at 10:53am
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post #22 of 53
ups, double post ¬¬
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post #23 of 53
Quote:
Originally Posted by awdrifter View Post
Wow, looks like OCZ still can't make a good SSD. I remember reading about the stuttering issue on their first gen SSD, and now this. I would definitely avoid OCZ SSD if I ever upgrade to SSD.
And the funny thing is, didn't they just drop their RAM business in favor of SSDs?
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post #24 of 53
Quote:
Originally Posted by dejanh View Post
To dispel any misconceptions there are a few things going on here...

1. OCZ shipped without relabeling a bunch of high-density 64Gb 25nm NAND drives. These drives are the ones that are affected with capacity issues and use extra ~5GB for RAISE over-provisioning. It is my understanding that OCZ will not be shipping these reduced capacity drives any more but that does not do anything for those that are already in the retail channels.

2. OCZ has the same 25nm NAND drives available that use 32Gb density chips. These restore the "lost" capacity to the capacity directly comparable to older generation 34nm NAND drives.

3. If your drive shipped with firmware older than 1.27 your drive is guaranteed to be 34nm. If your drive shipped with firmware 1.27 there is a slight chance that you have a 25nm NAND drive. You can confirm this if you look at the capacity compared to the 34nm drives. If it is low then the drive is 25nm NAND. Drives that shipped with firmware 1.28 are guaranteed to be 25nm NAND. However, to be entirely sure just wait until OCZ releases the NAND ID tool sometime this week.

4. OCZ is replacing reduced capacity drives for those with proper capacity for anyone who has bought the reduced capacity drives to date. You just have to contact their RMA service. They are also covering all associated shipping costs of replacement (prepaid labels).

So this leaves performance...unfortunately if you are replacing 25nm drive with another 25nm drive you will still have unmatched performance when compared to the 34nm drive especially when writing partially compressible or incompressible data. Therefore, pairing 25nm NAND and older 34nm NAND in RAID-0 is basically useless as it stands right now since the lower performing 25nm NAND drive will cap the performance at the speeds it can achieve. Pairing 25nm drive with 34nm drive for RAID-0 is not recommended.

You can see some performance comparisons and issues with scaling in this thread over on OCZ http://www.ocztechnologyforum.com/fo...pressible-data

Future firmware updates may provide performance boots for these drives, but I would not hold my breath on these actually matching 34nm drives. For new Vertex 3 drives in 25nm NAND flavor the controller and number of channels have been upgraded/increased so this should counteract any issues wit performance loss due to the 25nm transition.

I'm currently waiting for my replacement drive.
One thing to add from OCZ's forum: If you absolutely need the 34nm due to RAID situation or any other needs, you can request it. Though I doubt they'd have it in stock anymore.

http://www.ocztechnologyforum.com/fo...-drives/page27 Found one post on this link but I think it was stated one other time as well.
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post #25 of 53
I really liked the look of the vertex 2 and agility 2 drives... makes me want to avoid newer SSDs until everything stabilizes. Seems every couple of months one of the major SSD suppliers has an issue with their firmware, or some kind of issue with performance or stability.
post #26 of 53
Thread Starter 
My C300 will not performs as the Vertex 2, but i'm still loving it
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post #27 of 53
Quote:
Originally Posted by mothergoose729 View Post
I really liked the look of the vertex 2 and agility 2 drives... makes me want to avoid newer SSDs until everything stabilizes. Seems every couple of months one of the major SSD suppliers has an issue with their firmware, or some kind of issue with performance or stability.
SSDs are not for everyone. Early adopters always deal with issues like these, but that's the price you pay for performance.
Edited by dejanh - 2/21/11 at 12:29pm
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post #28 of 53

I vowed 1 year ago to never buy another OCZ product again, like ever, I'm glad I did after looking at like this...

Wait, the phones ringing...

That was Crucial....

They told me to give you guys a message....


Any Questions?



Edited by _GTech - 2/21/11 at 12:45pm
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post #29 of 53
Glad mines the old one
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post #30 of 53
Thread Starter 
Here is a little more info from Chris, the Tom's reviewer.

Quote:
Your line in the email sounds right—specifically, though, it’s the 120 GB and 60 GB drives. OCZ’s Europe office says 90 GB is affected as well. But apparently, 40 GB is NOT affected..
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