14" Hard Drive Multi Platter ex NCR Criterion V-85xx

[Schmittchen]

Hi

In the 80's and 90's I worked on a NCR Criterion V-85xx Machine, which used an external disk drive storage with 12 platters of 14".

Since it was taken out of service I'm using it on my desk as a reminder of old times (to heavy for paperweight ).
I'm unsuccessfully searching all around in the net.

Does anybody know what type of disk it could be ?

Thanks for your help.
Best regards
Thomas

 

[Chuck(G)]

Looks like a CDC 9766 to me (MPI was a joint project run by CDC between CDC, NCR and Honeywell, so you'll see CDC drives on all three system brands.

Look in bitsavers for more information.

 

[Al Kossow]

looks like the module out of an FMD drive

http://bitsavers.org/pdf/cdc/discs/fmd

14" fixed MPI drives weren't as common as the later smaller platter drives

 

[Chuck(G)]

Al's mostly likely correct; I just took a look and counted disk surfaces in the last photo; didn't bother looking at the others.

 

[Schmittchen]

Hello Chuck, hello Al
Thanks a lot for your answers and tips. It really looks like the fmd disk, even if the housing of the whole disk assembly looked different. Probably the housing was from NCR.
I have to search for photos. Somewhere I have a few of them.
In the net I found the attached photo, which is very similar to the disk of mine, with the difference, that here one has removed the cover disk on the top …

 

[Schmittchen]

Ok, here's the housing of my disk platter.
Looks similar to an IBM 3350.

 

[Schmittchen]

Hi Chuck, hi Al

I found further informations at CDC (Control Datas Corporation):
The "CDC 9775 Head Disk Assembly" looks exactly like mine.
And the "CDC Fixed Module Drives" ex Brochure 1980 looks almost exactly like the NCR housings.
They are obviously a product of the joint venture between CDC and NCR.
NCR had the 6550 disk packs as fixed modules. This could be the original NCR name.

I think I'm close to the goal now.
Don't you think so?