Re: Recomended FS

On Fri, 24 Oct 2003, Scott Chapman wrote:

> On Friday 24 October 2003 16:23, scott.marlowe wrote:
> > Right, but NONE of the benchmarks I've seen have been with IDE drives with
> > their cache disabled, which is the only way to make them reliable under
> > postgresql should something bad happen.  but thanks for the benchmarks,
> > I'll look them over.
>
> I don't recall seeing anyone explain how to disable caching on a drive in this
> thread.  Did I miss that?  'Would be useful.  I'm running a 3Ware mirror of 2
> IDE drives.
>
> Scott

Each OS has it's own methods, and some IDE RAID cards don't give you
direct access to the drives to enable / disable write cache.

On Linux you can disable write cache like so:

hdparm -W0 /dev/hda

back on:

hdparm -W1 /dev/hda