On Fri, 12 Jun 2015 09:17:31 -0700, Norman.Hollander wrote: >3088 Multi-System Channel-to-Channel I/O Control Unit. >Bus and Tag, connecting 4 CPUs (IIRC).
I thought I remembered 8 channel connections. I found this in the OS/390 2.10 GRS Planning manual: Model A1 can connect two systems through up to 63 data links. Model 1 can connect up to four systems through up to 126 data links. Model 2 can connect up to eight systems through up to 252 data links. ISTR it was sometimes referred to as an "octopus". -- Tom Marchant ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
