Re: The sad Truth about iMac:

[Nick <spam@ix.netcom.com>]

As far as I know SCSI 3 is not an official standard, but if it were, it would
be Ultra Fast Wide which is rated at 40MBps.

coaxial wrote:

> In article <36e3f9c3.1762885@news.bconnex.net>, CUTjefbla@bconnex.net
> (Jeff Blakeney) wrote:
> > I'm not sure how FireWire
> > actually sends data but that speed translates into 40 - 50 MBps
> > (bytes).  And as far as I know, SCSI 3 is capable of this or at least
> > getting close to it.
>
> Correct me if I am wrong, but I am looking at a SCSI reference chart here
> and it shows that SCSI 3 operates up to 20 Mbps. That's only half the
> speed of FireWire.
>
> Perhaps you were thinking of SCSI 5 ?  This same chart shows SCSI 5  as
> operating up to 40 Mbps....but looking at the cost of a single SCSI 5
> cable which is three feet long....$79.95 Canadian.....ouch, that must hurt
> the pocket book.
>
> A single FireWire port can handle up to 63 devices, and it's hot
> pluggable. How many devices can SCSI 3 or SCSI 5 handle in their
> respective SCSI chains? (I'm asking because I really don't know...is it
> the same number as SCSI 1 and SCSI 2 ???). That would make them only
> handle what....up to 7 devices?
>
> > By the way, you mentioned in another post that Apple created the
> > FireWire standard.  I'm not sure if this is true or not.
>
> I never said they created the FireWire standard. I said back in 1995 Apple
> proposed the FireWire standard.
>
> > I remember
> > reading about FireWire years ago and I never heard Apple's name
> > mentioned in association with it.
>
> That's strange....isn't "FireWire" the trademarkable (or whatever
> legalise) name which Apple gave it's implementation of IEEE-1394 .....
>
> > As I've been using Apple computers
> > for 16 years, I think I would have remembered Apple's name if they had
> > been mentioned with FireWire.
>
> Well, I happen to have two books here which are both copyright 1994 and
> Apple's name is definitely mentioned alongside FireWire. This one book
> goes on to explain that Apple developed this new standard with Texas
> Instruments....
>
> > I think Apple is making a big mistake with the stuff they are doing
> > now.  The PC has been running into this problem for years.  There are
> > too many options which now means that there is no base standard PC
> > system which is why we have all the hoops and hurdles to deal with
> > when adding new hardware to a PC system.  I think you will soon see
> > this with the Mac as well because you will now have the ability to use
> > so many different interfaces for the same types of devices.
>
> Only for those people who insist on bringing all their SCSI and RS-422
> port devices and hooking them up with adapters to USB and FireWire.
>
> regards, coaxial