From: Florian Weimer <fweimer@bfk.de>
To: Yeb Havinga <yebhavinga@gmail.com>
Cc: Greg Smith <greg@2ndQuadrant.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: Contemplating SSD Hardware RAID
Date: Tue, 21 Jun 2011 11:19:43 +0000
Message-ID: <82d3i777ow.fsf@mid.bfk.de> (raw)
In-Reply-To: <4E004E74.5020209@gmail.com>
References: <4E0015F2.9060504@drivefaster.net>
<4E003B44.9090005@2ndQuadrant.com>
<4E004D96.7010308@gmail.com>
<4E004E74.5020209@gmail.com>
* Yeb Havinga:
> I forgot to mention that with an SSD it's important to watch the
> remaining lifetime. These values can be read with smartctl. When
> putting the disk behind a hardware raid controller, you might not be
> able to read them from the OS, and the hardware RAID firmware might be
> to old to not know about the SSD lifetime indicator or not even show
> it.
3ware controllers offer SMART pass-through, and smartctl supports it.
I'm sure there's something similar for Areca controllers.
--
Florian Weimer <fweimer@bfk.de>
BFK edv-consulting GmbH http://www.bfk.de/
Kriegsstraße 100 tel: +49-721-96201-1
D-76133 Karlsruhe fax: +49-721-96201-99
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To: pgsql-performance@postgresql.org
Cc: fweimer@bfk.de, yebhavinga@gmail.com, greg@2ndQuadrant.com
Subject: Re: Contemplating SSD Hardware RAID
In-Reply-To: <82d3i777ow.fsf@mid.bfk.de>
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