Fernando, thanks for the advice. It is appreciated.
Makes me wish I had bought SCSI hard drives.
John
>From: Fernando Lozano <[EMAIL PROTECTED]>
>Reply-To: [EMAIL PROTECTED]
>To: [EMAIL PROTECTED]
>Subject: Re: RAID1,Both IDE Hard Drives be on same Controller?
>Date: Wed, 14 Feb 2001 17:29:38 -0200 (EDT)
>
>Dave,
>
>
> > On Tue, Feb 13, 2001 at 11:35:00PM -0000, John Kennedy wrote:
> > > Should I remove the CDROM after installing RH-7.0
> > > or is it advisable/possible to buy a separate
> > > IDE controller card to connect 'just to' the IDE CDROM?
> >
> > The latter is certainly correct if you're worried about performance.
> >
> > I know that an operating CDROM as a slave _will_ slow transfers. I'm
>not
> > certain if just its presence, operating or not, will slow the bus--my
> > gut response is not. (But I'm certain that if I'm wrong, the collective
> > intellect here will correct me _muy pronto_.)
>
>
>I heard that many IDE controllers cannot set different PIO and DMA modes
>for the master and the slave, so you get the lowest level both devices (the
>HD and the CD-ROM) can support. Besides, IDE controllers serialize requests
>so you cannot read from the HD while you wait from data to came from the
>CD-ROM. That's different from SCSI which can send commands to one device
>while waiting other device retuns data.
>
>
>[]s, Fernando Lozano
>
>
>
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