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Re: 8x2.5" or 6x3.5" disks

From: Arjen van der Meijden <acmmailing(at)tweakers(dot)net>
To: Christian Nicolaisen <blackbrrd(at)gmail(dot)com>
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: 8x2.5" or 6x3.5" disks
Date: 2008-01-28 20:28:21
Message-ID: 479E3AE5.20600@tweakers.net (view raw or flat)
Thread:
Lists: pgsql-performance
On 28-1-2008 20:25 Christian Nicolaisen wrote:
> So, my question is: should I go for the 2.5" disk setup or 3.5" disk 
> setup, and does the raid setup in either case look correct?

Afaik they are about equal in speed. With the smaller ones being a bit 
faster in random access and the larger ones a bit faster for sequential 
reads/writes.

My guess is that the 8x 2.5" configuration will be faster than the 6x 
3.5", even if the 3.5"-drives happen to be faster they probably aren't 
50% faster... So since you don't need the larger storage capacities that 
3.5" offer, I'd go with the 8x 2.5"-setup.

Best regards,

Arjen

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