On Tue, Feb 27, 2007 at 15:35:13 +1030,
Shane Ambler <pgsql@Sheeky.Biz> wrote:
>
> From all that I have heard this is another advantage of SCSI disks -
> they honor these settings as you would expect - many IDE/SATA disks
> often say "sure I'll disable the cache" but continue to use it or don't
> retain the setting after restart.
It is easy enough to tests if your disk lie about disabling the cache.
I doubt that it is all that common for modern disks to do that.