hw.ata.wc vs soft updates

[Alex de Kruijff]

On Wed, Oct 01, 2003 at 11:21:44AM +0400, Sergei Vyshenski wrote:
> Is it correct and/or clever to use BOTH
> 
> 1) soft updates enabled and 2) hw.ata.wc=0
> 
> on FreeBSD-4.9 system?
> 
> Will it enhance chances to have consistent disk
> after power loss?

Yes. That is the reason its disabled by defauld.

> How much slower it will be compared to the case of
> 
> 1) soft updates enabled and 2) hw.ata.wc=1

The difference can be noticed. So i guess 15 or 20%. However I have no
experince what so ever with this.

> Thanks in advance for any comment.
> Sergei
> 
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-- 
Alex

Articles based on solutions that I use:
http://www.kruijff.org/alex/index.php?dir=docs/FreeBSD/