Space banner


This space provides the same content as before, but the organization of the home page has changed. The content is now organized based on logical branches instead of legacy book titles. We hope that the new structure will help you quickly find the content that you need.

SMS subpools

SMS-managed storage groups are defined in ACS code and cannot be changed.

DFSMS-managed subpooling is a method of dividing these storage groups into pools to improve data set allocation and performance. This functionality is limited to denying volumes outside of an DFSMS-defined pool. Volume selection cannot be directed outside of the data set’s current storage group. If multiple pools are specified, the first pool with sufficient space for the data set is assigned. The first specified pool is the primary pool; all other pools are alternate pools.

For more information, see:

Was this page helpful? Yes No Submitting... Thank you