| Author |
Message |
Xerxes409
Guest
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 Posted:
Sun Nov 21, 2004 4:42 pm Post subject:
Need help hooking up old SCSI drives |
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Hi all,
I need to mount one (of two) old SCSI hard disks inside an external
case so I can use it alongside my old Apple IIGS. The plus side is I
have a Seagate and a Quantum ready for use; the bad side is I have
zero idea where to hook up the two wires for termination and the
power/read LEDs. Despite the fact that the pinouts are printed on the
drive itself, I am too stupid to figure them out (hangs head in
shame).
However, I took pictures and put 'em here:
http://www.tokyopia.com/colin/oldhdds/thumbs_d/thumbs_p.html
Can someone tell me just where (and IF it's possible to) to stick the
two sets of cables? I really do need to be able to manually set
termination because it's gonna be one of several devices on a chain.
An old Apple II nerd thanks you kindly.
Colin |
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Greg Buchner
Guest
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| Posted:
Sun Nov 21, 2004 7:43 pm Post subject:
Re: Need help hooking up old SCSI drives |
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In article <427af823.0411210342.6406f46@posting.google.com>,
colin_tokyo@hotmail.com (Xerxes409) wrote:
| Quote: | Can someone tell me just where (and IF it's possible to) to stick the
two sets of cables? I really do need to be able to manually set
termination because it's gonna be one of several devices on a chain.
An old Apple II nerd thanks you kindly.
|
OK, first, the two sets of three in img_0981.jpg are for the SCSI ID,
not termination. From the looks of it, you'd actually use both sets of
connectors to the SCSI ID section on the drive. One connector is the
common, the other selects the various ID combos of 1/2/4. It can be a
PITA to set that up right and I just always use jumpers to set the SCSI
ID directly on the drive. It seems to be a more certain way to make
sure the ID is set to what you want so there won't be any conflicts.
If you wanted to hook up those cables for the SCSI ID, with the two
drives you've shown you could only do it on the Seagate. Those two
connectors would go on the 4 2 1 / ADDR connectors on J6 (from
img_0985.jpg). I do not know which way they'd go and you'd have to
experiment.
Second, the Quantum Atlas II 3.5 series drive doesn't look like a normal
SCSI drive that a GS could handle. It's talking about differential on
the drive and while I've never dealt with that, I have a friend who has.
You either have to have a SCSI card that can handle differential drives
or you need an adapter to go to normal SCSI. I do not know what the
difference is off the top of my head. You could maybe google the info.
Third, if you're planning a SCSI chain, the best thing to do for
Termination would be to have an external terminator. That way you could
always move it to the end.
Greg B.
PS. Don't worry about SCSI being confusing...it is at first. Once you
get the hang of it, things usually go pretty well. Also note that there
is a term floating around the net called SCSI Voodoo. SCSI can be a
royal PITA to set up and if you google deep enough, you'll find
recommendations about sacrificing small animals under the full moon to
get it work correctly. ;-)
--
There's just one 2 in my e-mail address, so delete one to e-mail me. |
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Lyle Syverson
Guest
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| Posted:
Sun Nov 21, 2004 10:39 pm Post subject:
Re: Need help hooking up old SCSI drives |
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|
On Sun, 21 Nov 2004, Xerxes409 wrote:
| Quote: | I need to mount one (of two) old SCSI hard disks inside an external
case so I can use it alongside my old Apple IIGS. The plus side is I
have a Seagate and a Quantum ready for use; the bad side is I have
zero idea where to hook up the two wires for termination and the
power/read LEDs. Despite the fact that the pinouts are printed on the
drive itself, I am too stupid to figure them out (hangs head in
shame).
|
Go to
http://lamp.a2central.com/
Refer to the "The Tinkerer's Corner" in the August 2002 issue of
_The Lamp!_ for information on the use of SCSI hard drives with
the Apple IIgs. Select a file named TLMP0208
Also see the article "Controlling the SCSI ID of Hard Drive" in
the January 2002 issue of _The Lamp!_ . Select a file named TLMP0201
Lyle Syverson <lyleREMOVE@FoxValley.net> Editor, _The Lamp!_
published monthly at: http://lamp.a2central.com/ |
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Wayne Stewart
Guest
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| Posted:
Mon Nov 22, 2004 12:42 am Post subject:
Re: Need help hooking up old SCSI drives |
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As Greg said, the Atlas II would need an adapter to work with a IIgs.
I don't know which Seagate drive and which SCSI card you have and that
might be of inportance as some incompatibilities do exist.
For the Seagate
For SCSI ID you can use jumpers or if they'll fit the pins you can
use the connectors in pic 0891. In either case the SCSI id pins are
the three right hand sets in Img_0986. If this is your only drive
then SCSI id 6 is your best setting. To get SCDI id 6 jumper the
second and third from right in Img_0986.
As Greg mentioned, it's usually more convenient to have to have an
external SCSI terminator. If you're going to do that you should pull
the termination jumper. It's located on a srip of pins on the bottom
of this Seagate drine and should have the letters te beside it.
Wayne |
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Folkert Rienstra
Guest
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| Posted:
Tue Nov 23, 2004 4:49 am Post subject:
Re: Need help hooking up old SCSI drives |
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"Wayne Stewart" <waynes@telus.dotnet> wrote in message news:cc6od.198344$9b.80763@edtnps84
| Quote: | As Greg said, the Atlas II would need an adapter to work with a IIgs.
|
Are you a parrot?
Only if it is a HVD version, recognizable by a D suffix on the model number.
| Quote: | I don't know which Seagate drive and which SCSI card you have and that
might be of inportance as some incompatibilities do exist.
