Re: Multiple disks: RAID 5 or PG Cluster

From: PFC <lists(at)boutiquenumerique(dot)com>
To: mudfoot(at)rawbw(dot)com, pgsql-performance(at)postgresql(dot)org
Subject: Re: Multiple disks: RAID 5 or PG Cluster
Date: 2005-06-18 16:00:14
Message-ID: op.sskpeoazth1vuj@localhost
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> I do not know what clustering would do for you. But striping will
> provide a
> high level of assurance that each of your hard drives will process
> equivalent
> amounts of IO operations.

I don't know what I'm talking about, but wouldn't mirorring be faster
than striping for random reads like you often get on a database ? (ie. the
reads can be dispatched to any disk) ? (or course, not for writes, but if
you won't use fsync, random writes should be reduced no ?)

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