From mboxrd@z Thu Jan  1 00:00:00 1970
From: Lutz Vieweg <lvml@5t9.de>
Subject: Re: Software RAID and TRIM
Date: Mon, 18 Jul 2011 00:16:12 +0200
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References: <alpine.OSX.2.00.1106281628320.257@trogdor.csi.cam.ac.uk> <BANLkTimswAVra6qnMS4g8WRzs=dhi_f7OQ@mail.gmail.com> <alpine.OSX.2.00.1106291133060.257@trogdor.csi.cam.ac.uk> <iuf6me$9us$1@dough.gmane.org> <alpine.OSX.2.00.1106291348430.257@trogdor.csi.cam.ac.uk>
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Tom De Mulder wrote:
> I have a set of 4 Intel 510 SSDs purely for testing, and I have used 
> these to simulate the kinds of workload I would expect them to 
> experience in a server environment

Beware: The Intel SSDs are documented to voluntarily throttle write 
speed if they detect a lot of writing going on to meet their lifetime 
advertisement.

(I have not read such in the documentation of 
marvell/micron/indilinx/sandforce controllers, and indeed, when wiped 
once per week, our SSDs keep up their initial performance. And yes, I 
find it acceptable that they might wear out after >= 3 years :-)

Regards,

Lutz Vieweg