> > > <SL> Have you disabled all OS write caching features for the

HDDs?

> > No. Should we?
>
> Yes, always!
>
> The only write caching which should be enabled is at the hardware

level,

> when you have a RAID controller with a battery backup module.
>
> This type of caching is hidden from the OS.

How can I disable OS write-cache? I found no mount option, and nothing
under /proc (We use a kernel 2.4.21)

Fabrice