" Only 70 full writes seems a little bit low for an SSD."

That's what I thought.  I was astounded to learn that that is in fact correct 
(at least for some of the drives we are using here).  Automatic recovery is how 
the SSD copes with this failure rate.

But it is entirely possible that the cause of your problems are something else.

Karl

-----Original Message-----
From: ext Uwe Schindler [mailto:[email protected]] 
Sent: Monday, August 19, 2013 12:31 PM
To: [email protected]
Subject: RE: Lucene tests killed one other SSD - Policeman Jenkins

Hi Karl,

Only 70 full writes seems a little bit low for an SSD. This SSD has a capacity 
of 64 Gigabytes so 53 Terabytes written is not bad for it. It already had the 
first few errors, so you might be right, as you see from this Smart data:

231 SSD_Life_Left           0x0013   096   096   010    Pre-fail  Always       
-       0

So this "arbitrary" counter just went down from 100 to 096. I have the feeling 
that the current issues with this SSD are not really write problems, more 
hardware interface or firmware problems (as seen quite often for OCZ Vertex 2). 
Otherwise it would fail very early. According this data it should survive more 
10th of years?

Uwe

-----
Uwe Schindler
H.-H.-Meier-Allee 63, D-28213 Bremen
http://www.thetaphi.de
eMail: [email protected]


> -----Original Message-----
> From: [email protected] [mailto:[email protected]]
> Sent: Monday, August 19, 2013 5:07 PM
> To: [email protected]
> Subject: RE: Lucene tests killed one other SSD - Policeman Jenkins
> 
> I am told that SSD's are spec'd for only 70 full writes before they 
> get an error.  The error block is set aside but eventually something 
> critical gets hit.  So you should probably should expect this to happen again.
>
> Karl



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