wrote in message
...
On Sun, 18 Jan 2009 18:04:07 -0800, "Calif Bill"
wrote:

First disk drives I worked on were 5 platter, 14" 5 mbyte units.
2311s? They were the 360 version of the 1401 era 1311. Same basic pack
but double density,

I was an NCR guy. Our own drives. We replaced a 360 ,mod 20 at Macys with
an NCR 315 system. The Mod 20 had paper tape and card input and printer
output. No mag files. Just an expensive Tab system.