Message-ID: <4E00B4B9.50006@2ndQuadrant.com>
Date: Tue, 21 Jun 2011 11:11:53 -0400
From: Greg Smith <greg@2ndQuadrant.com>
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To: Florian Weimer <fweimer@bfk.de>
CC: Yeb Havinga <yebhavinga@gmail.com>, pgsql-performance@postgresql.org
Subject: Re: Contemplating SSD Hardware RAID
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	<4E004D96.7010308@gmail.com>	<4E004E74.5020209@gmail.com>
	<82d3i777ow.fsf@mid.bfk.de>
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On 06/21/2011 07:19 AM, Florian Weimer wrote:
> 3ware controllers offer SMART pass-through, and smartctl supports it.
> I'm sure there's something similar for Areca controllers.
>    

Depends on the model, drives, and how you access the management 
interface.  For both manufacturers actually.  Check out 
http://notemagnet.blogspot.com/2008/08/linux-disk-failures-areca-is-not-so.html 
for example.  There I talk about problems with a specific Areca 
controller, as well as noting in a comment at the end that there are 
limitations with 3ware supporting not supporting SMART reports against 
SAS drives.

Part of the whole evaluation chain for new server hardware, especially 
for SSD, needs to be a look at what SMART data you can get.  Yeb, I'd be 
curious to get more details about what you've been seeing here if you 
can share it.  You have more different models around than I have access 
to, especially the OCZ ones which I can't get my clients to consider 
still.  (Their concerns about compatibility and support from a 
relatively small vendor are not completely unfounded)

-- 
Greg Smith   2ndQuadrant US    greg@2ndQuadrant.com   Baltimore, MD
PostgreSQL Training, Services, and 24x7 Support  www.2ndQuadrant.us
"PostgreSQL 9.0 High Performance": http://www.2ndQuadrant.com/books