IBM Z Hardware and Operating Systems Ideas Portal


This is the public portal for all IBM Z Hardware and Operating System related offerings. To view all of your ideas submitted to IBM, create and manage groups of Ideas, or create an idea explicitly set to be either visible by all (public) or visible only to you and IBM (private), use the IBM Unified Ideas Portal (https://ideas.ibm.com).


Shape the future of IBM!

We invite you to shape the future of IBM, including product roadmaps, by submitting ideas that matter to you the most. Here's how it works:

Search existing ideas

Start by searching and reviewing ideas and requests to enhance a product or service. Take a look at ideas others have posted, and add a comment, vote, or subscribe to updates on them if they matter to you. If you can't find what you are looking for,

Post your ideas

  1. Post an idea.

  2. Get feedback from the IBM team and other customers to refine your idea.

  3. Follow the idea through the IBM Ideas process.


Specific links you will want to bookmark for future use

Welcome to the IBM Ideas Portal (https://www.ibm.com/ideas) - Use this site to find out additional information and details about the IBM Ideas process and statuses.

IBM Unified Ideas Portal (https://ideas.ibm.com) - Use this site to view all of your ideas, create new ideas for any IBM product, or search for ideas across all of IBM.

ideasibm@us.ibm.com - Use this email to suggest enhancements to the Ideas process or request help from IBM for submitting your Ideas.

Add a new idea Subscribe
Status Functionality already exists
Workspace z/OS
Categories BCP_XCF/XES
Created by Guest
Created on Sep 29, 2025

RELATED IDEAS

Allow more than 8 coupling facilities to be defined in a CFRM policy

Currently the maximum CFs per Coupling Facility Resource Management policy is 8. As a large shop we currently have to simultaneously maintain two policies in our production environment (one for prod and one for logical corruption detection/LCD), and as we move to new data centers, we will need to maintain three policies for the various development permutations. Looking forward it's possible we're going to need even more CFRM policies to cover our production environment. Is there a reason there is a hard limit of 8, or is it possible to expand to 24 or perhaps even 99 CF definitions per policy?

I appreciate you taking the time to look this over and respond. Thank you!

Idea priority Low
  • Guest
    Sep 29, 2025
    The maximum number of policies that the XCF Administrative Data Utility (IXCMIAPU) can define for CFRM is determined by the target couple data set. The maximum number of policies a CFRM couple data set can contain is determined at creation/format time. The maximum number of policies the XCF Couple Data Set Format Utility will allow for CFRM is 32. See https://www.ibm.com/docs/zos/latest?topic=utility-cfrm-parameters-format. So, support already exists to define up to 32 policies in your CFRM couple data set. If your CFRM couple data set only supports 8, format new, larger couple data sets that support more policies and bring them into use.
    1 reply

By clicking the "Post Comment" or "Submit Idea" button, you are agreeing to the IBM Ideas Portal Terms of Use.
Do not place IBM confidential, company confidential, or personal information into any field.