[rescue] Re: DSBE/S

[Leslie Connally]

Joshua-

A- Differential and Single-Ended are quite definitely DIFFERENT. The main
point being that Differential sends signals by varying voltages..
differential between voltages.. and these voltages are very very bad for SE
Differential is secretly called High-Voltage-Differtial, vis-a-vis modern
LVD.. Low-Voltage-Differential.. LVD can live with SE.. HVD ("Old
Differential" cannnot)

B- Yes (I was jsut researching this myself.. the RSM-2xx chassis (as well
as the D1000 & A1000) uses a Differential I/O ((Fast-Wide-Differential
(68-pin)) to the host ((but converts this to SE internally.. and uses plain
SE drives

C- eBAy sellers sledom know what they are talking about

D- You will need a 68-pin controller.. sorry I dont know if the DSBE/E is
68-pin..

E- try www.sunstuff.org.. a GREAT resource for hardware info !!!!!

F- Differntial looks like <<-  the double bracket is the key

G- Differential is NOT always 68-pin wide.


>>From: Joshua D Boyd <jdboyd at cs.millersville.edu>
>>Subject: [rescue] DSBE/S
>>
>>Differential SCSI/Ethernet.
>>
>>This is what I need for the RSM-214, right?  After hitting buy it now, I
>>noticed that the seller describes it as a 68pin narrow single ended
>>differential controller.  The associated picture shows the card with the
>>words differential scsi above the 68pin plug, but the logo next to the
>>words doesn't look like the normal differential logo.
>>
>>Seller also says "Part Number(501-1902)/Kit Number X1052A"
>>
>>So, the handbook says that it is a differential scsi/ethernet card, and not
>>much else.
>>
>>Now, my understing is that differential is always wide, and differential
>>and single ended are mutually exclusive.  Did I just do something stupid?
>>
>>--
>>Joshua D. Boyd