Two Hard Drives on Z-241?

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4 total messages Started by Randy Seynaeve Mon, 04 Dec 1989 06:11

#89

Author: Randy Seynaeve
Date: Mon, 04 Dec 1989 06:11

12 lines
1045 bytes

I finally got tired of running out of disk space on my Z-241 computer
so I purchased a new ST-4096 to supplement my old reliable ST-4038.
Problem: Both drives work fine separately, but when I hook them both
up together my system has problems (ie. out to lunch).  I went through
numerous iterations of removing resistor packs, putting on resistor
packs, new cables, etc. with no luck.  During my college days I recall
someone else having the same problem with their Z-241 when trying to 
add a second drive.  I don't recall them having any success.  Has 
anyone else run into this problem, or is just my system?

Thanks,
Randy Seynaeve

Re: Two Hard Drives on Z-241?

#101

Author: Usenet file owner
Date: Tue, 05 Dec 1989 13:10

30 lines
1863 bytes

In article <3520003@hpspcoi.HP.COM> randy@hpspcoi.HP.COM (Randy Seynaeve) writes:
>I finally got tired of running out of disk space on my Z-241 computer
>so I purchased a new ST-4096 to supplement my old reliable ST-4038.
>Problem: Both drives work fine separately, but when I hook them both
>up together my system has problems (ie. out to lunch). 

I don't have a 241, but I ran into a problem when adding a 4038 to
my Z-100.  If both drives work fine by themselves, I suspect that
you have to change a jumper that tells the drive which unit it 
is.  Probably, both are set to  "0" since they each work fine alone.
Set the jumper for the new drive to the "1" position.  Use SETUP
to tell the 241 what drive is there.

My 4038 didn't come with documentation on this.  As I recall, the 
jumpers are near the bottom on the rear of the drive.  There is 
a set of 4 pairs of jumpers.  Probably, the jumper is on an end
pair (0); try moving it over to the next pair.

Disclaimer:  It's been three years since I did this and I don't
have documentation in front of me.  Not responsible for smoke & other
nastiness.

Mark Urban-Lurain                        urban@cpswh.cps.msu.edu
Computer Science Dept.                   urbanluraimg@clvax1.cl.msu.edu
Michigan State University
A-714 Wells Hall                         (517) 353-0682   office
East Lansing, MI     48824               (517) 355-5210   department

Re: Two Hard Drives on Z-241?

#105

Author: Stefan Brandle
Date: Wed, 06 Dec 1989 16:20

19 lines
1451 bytes

In article <3520003@hpspcoi.HP.COM> randy@hpspcoi.HP.COM (Randy Seynaeve) writes:
>I finally got tired of running out of disk space on my Z-241 computer
>so I purchased a new ST-4096 to supplement my old reliable ST-4038.
>Problem: Both drives work fine separately, but when I hook them both
>up together my system has problems (ie. out to lunch).  

Somebody tried adding an ST-4096 to one of our Z386 machines and ran into
problems.  After getting helpful vendor suggestions (like buy our hard disk
instead, it cost 3x as much but will work nicely) we called Seagate and they
said to pull some jumper on the ST-4096 (something to do with timing) and lo
and behold, it worked like a charm.  Unfortunately, I don't have the
information available.  Call Seagate.

-sb
-- 
---------------------------------------------- MA Bell: (708) 260-5019 ---------
Stefan Brandle                  UUCP: ...!{obdient,uunet!tellab5}!wheaton!stefan
Wheaton College			or	stefan@wheaton.UUCP
Wheaton, IL 60187 		"But I never claimed to be sane!"

Re: Two Hard Drives on Z-241?

#108

Author: Randy Seynaeve
Date: Wed, 06 Dec 1989 18:49

21 lines
1518 bytes

> I don't have a 241, but I ran into a problem when adding a 4038 to
> my Z-100.  If both drives work fine by themselves, I suspect that
> you have to change a jumper that tells the drive which unit it 
> is.  Probably, both are set to  "0" since they each work fine alone.
> Set the jumper for the new drive to the "1" position.  Use SETUP
> to tell the 241 what drive is there.

> My 4038 didn't come with documentation on this.  As I recall, the 
> jumpers are near the bottom on the rear of the drive.  There is 
> a set of 4 pairs of jumpers.  Probably, the jumper is on an end
> pair (0); try moving it over to the next pair.

The documentation that came with the system said that both hard drives
need their jumpers set to device select 2 (third position).  The
twist in the 34 wire flat cable decodes which control signal goes
to which drive.

The documentation also didn't mention anything about removing resistor
packs.  Does anybody know if this is necessary?  The doc says something
about removing the pack when adding a second floppy, but nothing about 
what to do on a second hard drive.

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