When you resynchronize a TrueCopy for Mainframe pair in an Open/MF consistency group that consists of one pair of the primary storage system and secondary storage system by using Business Continuity Manager, all pairs in the consistency group are resynchronized. If the host is accessing the S-VOL of the TrueCopy pair, the TrueCopy pair is also resynchronized simultaneously. Resynchronize the pair after you reconfirm the status of all TrueCopy pairs and all TrueCopy for Mainframe pairs in the consistency group.
When you remove a TrueCopy for Mainframe pair in an Open/MF consistency group that consists of one pair of the primary storage system and secondary storage system by using Business Continuity Manager, only the TrueCopy for Mainframe pairs in the consistency group are removed. If you want to remove the TrueCopy pairs, you must remove the pairs by using CCI.