Re: pg_xlog safety

Andrew Sullivan wrote:
> On Tue, Jan 21, 2003 at 03:43:40PM -0500, Vivek Khera wrote:
>
> > So this leads me to my question: one of the tips for performance is to
> > move the pg_xlog to its own disk.  Now that I have a spare disk I was
> > considering moving pg_xlog there.  However, that's the only disk that
>
> Test this first.  On our Sun A5200 arrays, configured using Veritas
> and RAID 1+0, I have tried several times and failed to discover a
> performance andvantage by putting the WAL on another disk or pair of
> disks.  (In other configurations, the same is not the case.)

If you raid has battery-backed RAM cach in your controller, there is no
advantage to putting WAL on a separate disk --- was that the case?

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