On Mon, 27 Mar 2000, Wandered Inn wrote:
> > and another thing.....
> >
> > If you put the 66 and the 33 on the same controller (master/slave), they will run at the speed of the slower device. :-)
>
> I've seen this claim tossed back and forth a number of times. The
> original claim was that you didn't want your cdrom on the same ide as
> your hard drive, that's why most PC manufacturers routinely installed
> the hard drive on primary and the cdrom on the secondary.
>
> I really would like to find some documented evidence of this issue, as
> the last I heard it was not true.
I have always assumed the claim to be true and wired accordingly, so as to
err on the side of caution. My system, for example, looks like this:
Primary master = WD 13.5 GB ATA66 7200 RPM
Primary slave = empty
Secondary master = empty
Secondary slave = 32X CDROM
SCSI 0:0:3:0 = Tandberg 1GB Magnus tape
SCSI 0:0:4:0 = Seagate 1GB SCSI-2 5400 RPM
SCSI 0:0:6:0 = Quantum 1.2GB SCSI-2 5400 RPM
SCSI 1:0:6:0 = Iomega Zip 100 Parallel
(BTW, the format on the SCSI address is controller:bus:target:lun)
This seems to be a fairly optimal arrangement, the tape and one of the
SCSI drives are rarely accessed devices, and otherwise the devices each
exist on separate buses. The only thing I would like to improve is to
eventually replace the parallel Zip 100 with a SCSI Zip 250. This
wouldn't impede in any significant manner because the Zip is also a rarely
accessed device.
-------------------------------------------------------------------------
Glenn C. Lasher, Jr - Senior Engineer, Telecommunications/UNIX/Windows NT
Data Tech Associates, Ltd, 883 Broadway, Albany NY, 518.465.1190
--
To unsubscribe: mail ">majordomo@ale.org with "unsubscribe ale" in message body.