Priam 7050 Hard Drives and Apollo DN300 shoeboxes

Priam 7050 Hard Drives and Apollo DN300 shoeboxes

Post by James S. Ve » Sun, 31 Mar 1991 13:27:10



I recently began a search for facts about the hard drives in our
Apollo DN300 shoeboxes.  After much search I am reporting back on
what (little) I have learned.

First off the hard drive in my shoebox is a Priam 7050-41.  As many of
you know Priam is not quite what it used to be and it turns out that a
company called Sequel (sp?) +1.408.987.1533 now handles the drives.
Joe Grove in technical support told me the following:

        Drive           Interface
        -----           ---------
        7050-11         Priam Proprietary
        7050-21         SMD
        7050-41         ANSI X3.101

Kathy in Sales said she would sell me the interface board to change my
7050-41 to a 7050-21 for $500 and she seemed willing to deal (maybe
$250). [if for some reason I was dieing for a small SMD drive the
Minicomputer exchange sells an unused 84MB drive for $125].

Closure:
1) Unless it turns out that ANSI X3.101 to anything-useful converters
these drives are probably boat anchors.
2) The rumor that the drives are ST-506 compatable is unfortunately
almost certainly wrong.
3) Someone on the net sent me a list of the pin outs for the drive
which he obtained from some Apollo literature.  The pin outs did not
exactly match the pin outs in the ANSI X3.101 literature. (Why? I dont
know).

Thats all I know.

--
James S. Vera      |         Internet           |Standard Disclaimers


I am an ASSU Graduate Senator, Engineering & Earth Sci.  Be Suspicious!

 
 
 

1. PRIAM Harddrive 806-11 (SASI?) and PRIAM Datatower

Ok, I think this really is my newsboard to read.

Since I use a lot of old stuff (for the price) I came across some PRIAM
Harddrives (8"). These were built into the PRIAM Datatower which could
be connected to an ISA PC (8-Bit-card). All this seems very propietary.

I disassembled the Datatower and found a Streamer (Archive 9045L, also
called Sidewinder) and a 8" Harddisk manufactured by PRIAM in about 1984.

The  Drive is a 806-11 (I also got a 807-11).
I know about the parameters (cyls, heads, sectors) but I don't know
about the interface. From rumors and al what I read in this newsboard
it seems to me that this drive is working with a SASI interface (as well
as the Streamer I assume).

I really hope that there is someone out there that knows some more about
the drive (it still has an interesting size: 160 MB for the 806-11 and
290 MB for the 807-11, both with 11 heads).

And, if possible, does anyone know about a controller for the SASI inter-
face that will work with the ISA-Bus PC stuff and that I will be able to
use under DOS and/or UNIX (XENIX, EXIX, whatever) ?

The drives themselves have a 50-pin-connector. But the whole thing looks
like some mor:

PC --> 8-Bit-card -> cable -> Datatower internal controller
                                        |       |
       Streamer  <----  Streamer  <-----|       |-----> Disk
       9045L            controller                      806-11
       (Archive)                                        (Priam)

There are drivers provided for DOS (also a Rom like in old XT-controllers)
And OS/2 can also access the first disk, but when it comes to the
second one I really have to use DOS 3.3.
And no 386/486 UNIX can access the disk (as far as I know because it is
not an 16-Bit controller).

If anybody knows someting about this (or knows someone who knows someone
who knows something) I would be very thankful if I could get as much
information as possible. I have tried to call Priam or companies that
took over Priam products since a year now (and a call from Germany is not
cheap) but nobody could help me so far.

So go ahead all you cracks and hardware specialists and. PLEASE, help
me to get these drives working with a (standard ?) controller.

Thanks again

Matthias

(If this is gonna work, I can get hold of another 2 Datatowers for
a reasonable price............ and can start to dig into RAID and
striped devices............)

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