> I actually don't know much about the I/O subsystem, but, no, WAL is
> not separated from data. I believe $PGDATA is on a SAN, but I don't
> know anything about its characteristics.
The computer is here:
$PGDATA is on a 5 disk SATA software raid 5.
Is there anything else that would be useful to know? ( Sorry, this
isn't a subject that I'm very familiar with )
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