...
   IBM had DASD
(anyone pronouce it?); CDC had RMS.  Crossing between
 the two cultures could be very confusing. 
    I say "dazzdee".  I've never heard anyone say "Dee Ay Ess
Dee". 
 
It's mostly been Dazz Dee for me;
however, occasionally I have heard or said Dee Ay Ess Dee
How about IBM's CKD - always "See Kay Dee"?
BTW, did anyone else use CKD (other than PCMs), perhaps RCA (who arguably
was a PCM+)?
And was the 3390-3 the last CKD DASD?
Tom