For the Seagate
For SCSI ID you can use jumpers or if they'll fit the pins you can
use the connectors in pic 0891. In either case the SCSI id pins are
the three right hand sets in Img_0986. If this is your only drive
then SCSI id 6 is your best setting. To get SCDI id 6 jumper the
second and third from right in Img_0986.
As Greg mentioned, it's usually more convenient to have to have an
external SCSI terminator. If you're going to do that you should pull
the termination jumper. It's located on a srip of pins on the bottom
of this Seagate drine and should have the letters te beside it.
Wayne |
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Folkert Rienstra
Guest
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| Posted:
Tue Nov 23, 2004 4:56 am Post subject:
Re: Need help hooking up old SCSI drives |
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"Greg Buchner" <apple22@mn.rr.com> wrote in message news:apple22-9853C7.08403521112004@apollo-ge0.rdc-kc.rr.com
| Quote: | In article <427af823.0411210342.6406f46@posting.google.com>,
colin_tokyo@hotmail.com (Xerxes409) wrote:
Can someone tell me just where (and IF it's possible to) to stick the
two sets of cables? I really do need to be able to manually set
termination because it's gonna be one of several devices on a chain.
An old Apple II nerd thanks you kindly.
OK, first, the two sets of three in img_0981.jpg are for the SCSI ID,
not termination. From the looks of it, you'd actually use both sets of
connectors to the SCSI ID section on the drive. One connector is the
common, the other selects the various ID combos of 1/2/4. It can be a
PITA to set that up right and I just always use jumpers to set the SCSI
ID directly on the drive. It seems to be a more certain way to make
sure the ID is set to what you want so there won't be any conflicts.
If you wanted to hook up those cables for the SCSI ID, with the two
drives you've shown you could only do it on the Seagate. Those two
connectors would go on the 4 2 1 / ADDR connectors on J6 (from
img_0985.jpg). I do not know which way they'd go and you'd have to
experiment.
Second, the Quantum Atlas II 3.5 series drive doesn't look like a normal
SCSI drive that a GS could handle.
|
Of course it can, unless it is the HVD version, recognizable by a D suffix on the model number.
| Quote: | It's talking about differential on the drive and while I've never dealt
with that, I have a friend who has.
You either have to have a SCSI card that can handle differential drives
or you need an adapter to go to normal SCSI.
|
Only for High Voltage Differential SCSI drives.
That (common ATLAS II) label is not proof that it is such a drive,
it merely indicates that there is such a version also available.
| Quote: | I do not know what the difference is off the top of my head.
You could maybe google the info.
|
[snip] |
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Greg Buchner
Guest
|
| Posted:
Wed Nov 24, 2004 9:03 am Post subject:
Re: Need help hooking up old SCSI drives |
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In article <30fs6aF2u6qeoU2@uni-berlin.de>,
"Folkert Rienstra" <see_reply-to@myweb.nl> wrote:
| Quote: | Second, the Quantum Atlas II 3.5 series drive doesn't look like a normal
SCSI drive that a GS could handle.
Of course it can, unless it is the HVD version, recognizable by a D suffix on
the model number.
It's talking about differential on the drive and while I've never dealt
with that, I have a friend who has.
You either have to have a SCSI card that can handle differential drives
or you need an adapter to go to normal SCSI.
Only for High Voltage Differential SCSI drives.
That (common ATLAS II) label is not proof that it is such a drive,
it merely indicates that there is such a version also available.
I do not know what the difference is off the top of my head.
You could maybe google the info.
|
I thought that Differential drives required a specific controller or an
adapter. Never saw anything that specified otherwise.
Greg B.
--
There's just one 2 in my e-mail address, so delete one to e-mail me. |
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Xerxes409
Guest
|
| Posted:
Wed Nov 24, 2004 11:04 am Post subject:
Re: Need help hooking up old SCSI drives |
|
|
Thanks for the help everyone -- hopefully I'll have this up and
running in a day or so!
CW
Wayne Stewart <waynes@telus.dotnet> wrote in message news:<cc6od.198344$9b.80763@edtnps84>...
| Quote: | As Greg said, the Atlas II would need an adapter to work with a IIgs.
I don't know which Seagate drive and which SCSI card you have and that
might be of inportance as some incompatibilities do exist.
For the Seagate
For SCSI ID you can use jumpers or if they'll fit the pins you can
use the connectors in pic 0891. In either case the SCSI id pins are
the three right hand sets in Img_0986. If this is your only drive
then SCSI id 6 is your best setting. To get SCDI id 6 jumper the
second and third from right in Img_0986.
As Greg mentioned, it's usually more convenient to have to have an
external SCSI terminator. If you're going to do that you should pull
the termination jumper. It's located on a srip of pins on the bottom
of this Seagate drine and should have the letters te beside it.
Wayne |
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Michael Squires
Guest
|
| Posted:
Wed Nov 24, 2004 2:19 pm Post subject:
Re: Need help hooking up old SCSI drives |
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|
In article <apple22-29689E.22030923112004@hermes-ge0.rdc-kc.rr.com>,
Greg Buchner <apple22@mn.rr.com> wrote:
| Quote: |
I thought that Differential drives required a specific controller or an
adapter. Never saw anything that specified otherwise.
|
There are HV differential and LV differential.
The Atlas II is available in a HVD version; I own three of them. They work well
with the Adaptec 2944U/UW or the LSI HVD controller; the latter is on eBay all
the time for under $20.
Mike Squires
--
Mike Squires (mikes at cs.indiana.edu) 317 233 9456 (w) 812 333 6564 (h)
mikes at siralan.org 546 N Park Ridge Rd., Bloomington, IN 47408 |
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