I have customers interested in clustering virtual Linux systems for high availability. I have VM systems in two different buildings, connected via ESCON CTCs. The idea is to set up pairs of Linux guests, one in each building, with the absolute minimum hardware in between. One approach would be to assign each pair of Linux guests its own CTC address pair, but I could quickly run out of CTC addresses. Since the two systems already have an ISFC connection, it would seem that Distributed IUCV would be an interesting option. I'm hesitant about just setting "DISTRIBUTE IUCV YES" in SYSTEM CONFIG because of concern about messing up all the traditional IUCV applications (VM:Secure, VM:Backup, etc), so "DISTRIBUTE IUCV TOLERATE" looks like a safer choice. 1) Is it safe to assume that traditional IUCV applications will not be affected if I turn on TOLERATE? 2) Does the Linux IUCV driver support Distributed IUCV connections in general? 3) Does the Linux IUCV driver support Distributed IUCV connections when running in TOLERATE mode, which I understand requires that the application specify the system that it wants to talk to? If yes, how would that be coded?
TIA! Mark Wheeler 3M Company ( celebrating our 100th anniversary today!)
