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From: Peter Petrakis (voodooalphadriven.org)
Date: Fri Mar 15 2002 - 08:07:03 CST
> The one question I don't know about FireWire... can you run SCSI protocol
> over it like you can with Fibre? I assume that is what is happening with
> things currently, but I don't know.
I would say no for the moment though considering the diversity of the 1394
It's about as far off as someone just getting the initiative to 'do' it.
> The point being, FireWire has the potential to address far more devices
> than SCSI -- but since it is still a serial buss, the biggest problem
> becomes Distance. If you want SCSI 160 you are seriously distance limited.
> One assumes that will also become the case with the new FireWire standard.
The proposed 1394B spec fixes the distance problem. You'll actually be able
it as a networking device. Like FibreChannel, just cheaper :-)
> But in any case, unless you can fire off an I/O and then allow the device
> to disconnect from the bus until it completes, the actual
> throughput issues
> trancend the simple meg speeds.
Yup though I'm pretty sure FW devices can disconnect. I'll check on that.
> With disk drives, the real killer is RPMs. Rotational Latency is where the
> speed differences show up. 5400, 7200, 15K RPM drives all have a
IDE seems to be 'stuck' at 5200 RPM for what reason I don't know. The new
15K SCSI's are extremley fast but they are so LOUD that they don't belong
anywhere but in a machine room.
> the art in FireWire disk drives has the ability of the bus and the ability
> of the drives pretty well matched. Hence the tremendous drop in price
> recently of FireWire drives created by using these wrappers.
That sounds about right. It fills it's niche nicely.
> [And for what it's worth, I've now probably exhausted all of my
> rememberences from my last contact with Riche Larry.]
-- www.linuxalpha.org www.alphadriven.org Peter Petrakis Warrior/Engineer voodooalphadriven.org "<BLAM!!> Who the hell are you!? Name's Ash <click clock> Housewares..."
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