Subject: Re: alpha support for Ultra DMA EIDE?
To: Paul H. Anderson <pha@pdq.com>
From: Jason Thorpe <thorpej@nas.nasa.gov>
List: port-alpha
Date: 03/15/1999 12:49:13
On Mon, 15 Mar 1999 11:27:51 -0500 (EST)
"Paul H. Anderson" <pha@pdq.com> wrote:
> I need to buy a bunch of IDE drives - is it worth getting 7200 RPM Ultra
> DMA drives for my alpha 164LX motherboards? That is, will there be a
> substantial speed improvement over a typical 5400 rpm drive? The main
> data drives in these boxes are a pair of IBM 9ZX 10K RPM drives that will
> be in a ccd array, so I want my boot disk to not slow me down under any
> circumstances.
The PCI IDE controller in the 164LX doesn't support Ultra DMA... only
DMA. So, an Ultra DMA disk wouldn't necessarily help you too much.
-- Jason R. Thorpe <thorpej@nas.nasa.gov>