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I will buy another SSD when these come into a realistic pricerange - Page 4

post #31 of 35
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Quote:
Originally Posted by Blindsay View Post
heck even the ssd companies are starting to switch to mlc for their enterprise drives, slc is a dieing breed
It sure is Personally I think it's because it's less profitable, it's certainly not inferior, quite the opposite. I saw an article in 2008 talking with despair about SLCs being phased out of the market after all the good it's done bringing drive life up to a reasonable level for enterprise servers. Such is life I suppose.

Same kind of thing happened to RAM disk SSDs if I am correct?

Edit: found just 2 models of RAM disks left on the market here in the UK lol: http://www.microdirect.co.uk/home/pr...ource=googleps
Edited by Jennasis - 4/13/11 at 9:17am
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post #32 of 35
Quote:
Originally Posted by Jennasis View Post
SLCs in a home user environment have 10x the lifespan of an MLC

If you have a program writing and erasing lots of little files (as many do unfortunately) and you don't link those writes and erases to a folder on another drive, your drive can chew through it's cell life very quickly; unless you are a user who is used to tweaking the hell out of all your installs, an MLC can hit corruption and other issues within a year easy, and that's not me just speculating, I've seen it happen first hand on more than one occasion
No.... you are misunderstanding what I am saying.

The count of PE cycles does not directly always relate to life expectency.

Even though if SLC NAND is rated 10 times the PE cycles than a MLC NAND, it does NOT mean the SSD has 10 times the life expectency.

Almost no SSD failure is not due to PE cycles being used up. Remember that a worn-out cell is still able to be read from for 1 year. How do you know first hand that a SSD is dead due no more avaliable NAND to write to?

SLC is not as needed in the long run because of eMLC and ECC.
Edited by DuckieHo - 4/13/11 at 9:55am
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post #33 of 35
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Quote:
Originally Posted by DuckieHo View Post
No.... you are misunderstanding what I am saying.


The count of PE cycles does not directly always relate to life expectency.

Even though if SLC NAND is rated 10 times the PE cycles than a MLC NAND, it does NOT mean the SSD has 10 times the life expectency.


SLC is not as needed in the long run because of eMLC and ECC.
Naturally there are other factors involved besides write endurance, I'm certainly not denying that, but to me it's always felt like one of the most important bits to consider.

eMLC will provide better w/e for home users and cheaper enterprise solutions, however the price point on them will be pretty steep still. SLC will still be there as eSLC is also on the drawing board.

I've never come across ECC as an SSD type, what is that? Is that to do with error correction, i.e. disconnecting bad blocks/sectors etc?

Edit: I think you were referring to memory error correction rather than an ssd type *slaps forehead*, in which case yeah, it'll be nice when that works 100%
Edited by Jennasis - 4/13/11 at 10:08am
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post #34 of 35
This would interest most of you:
http://forums.anandtech.com/showthread.php?t=2157523

That user is stress testing his SSD with write cycles, something no sane user should ever do. Though so far its lasted 645TB and still going (I believe he hasnt even dipped below 50% ssd health)
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post #35 of 35
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Quote:
Originally Posted by Scytus View Post
This would interest most of you:
http://forums.anandtech.com/showthread.php?t=2157523

That user is stress testing his SSD with write cycles, something no sane user should ever do. Though so far its lasted 645TB and still going (I believe he hasnt even dipped below 50% ssd health)
Interesting thanks for that
I wonder what kind of burn test he is running on it, i.e. will he be using lots of different writes or a set size.

Really it's not going to give an accurate idea of drive life under normal use with many different types or writes and erases, but it will certainly be interesting to see how long it lasts him

Like you said, rather him than me, I havn't got money to burn and he won't likely be able to RMA that
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