U160 x HD68 case rear connector NEEDED, connects to U160 ribbon -and-HD68 outside, what's it CALLED?

  • Thread starter Thread starter dave
  • Start date Start date
D

dave

hi guys

building (actually modifying an old server case) to hold four 7200 RPM
181gb seagate SCSI drives. one of two items I'm short is the "case rear
connector", the one the U160 internal ribbon end connects TO, and that
same connector "goes thru the hole in the steel" and on the outside it
has the HD68 connector, for plugging in the external SCSI cable. (also
need the external SCSI cable, HD68 at both ends, but that ought'a be
easier to find :-)

the BIG question is: what's that "case rear connector" more properly
referred to as 'in the trade'? or, in other words, how would I search
for it in google, or on ebay? or is there a 'standard amphenol number'
or something for this item?

thanks bunches for info,

toolie

- -
replies by e-mail, if any, should please remove the weirdstuff from my
address before you click 'send' - thanks :-)
- -
 
In most cases(situations) that I have had with scsi is the controller card
has an internal and extrenal connector. Even My old MAC is setup that way.
The Two datadocks I have are connected through a 'patch' cable between the
drives and the external connector. I have a 53C810 symbios 8100s in this
rig and its the same thing 1 external 1 internal ribbon connector. If there
is such a connector on the outside of the case in question, It may have
belonged to a particular main board. What controller are you going to use?
 
dave said:
hi guys

building (actually modifying an old server case) to hold four 7200 RPM
181gb seagate SCSI drives. one of two items I'm short is the "case rear
connector", the one the U160 internal ribbon end connects TO, and that
same connector "goes thru the hole in the steel" and on the outside it
has the HD68 connector, for plugging in the external SCSI cable. (also
need the external SCSI cable, HD68 at both ends, but that ought'a be
easier to find :-)

the BIG question is: what's that "case rear connector" more properly
referred to as 'in the trade'? or, in other words, how would I search
for it in google, or on ebay? or is there a 'standard amphenol number'
or something for this item?

thanks bunches for info,

toolie

- -
replies by e-mail, if any, should please remove the weirdstuff from my
address before you click 'send' - thanks :-)
- -
Click to expand...

On this site, the necessary keywords seem to be "panel mount". They have
some PCI slot covers, for the panel mount connector to fit onto.

http://www.cs-electronics.com/68-pin-ribbon.htm

Paul
 
I beleive what you're referring to is a cable that came boxed with some SCSI
cards as well as with some motherboards that had built-in SCSI.

It's a one-piece cable that has a connector on one end that either plugged
into a MB SCSI connector or into one of the internal SCSI connectors on a
SCSI card. The other end of the cable terminates into a SCSI connector that
mounts in it's own back panel slot-blank.

I happen to have two of the cables that came with Adaptec SCSI cards that
are 50-pin cables. The internal card connector is a standard 50-pin IDE type
connector, the connector on the other end that mounts as a slot-blank at the
rear of the case is a HD-50 pin connector.
On that cable (FWIW) is a label that says..
Made in USA
497768-00
Rev. A
Ultra SCSI

I have two other cables that I believe were used on older ASUS MB's that had
on-board Ultra2 SCSI. These cables have a 68-pin D-connector on the MB end,
and end up at the slot-blank end in a HD 68-pin connector.

In addition to these seperate cables, most SCSI cards come with a rear panel
connector or varying sizes that is on the SCSI card itself.
 
hdrdtd said:
I beleive what you're referring to is a cable that came boxed with some SCSI
cards as well as with some motherboards that had built-in SCSI.
Click to expand...
thanks guys.

I'm not really referring to a cable. I just want an external SCSI case
"case rear connector". I'm guessing 'all' external wide SCSI device
cases would have this sma e connector on their rear side (but I'm just
guessing, really)

these new pix should make it clear what I need.

I need the interior side of my backplane connector to look like this, in
order to connect to my U-160 ribbon:
http://www.phosted.com/x11/interior.jpg

and the exterior side of the very same connector would need to look like
this, in order to connect to a normal external HD68 male SCSI cable
http://www.phosted.com/x11/exterior.jpg

since my AHA-29160 card hasn't arrived yet, *and* since there just
aren't -any- good clear pictures of their connectors online: do the
external connectors on ALL adaptec AHA-29160 cards have this "screw
fasten" type connector? and how come some SCSI cables have 'clips' and
some have 'screws'? they're not 'quite readily exchangeable' or are they?
http://www.phosted.com/x11/ASC-29160.jpg

I'll be needing to plug the UPPER connector (in this pic) into the
INterior side of my "yet to be aquired" SCSI backplane connector. what
-type- connector IS this, though? is there some "standard industry name"
for it?
http://www.phosted.com/x11/ribbon01.jpg

here's my U-160 cable. the smaller ends plug to the four drives, and
when I dismantled the server, the connector closest to the terminator
was plugged to the motherboard (which I assume was a "SCSI on board"
mobo). that'd mean I'll be needing to plug that SAME end to my 29160,
"routed first through" an external roundie-type SCSI cable, the way I
have it planned
http://www.phosted.com/x11/ribbon04.jpg

thanks again, guys :-)

toolie
 
OK, the pictures came in handy.

