Re: easy project? IBM Microdrive

[mjmahon@aol.com (Michael J. Mahon)]

Sheldon Simms replied:

>On Wed, 18 Feb 2004 04:49:20 +0000, Michael J. Mahon wrote:
>
>> One advantage to SCSI is the ease of connecting two drives, so that
>> one can easily back up the other with a speedy volume copy.
>> (IDE can theoretically support this, but most IDE controllers seem
>> to handle only a "master" drive.)
>
>Interesting, I've never had any problems connecting two drives
>to an IDE bus as long as the jumpers on the drives are set
>correctly. However, my experience with IDE drives has been
>short. My main computer was a SCSI Mac until 1998, then I
>got a Dell laptop (IDE, but not user-maintained), In 2001
>I acquired my still current computer and used dual IDE drives
>on one channel as a RAID-1 setup. I never had a problem with
>that until one of the drives crashed after 2 years.

I meant _Apple II_ IDE controllers--and I suspect that it's not
the hardware but the firmware/drivers.

I've used the Vulcan and the SSH IDE controllers and they seem
to support only a "master" drive.  (I'd love to find out that I'm wrong. ;-)

I use master/slave configurations all the time on PCs, but that's
a different topic...

-michael

Check out amazing quality sound for 8-bit Apples on my
Home page:  http://members.aol.com/MJMahon/