ATA-100 versus SCSI-2

  • Thread starter Thread starter Joseph
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Joseph

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?

Are there any info on the web that shows speed comparison between scsi
and ata?
 
Joseph said:
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?
Click to expand...

You must specify the make and model, or at least the ages, of the two
drives you want to compare. AFAIK, just about any narrow SCSI drive will
be at least two years old. Any new ATA/100 drive would leave it in the
dust.

Are there any info on the web that shows speed comparison between scsi
and ata?
Click to expand...

There are several generations and types of ATA and SCSI, each with
different specifications for maximum transfer rates. In any case, the
interface is almost always faster than the drive itself.
 
Previously Joseph said:
On a standalone single user system:
Click to expand...
How the does the speed of ATA-100 compares to that of the old SCSI-2
(50pins) hard drives?
Click to expand...

I assume you mean fast-SCSI. SCSI-2 is the command-set, not the bus.
Are there any info on the web that shows speed comparison between scsi
and ata?
Click to expand...

Scatterd around. Fast-SCSI has a 10MB/sec bus speed 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
 
Arno Wagner said:
I assume you mean fast-SCSI.
Click to expand...

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.
Click to expand...

SCSI-2 is both. SCSI-3 is sub-divided into several documents.
Scatterd around.
Click to expand...
Fast-SCSI has a 10MB/sec bus speed
Click to expand...

Nope. That is Fast-10, Narrow or Fast-5, Wide.
Fast SCSI can be 20MB/sec as well (Fast-10 Wide).
 
Folkert Rienstra said:
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 both. SCSI-3 is sub-divided into several documents.



Nope. That is Fast-10, Narrow or Fast-5, Wide.
Fast SCSI can be 20MB/sec as well (Fast-10 Wide).
Click to expand...

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?
 
How the does the speed of ATA-100 compares to that of the old SCSI-2
(50pins) hard drives?

Are there any info on the web that shows speed comparison between scsi
and ata?
Click to expand...

http://www.storagereview.com/comparison.html

Look under the Office DriveMark 2002 benchmark if you primarily use business
apps, High End for multimedia apps, Gaming for... guess what?, etc.

I don't know whether they'll have the exact drives you want to compare in
the database but there should be something approximate to it. You can also
do a site search for your specific model.
 
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