If you receive pageable-storage shortage messages, the SDM system is constrained by lack of real or virtual storage. In this case, either reduce the number of primary storage controls being managed by the SDM or increase the amount of real storage or paging space for the ANTASnnn address space. You can also reduce the maximum number of buffers the data mover can use. This is done by setting the TotalBuffers parameter to a smaller value. Each buffer requires 60K of virtual and real storage.
For additional information about address spaces, refer to Address Spaces for XRC.