Archived from groups: comp.sys.ibm.pc.hardware.storage (
More info?)
"Folkert Rienstra" <see_reply-to@myweb.nl> wrote in message
news:3ag2bcF69p8goU3@individual.net...
> "Arno Wagner" <me@privacy.net> wrote in message
news:3aeiimF6bi9euU1@individual.net
> > Previously Joseph <spmok2@canada.com> wrote:
> > > On a standalone single user system:
> >
> > > How the does the speed of ATA-100 compares to that of the old SCSI-2
> > > (50pins) hard drives?
> >
> > I assume you mean fast-SCSI.
>
> Which is SCSI-2 speak for Synchronous SCSI:
> "Fast SCSI (synchronous data transfers of up to 10 mega-transfers per
second)"
> and
> "Synchronous transfer rates using a transfer period between 100 ns and 200
ns
> are known as the fast SCSI option."
>
> which SCSI-3 then defined as Fast-5 and Fast-10
>
> But then there is Fast-20, also known as Ultra
> and Fast-40 or Ultra2, sometimes called Ultra80
> and Fast-80 or Ultra160, sometimes called Ultra3
> and Fast-160 or Ultra320
> and Fast-320 or Ultra640
>
> > SCSI-2 is the command-set, not the bus.
>
> SCSI-2 is both. SCSI-3 is sub-divided into several documents.
>
> >
> > > Are there any info on the web that shows speed comparison between scsi
> > > and ata?
> >
> > Scatterd around.
>
> > Fast-SCSI has a 10MB/sec bus speed
>
> Nope. That is Fast-10, Narrow or Fast-5, Wide.
> Fast SCSI can be 20MB/sec as well (Fast-10 Wide).
>
> > and is really slowing down modern drives. Attaching a CDROM, a MO-drive
> > or a scanner with fast-SCSI is still o.k., but for disks you should use
one of
> > the modern SCSI variants.
> >
> > Arno
Actually, there was absolutely nothing wrong with Arno's post.
You defined Fast-SCSI as something different on the two different areas you
replied above. One tentatively agreed, the other opposed with Arno. Are
you high?
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