SLUG Mailing List Archives
Re: [SLUG] Repair shop?
- To: SLUG Mailing List <slug@xxxxxxxxxxx>
- Subject: Re: [SLUG] Repair shop?
- From: Voytek Eymont <voytek@xxxxxxxxxx>
- Date: Wed Oct 16 13:48:02 2002
- Reply-to: Voytek Eymont <voytek@xxxxxxxxxx>
** Reply to note from Adam Hewitt <adam.hewitt@xxxxxxxxxxxx> 16 Oct 2002 12:18:14 +1000
> And I have been doing computer technician work for about 8 years now and
> I have always placed the CD ROM on the secondary IDE channel. The reason
> for this (and I admit I have never done any testing myself to find out
> if this is true) is that the IDE channel will default to the slowest
> speed on the ribbon cable, so if you have a hard drive and a cd drive
> located on the same IDE ribbon cable it will slow your hard drive speed
> If you think this is incorrect or have actually run tests regarding this
> please let me know.
on a perhaps related issue, I have been told it's a 'bad idea' to have a
slow device such as a scanner on one SCSI buss, as, it will bring the whole
SCSI chain to the lowest common speed.
I have a single AHA2940UWP running three chains:
external narrow: HP scanner and Yamaha CDRW
internal wide: 2 UW HDs ,
internal narrow: two narrow devices: CDROM, DAT.
I was told 'bad idea, get a second SCSI controller for scanner'
so, one day, I run some HD benchmarks, as is, with all stuff working;
then, progressively, I removed everything down to the single HD.
interestingly, the HD benchmarks didn't vary, regardless
so, I still only use a single SCSI controller.
of course, IDE isn't SCSI, and, YMMV, etc
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