I am curious :) 70X is really way too low.
I just checked the OCZ Vertex 3 behind the nightly Lucene performance
tests ( http://people.apache.org/~mikemccand/lucenebench/index.html ),
which indexes the full Wikpedia English export 3 times nightly.
It's written 74.4 TB, read 35.7 TB, and its odometer (SSD_Life_Left
from smartctl) says 98 out of 100 ... which I think equates to
~11,000x - 17,000x write endurance.
This thread is also fun:
http://www.xtremesystems.org/forums/showthread.php?271063-SSD-Write-Endurance-25nm-Vs-34nm
Users destroy their SSDs by writing and writing and writing until it dies :)
Mike McCandless
http://blog.mikemccandless.com
On Mon, Aug 19, 2013 at 12:50 PM, <[email protected]> wrote:
> Mike, I'm talking about a 1TB SSD option for some hardware we are buying. If
> you are really curious, I can ask the people who are doing the project for
> the model and specs.
>
> Karl
>
> -----Original Message-----
> From: ext Michael McCandless [mailto:[email protected]]
> Sent: Monday, August 19, 2013 12:47 PM
> To: Lucene/Solr dev
> Subject: Re: Lucene tests killed one other SSD - Policeman Jenkins
>
> Er, which drives have write endurance only 70x? That's exceptionally low? I
> thought this was more like ~1000x for modern consumer SSDs?
>
> Mike McCandless
>
> http://blog.mikemccandless.com
>
>
> On Mon, Aug 19, 2013 at 12:35 PM, <[email protected]> wrote:
>> " 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
>>
>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: [email protected] For
>> additional commands, e-mail: [email protected]
>>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: [email protected] For additional
> commands, e-mail: [email protected]
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: [email protected]
> For additional commands, e-mail: [email protected]
>
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
