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Parallel Sysplex brain split

PostPosted: Mon Jan 11, 2016 7:26 pm
by grachik89
Hi guys! I have a question.
How does long distance two-site sysplex solve the brain-split problem?
If only connection between sites is failed.

Re: Parallel Sysplex brain split

PostPosted: Mon Jan 11, 2016 10:38 pm
by Akatsukami
If I am not mistaken, a failure of communication between the sites is, by definition, a split-brain problem.

Re: Parallel Sysplex brain split

PostPosted: Tue Jan 12, 2016 12:18 pm
by grachik89
Ok, thank you. And how to solve this problem?
I explored SFM settings but I found nothing about it. There are CONNFAIL and WEIGHT parameters only.
What would happen if all of communication fails?
I mean coupling links, CTC connections and so on.
For example if DWDM fails.