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Re: Contemplating SSD Hardware RAID - Mailing list pgsql-performance

From Florian Weimer
Subject Re: Contemplating SSD Hardware RAID
Date
Msg-id 82d3i777ow.fsf@mid.bfk.de
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In response to Re: Contemplating SSD Hardware RAID  (Yeb Havinga <yebhavinga@gmail.com>)
Responses Re: Contemplating SSD Hardware RAID  (Greg Smith <greg@2ndQuadrant.com>)
List pgsql-performance
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* 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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