You can delete the SIz pairs that you no longer need. Deleting a pair unpairs the P-VOL and S-VOL but does not delete their data. You can use the volumes of deleted pairs in another pair. In addition, the following troubleshooting operation requires deleting the pair: Recovery procedure from failure if one volume capacity used in the SIz pair has been expanded. For details, see DP-VOL capacity expansion errors.
If you are sharing SIz S-VOLs with URz P-VOLs and you plan to perform a CTG pair-split, register the split time for an SIz CTG before you delete the pair. The registered split time is deleted when you delete the following pairs:
- The SIz pairs that are assigned to the SIz CTG.
- The URz pairs that are assigned to the URz R-JNL, which is the journal volume on the secondary storage system associated to the S-VOL.