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Re: With 4 disks should I go for RAID 5 or RAID 10

From: Vivek Khera <vivek(at)khera(dot)org>
To: pgsql-performance <pgsql-performance(at)postgresql(dot)org>
Subject: Re: With 4 disks should I go for RAID 5 or RAID 10
Date: 2007-12-27 16:24:30
Message-ID: 94FAC00E-BF43-4EE9-9E23-C02E71CFC683@khera.org (view raw or flat)
Thread:
Lists: pgsql-performance
On Dec 26, 2007, at 10:21 AM, Bill Moran wrote:

> I snipped the rest of your message because none of it matters.   
> Never use
> RAID 5 on a database system.  Ever.  There is absolutely NO reason to
> every put yourself through that much suffering.  If you hate yourself
> that much just commit suicide, it's less drastic.

Once you hit 14 or more spindles, the difference between RAID10 and  
RAID5 (or preferably RAID6) is minimal.

In your 4 disk scenario, I'd vote RAID10.


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