From: Andrew Dunstan <andrew@dunslane.net>
To: Campbell, Lance <lance@illinois.edu>
Cc: pgsql-performance@postgresql.org <pgsql-performance@postgresql.org>
Subject: Re: Tablespaces on a raid configuration
Date: Fri, 30 Mar 2012 11:02:44 -0400
Message-ID: <4F75CB14.9060607@dunslane.net> (raw)
In-Reply-To: <B75CD08C73BD3543B97E4EF3964B7D701E442099@CITESMBX5.ad.uillinois.edu>
References: <B75CD08C73BD3543B97E4EF3964B7D701E442099@CITESMBX5.ad.uillinois.edu>
On 03/30/2012 10:45 AM, Campbell, Lance wrote:
>
> PostgreSQL 9.0.x
>
> When PostgreSQL storage is using a relatively large raid 5 or 6
> array is there any value in having your tables distributed across
> multiple tablespaces if those tablespaces will exists on the same raid
> array? I understand the value if you were to have the tablespaces on
> different raid arrays. But what about on the same one?
>
>
Not answering your question, but standard advice is not to use RAID 5 or
6, but RAID 10 for databases. Not sure if that still hold if you're
using SSDs.
cheers
andrew
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To: pgsql-performance@postgresql.org
Cc: andrew@dunslane.net, lance@illinois.edu
Subject: Re: Tablespaces on a raid configuration
In-Reply-To: <4F75CB14.9060607@dunslane.net>
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