7 Aug
2007
7 Aug
'07
1:55 p.m.
Well, I did some checking, and my one vax does _not_
have an Emulex ESDI controller - it's a Dilog. I
downloaded the manual from Bitsavers. I'm going to
start playing with it and see if I can get it to
format some of these spare ESDI disks.
One disk I have a couple of is this IBM drive. It's
labeled as "P/N 90X8528 70MB ESDI", and on the side as
"Type: 0667". Googleing has turned up little, although
I found some info on cyls/heads/sectors. There is a
block of dip switches on the drive, and it would be
nice to figure out what they do...
-Ian
7 Aug
7 Aug
3:19 p.m.
--- Mr Ian Primus <ian_primus at yahoo.com> wrote:
Well, I did some checking, and my one vax does _not_
have an Emulex ESDI controller - it's a Dilog. I
downloaded the manual from Bitsavers. I'm going to
start playing with it and see if I can get it to
format some of these spare ESDI disks.
One disk I have a couple of is this IBM drive. It's
labeled as "P/N 90X8528 70MB ESDI", and on the side
as
"Type: 0667". Googleing has turned up little,
although
I found some info on cyls/heads/sectors. There is a
block of dip switches on the drive, and it would be
nice to figure out what they do...
I guess I answered my own question - and that is that
I don't need to know... After a lot of fiddleing with
the Dilog controller in the Vax (had to put it into
another Qbus slot) I was able to get into the disk
formatter via the instructions in the manual. It works
perfectly, and sees the disk automatically, and I was
able to format it and test it. Of course, since I'm
using the existing cable, it shows up as the second
disk - but I can use the "twisted" PC clone control
cable to set it as the first disk.
Still, it would be nice to change the setting on the
drive (without taking the board off and tracing
switches back to drive select pins)
-Ian
3:47 p.m.
On Tuesday 07 August 2007, Geoff Reed wrote:
Do you have pics of it? It might help identify who
actually made the
drive for IBM.
"IBM" is probably the answer to that question.
Pat
--
Purdue University Research Computing --- http://www.rcac.purdue.edu/
The Computer Refuge --- http://computer-refuge.org
4:01 p.m.
Quoting Patrick Finnegan <pat at computer-refuge.org>:
On Tuesday 07 August 2007, Geoff Reed wrote:
not always, the 310 MB ESDI drive IBM sold was a relabeled Maxtor XT-4380E with
a specific revision of the on drive electronics.
Do you have pics of it? It might help identify
who actually made the
drive for IBM.
"IBM" is probably the answer to that question.
Pat 
6:20 p.m.
Geoff Reed wrote:
Quoting Patrick Finnegan <pat at
computer-refuge.org>:
That doesn't apply to the drives that had an IBM "type number".
This drive is "Type 0667". Made by IBM.
Peace... Sridhar
On Tuesday 07 August 2007, Geoff Reed wrote:
not always, the 310 MB ESDI drive IBM sold was a relabeled Maxtor XT-4380E with
a specific revision of the on drive electronics. Do you have pics of it? It might help identify
who actually made the
drive for IBM.
"IBM" is probably the answer to that question.
Pat
6:31 p.m.
Quoting Sridhar Ayengar <ploopster at gmail.com>:
ah... didn't know that
not always,
the 310 MB ESDI drive IBM sold was a relabeled Maxtor
XT-4380E with
a specific revision of the on drive electronics.
That doesn't apply to the drives that had an IBM "type number".
This drive is "Type 0667". Made by IBM.
Peace... Sridhar
3:55 p.m.
Apparently the 70 MB Esdi drive is also called an E70?
I found the following at
http://www.uni-giessen.de/faq/archiv/ibm-rt-faq.hardware/msg00000.html
* The E70 and E114 hard drives use a 150 Ohm inline resistor.
It has pin one as the common pin, and has 12 total leads.
This is NOT documented ANYWHERE that I could find!
* Switch settings for E70 and E114 hard drives.
For RT installation, the switches must be as follows:
1 2 3 4 5 6
+------------------+
On | X X X |
Off | X X X |
+------------------+
- Eliot <eliot at engr.washington.edu>
reports that the switch meanings are:
switch
1: on = pwr up via software (factory default)
off = pwr up with system
2: on = diags (factory default)
off = ?
[ My guess.. since on is the RT normal position,
then off must activate diagnostic mode. - MW]
3: on = 512 byte sectors (factory default)
off = 256 byte sectors
4,5,6: drive select in binary
i.e. 4 off 5 on 6 off = drive select 2
6:18 p.m.
Mr Ian Primus wrote:
Well, I did some checking, and my one vax does _not_
have an Emulex ESDI controller - it's a Dilog. I
downloaded the manual from Bitsavers. I'm going to
start playing with it and see if I can get it to
format some of these spare ESDI disks.
One disk I have a couple of is this IBM drive. It's
labeled as "P/N 90X8528 70MB ESDI", and on the side as
"Type: 0667". Googleing has turned up little, although
I found some info on cyls/heads/sectors. There is a
block of dip switches on the drive, and it would be
nice to figure out what they do...
http://www.hitachigst.com/
They bought Adstar a while ago, which was IBM's media-manufacturing
division. Look for the big master table of all hard disks they ever
made at Hitachi's website.
Peace... Sridhar
7:41 p.m.
Sridhar Ayengar wrote:
Mr Ian Primus wrote:
Is there any country of origin on the 667? There was a division in
Havant that manufactured drives in this time frame, that IBM sold to the
plant managers, that is now Xyratex.
They made disk products for IBM for several years which evolved up thru
the SSA interface on RS6000's when the contract expired. They now make
raid systems after a number of gyrations into other businesses, such as
video, fibre channel, and disk manufacturing equipment sales.
Jim
8:05 p.m.
jim wrote:
Sridhar Ayengar wrote:
If memory serves, those series were made in several different places,
including California and Mexico. Probably one or two other places too.
Peace... Sridhar
Mr Ian Primus wrote:
Is there any country of origin on the 667? There was a division in
Havant that manufactured drives in this time frame, that IBM sold to the
plant managers, that is now Xyratex.
6345
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10 comments
5 participants
participants (5)
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geoffr＠zipcon.net -
ian_primus＠yahoo.com -
jwstephens＠msm.umr.edu -
pat＠computer-refuge.org -
ploopster＠gmail.com