Jan Edler wrote:
> On Mon, Jan 10, 2000 at 12:49:29PM -0800, Dan Hollis wrote:
> > On Mon, 10 Jan 2000, Jan Edler wrote:
> > > - Performance is really horrible if you use IDE slaves.
> > > Even though you say you aren't performance-sensitive, I'd
> > > recommend against it if possible.
> >
> > My tests indicate UDMA performs favorably with ultrascsi, at about 1/6 the
> > cost. Cost is often a big factor.
>
> I wasn't advising against IDE, only against the use of slaves.
> With UDMA-33 or -66, masters work quite well,
> if you can deal with the other constraints that I mentioned
> (cable length, PCI slots, etc).
Do you have any numbers handy ?
will the performance of master/slave setup be at least HALF of the
master-only setup.
For some apps cost is really important, and software IDE RAID has a very low
price/Megabyte.
If the app doesn't need killer performance , then I think it is the best
solution.
now if we only had soft-RAID + journaled FS + power failure safeness right now
...
cheers,
Benno.