From what I understand, you have two boxes.

1st box (old server case?) contains the SCSI HD's, which have a 68pin
connector on them.
2nd box (your PC?) is where the SCSI card you have on order will go.

What you need is whatever cable/connector combinations required to go from
the back of the drives, to the rear panel of the HD box, then the
appropriate external cable to connect the external connector on the HD box
to the rear of the SCSI card in the PC.

Did I guess that right more or less?

The picture of the cable (ribbon04.jpg) is the cable that normall goes
between the SCSI card and the HD's with the terminator end attached to the
furtherest HD. Thats the cable that you would want to go from the HD's and
the other end, terminate at the rear panel in a HD68 connector. Then you
would use typically, a HD68 to HD68 external cable to go between the HD box
and the PC box.

So far so good?

In that case, the cable that goes from the HD's to the rear of the HD box,
does not 'plug into' a connector at the back of the box, instead, the rear
connector is crimped/soldered to the end of the cable itself.

This type of cable, you would normally purchase from a company that builds
external SCSI enclosures.

Perhaps this is what you're looking for?
http://www.scsi4me.com/product_info.php?cPath=4_8&products_id=997


Here's one place that specializes in premium SCSI cables and will also
custom build any type of SCSI cable you'd like with any ends on any type of
cable. They're not cheap, but they are the best in the business, and trust
me, there is no subsitute for quality SCSI cables.

http://www.granitedigital.com/catalog/indx_scsi.htm
 
you guys are tremendously helpful paul, jad, and especially htrdtd -
thanks much. I think I "pretty much" understand things now, but let me
run this last "crude layout plan" past you guys

as it stands now:

adaptec AHA-29160 PCI card plugs into my motherboard

that adaptec card, @rear of my tower case, connects to

external SCSI cable, the ends of which will look like
http://www.phosted.com/x12/HD68_screws.jpg
(with HD68 males on both ends, though it won't be nearly as ugly as this
one :-)

other end of the external cable will connect to outside rear of my
Planned External SCSI Enclosure (let's call it "PESE") to this "short
adapter" mounted through and fastened to the case rear. that thing looks
like
http://www.phosted.com/x12/short_adapter.jpg

the the same short adapter thing, inside the rear of my PESE, connects
to the -left- end of this U-160 ribbon cable
http://www.phosted.com/x12/ribbon3.jpg

and that ribbon cable is then "plugged into" each of the four hard
drives, positioned like
http://www.phosted.com/x12/ribbon3.jpg
and, finally,

the ribbon has the terminator (shown attached to cable right end) at its
end (past the last drive, drive four, furthest from the adaptec)

= =

last questions:

assuming good hard drives, ASPI layer current and installed correctly,
card driver installed correctly, good power supplies and fans, etc, is
the "basic physical layout" outlined above workable for an LVD U-160
four drives setup?

if it's NOT workable, what've I overlooked?

there shouldn't be any problem formatting SCSI drives NTFS?

and, the big mystery:

I'd prefer my external SCSI cable has "screw connections" at both ends,
but this short "internal to external adapter" thing appears to have both
clip-ability AND screw-cable fastenability. looks like this exactly
http://www.phosted.com/x12/short_adapter_blowup.jpg

is the "center to center distance" of the "hex screw towers" on the
"short adapter thing" ordinarily the *same* as the center distance
between screws on a basic HD68 external SCSI cable? -or- maybe they're
"too far apart to -use- the 2 cable thumbscrews"? see pic
http://www.phosted.com/x12/screw_centers2.jpg

and: because there's a terminator at the end of the U-160 ribbon inside
my PESE (instead of that end being fastened to a SECOND "case rear" HD60
port), this PESE allows no further expansion (on that particular chain)
past the terminator on the U-160 ribbon, right?

and i DO need to USE thie terminator shown on the end of this ribbon for
LVD, right? or?

and the adaptec card ITSELF either IS (or contains) "onboard" a
terminator for THAT end of the chain, right?

thanks again, you guys have taught me a lot, and I appreciate it :-)

toolie
 
Perfect .

You have everything figured out just fine.

With regards to external SCSI cables, there are two types, one style uses
clips, some use screws.

The connects you have on both the SCSI card and on the mini-adapter will
work with both types of cables.

The number of hard drives you can use is limited by the number of connectors
on the cable up to a maximum of 14 drives.

Each device uses a SCSI ID from 0 (usually assigned to the boot drive) up to
15, but the card itself usually uses #7 leaving 0-6 and 8-15 avaialable for
various SCSI devices.
 
Back
Top