> -----Mensaje original-----
> De: pgsql-performance-owner@postgresql.org
> [mailto:pgsql-performance-owner@postgresql.org] En nombre de cluster
> Enviado el: Sábado, 30 de Agosto de 2008 07:21
> Para: pgsql-performance@postgresql.org
> Asunto: Re: [PERFORM] Best hardware/cost tradoff?
>
> We are now leaning towards just buying 4 SAS disks.
>
> So should I just make one large RAID-10 partition or make two
> RAID-1's having the log on one RAID and everything else on
> the second RAID?
> How can I get the best read/write performance out of these four disks?
> (Remember, that it is a combined web-/database server).
>
Make a single RAID 10. It´s simpler and it will provide you better write
performance which is where your bottleneck will be. I think you should
minimize the web server role in this equation as it should mostly work on
cached data.