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IBM z/OS V2.1 DFSMS Technical Update by Norbert Schlumberger, Gert Laumann, Anthony Fletcher, Jose Dovidauskas, Mary Lovelace

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System Data Mover enhancements
This chapter introduces a change in DFSMS V2.1 addressing a performance issue in System Data Mover (SDM). SDM primary volumes are now allowed to be offline when volumes are added in an XRC session. Before this enhancement, the start of a session had to wait for all volumes to come online delaying a fast creation of an XRC session.
The following enhancements are described in this chapter:
 
9.1 XRC offline volumes
Adding volumes in an XRC session with ...

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