Waar ik in eerste instantie van schrok was deze posting uit juni 2009 van een OCZ medewerker die erg open er eerlijk is in deze thread over SSD mlc schijven. Wat ik daar in ieder geval uit begrijp is dat je zo min mogelijk moet benchmarken

Als ik de 90GB OCZ vertex 2 koop zoals ik van plan was en deze een partitie geef van 60GB zou die een hele tijd mee moeten gaan.
http://www.ocztechnologyf....general-discussion/page1
"Here is what i know regarding why some of you who had drives reporting 10K P/E now have 5K P/E
Samsung look to have changed specs on some of their nand, they have done this as some cells have shown to only last around 5k within the IC's. Reports coming back to us are saying that this may be as low as 0.1% of the total cells BUT they have still lowered the specs.
What this means is the reported drive life you will see in SMART will go down, and will reduce much faster than it did before, the issue is it may be reporting what 0.1% of the cells are doing and eventually the life counter will show 0% and the drive will still be working. I know this is not ideal, I know this means you will not be able to monitor your drive life.
Crystaldiskinfo and OCZsmart look to be reporting correctly based on what the FW is telling them, what they can not tell you is they actually misreporting what the bulk of the cells are actually going to do.
Now you are aware of this you need to digest the following info also:
we use nand from many manufacturers, some of this is rated at 5k from the get go.
What this means is you all need to take care of the SSD, you all need to realize continual benching to check speed is going to kill the drive really quite fast. Random write tests are the worst as they partially fill blocks BUT the whole block has to be erased on a P/E cycle.
So....stop benchmarking, stop worrying about speed and enjoy the drives.
Short stroking does help increase drive life, Vertex and Agility do only have a tiny amount of over provisioning, anything you can add will ultimately help drive life longevity.
30's try 25GB
60's try 45GB
120's try 100 or even as low as 80GB
240's try 200GB
Now I am NOT saying OCZ is telling you you have to short stroke the drive, i am offering you a way for you to help ensure the drives will last well into the future. OCZ has made it clear they can not offer a warranty on nand burn out rate, this means the faster you wear the drive out the faster you will be buying a new one...its really that simple.
MLC nand has a finite life, always has had and always will have
This means you should rethink the way you think or use the drives:
1 they are NOT for storage as this will use up cells that really need to be available to wear levelling.
2 if you need storage add a standard spinning HDD either internally or over USB if you have a laptop.
3 its worth considering short stroking to enhance drive life
4 its worth considering limiting the amount of writes windows makes in logs and caches to the drive
5 do not benchmark the drives often, this will just wear it out very fast
6 consider the drives for the OS only,leave as much free space as you can to help wear levelling
Now, I have not said you have to do these things, i just feel they are worth considering as they can help"
En nog een:
"gentlemen
One of the issue we have is we are the ONLY manufacturer that is as open as we are now about PE cycle count, all competitors are hiding this info from you pretty much which unfortunately limits what we really want to tell you.
Regards what nand is used on each drive, i doubt I will be able to tell you, I will say this:
The 10K IC's we used on samsung based vertex at the start are no longer available,they were superseded with new IC's that have a 5K count. So this means OCZ were unable to buy those 10K IC and were forced to move to 5k nand just the same as everyone else was.
We looked at the projected life calculations and the drives should give at least to warranty end if not more BUT this is wholly dependant on usage pattern, which we can NOT predict.
Also consider you may only write 10GB of data a day BUT its all random and its all 4k or less, this will ravage a drive much more than if you write 10GB of sequential data, again we can not predict this.
So...you produce the drives, you try to educate people to NOT over write to the drives needlessly....which is something I have been doing for over 12months now and im going to be brutally honest...around 1% of you guys actually listen to me. I sit reading the forums daily and I see people killing drives worrying about 5% speed drops in AS SSD...forgetting AS SSD writes 3GB of data every time you run it.
I do agree clearer info needs to be available to end users, projected scenarios for drive life would be one way BUT they would ONLY be a lose guide....and could not be an indication of warranty. I will put this to OCZ in my weekly meeting but at this time i guarantee nothing.
I also think its now time to revisit my win7 tweaks thread and maybe create a new one where we seriously ONLY look at reducing needless writes to the drives, everything before was on the whole speed orientated with a small portion being to save writes...now it needs to be the other way round. Im not a code guru but I feel we have the talent on the forum to come up with a run once script that takes into account you have 2 drives attached and the second drive will be used to take all those unneeded writes off the SSD...so think of it as the 1 tweak to kill off all unnecessary writes and all you do is hit 1 button to do so"