| From: | Michael Stone <mstone+postgres(at)mathom(dot)us> |
|---|---|
| To: | pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: Huge Data sets, simple queries |
| Date: | 2006-01-29 15:43:24 |
| Message-ID: | 20060129154323.GA9976@mathom.us |
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| Lists: | pgsql-performance |
On Sun, Jan 29, 2006 at 12:25:23PM +0100, hubert depesz lubaczewski wrote:
>hmm .. do i understand correctly that you're suggesting that using
>raid 10 and/or hardware raid adapter might hurt disc subsystem
>performance? could you elaborate on the reasons, please?
I think it's been fairly well beaten to death that the low-end hardware
raid adapters have lousy performance. It's not until you get into the
range of battery-backed disk caches with 512M+ and multiple I/O channels
that hardware raid becomes competitive with software raid.
Mike Stone
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