Nomenclature

[RamaV]

Im the guy asking about the 11 West Digital SCSI drives i just got. Got another question, cant remember all the SCSI levels and wording. WD page doesnt give much info about the WDE 9100, on the actual disk it says:
Single Ended Ultra Fast Wide SCSI -3
I cant recall what speed that is. And the WD site doesnt list this drive as UFW SCSI 3, it just says Ultra 2 SCSI. I know these are 80 pin drives. But i cant imagine why the drive would say UFW SCSI 3 and the website Ultra 2. Last time i got into SCSI heavy i remember that people had different ways of describing different SCSI speeds, and that not everyone was consistent.

Can someone remind me what U.F.W SCSI 3 is, so i get the right controller/RAID card.
No sense wasting money on a card that outperforms my drives, on the other han i do want to maximize the speed and dont want a card that doesnt use all the speed i can.

Thanks, RamaV

" He who (BLEEPS) nuns, will later join the church " Joe Strummer, The Clash - "Death or Glory"

 

[sjonnie]

You're going to have to determine exactly which WDE9100 model you have.

<pre>Model
Numbers Interface Cache
WDE9100-0003 Ultra-SCSI Single-ended 50-pin Narrow 512 KB
WDE9100-0007 Ultra-SCSI Single-ended 68-pin Wide 512 KB
WDE9100-0008 Ultra-SCSI Single-ended 80-pin Wide 512 KB

AV Optimized Models
Model Numbers Interface Cache
WDE9100-AV0016 Ultra-SCSI / Ultra2 SCSI 68-pin 1 MB
WDE9100-AV0017 Ultra-SCSI / Ultra2 SCSI 80-pin 1 MB

Model
Numbers Interface Cache
WDE9100-0024 Ultra-SCSI / Ultra2 SCSI 68-pin 512 KB
WDE9100-0025 Ultra-SCSI / Ultra2 SCSI 80-pin 512 KB

AV Optimized Models
Model
Numbers Interface Cache
WDE9100-AV0030 Ultra-SCSI / Ultra2 SCSI 68-pin 4 MB
WDE9100-AV0034 Ultra-SCSI / Ultra2 SCSI 80-pin 4 MB
</pre><p>If you have an UltraFast Wide 80pin then I'd guess you have a WDE9100-0008 but presumably the full number is on the drive label?

<A HREF="http://www.transintl.com/technotes/scsi.htm" target="_new">Here</A> is an explanation of SCSI specs. Whilst it doesn't actually mention SCSI-3 it seems logical that it corresponds to Ultra SCSI 20Mb/sec.

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[RamaV]

Yup and here is what i see on the back of the HD:

9.1 GB Single ended Ultra Fast Wide SCSI-3 Interface
WD MDL WDE9100-9108A4

Cant seem to figure which that is....

RamaV

" He who (BLEEPS) nuns, will later join the church " Joe Strummer, The Clash - "Death or Glory"

 

[sjonnie]

The strange numbering could be becuase the drive was supplied through an OEM such as Compaq or Dell. Still, it seems consistent with it being a WDE9100-0008 drive. The specs say it has a transfer rate from disk cache to host of 40Mb/s which is consistent with it being a 16bit Ultra Wide SCSI.

<A HREF="http://www.anandtech.com/myanandtech.html?member=114979" target="_new">My PCs</A> 😎

 

[RamaV]

Muchos Gracias !
( Much Grassy Ass ! )


A really big help


Thanks, RamaV

" He who (BLEEPS) nuns, will later join the church " Joe Strummer, The Clash - "Death or Glory"