On 3/10/2012 4:35 PM, Adrian Reyer wrote:
> Hi Matt,
>
> On Fri, Mar 09, 2012 at 04:11:17PM +0000, Matthew Macdonald-Wallace (lists) 
> wrote:
>
>> second HW RAID-1 array (possibly even RAID-0 if it gives us more
>> performance!) - from there I would concentrate on MySQL turning as
>> opposed to anything else.
> Make sure you have cache ram on your raid controller and a battery
> backup unit installed. MySQL and Postgres like to write in sync. With
> BBU+cache the write is completed as soon as the controller has the data,
> no need to wait for disks. I doubt RAID0 would gain you much if any.

Another possibility is using SSD (Intel X25-E, etc.) for just the 
database storage, as it is very, very good at random i/o.


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